Add the account area and account-synced Appearance preferences

Stage 1 PR 6 (ADR 0062). /account shows who is signed in; /account/appearance
chooses System, Light, or Dark and reduced motion (System, Reduce, Allow).

- Core: ekklesia_core_user_preference, one typed, CHECK-constrained,
  nullable column per preference (null = never chosen), migration
  0008_user_preferences (additive), @ekklesia/core/account store, and the
  authenticated-baseline permission core.account.self.manage.
- API: GET /api/v1/account (name, email, preferences) and partial
  PATCH /api/v1/account/preferences, self-only by construction: no user id
  is accepted anywhere; trusted Origin and body limit on the mutation.
- Shell: the account control shows name, email, and initials (never the
  unvetted image URL) and offers Account, Appearance, Sign out; native
  radio groups apply a choice at once through the ADR 0060 controller and
  save it; the server's answer wins and a failed save reverts.
- First paint: a classic, same-origin, render-blocking appearance.js in
  <head> applies a two-word localStorage cache before paint (no inline
  script, CSP unchanged). The account replaces the cache on every load,
  sign-out clears it, and other tabs follow via the storage event.
- Deploy smoke: real-Chromium checks for light/dark, OS emulation,
  overrides, reload persistence, pre-paint, Shadow DOM modules, reduced
  motion, the display staying light, and phone width; the browser
  container gets a 512 MiB /dev/shm so a long session no longer fails
  requests with ERR_INSUFFICIENT_RESOURCES.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

.gitattributes

@@ -6,3 +6,7 @@
 *.gif binary
 *.webp binary
 *.woff2 binary
+
+# Reviewed license supplements are named by the SHA-256 of their exact bytes (ADR 0052), so Git must
+# never rewrite their line endings.
+packages/module-pack/license-supplements/** -text

.github/workflows/ci.yml

@@ -128,6 +128,129 @@ jobs:
         if: always()
         run: bash scripts/ci-sweep.sh --job
 
+  package-release:
+    needs: verify
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    # What the gate proved, for the job that consumes its artifact to check it received exactly that.
+    outputs:
+      version: ${{ steps.release.outputs.version }}
+      revision: ${{ steps.release.outputs.revision }}
+      manifest_sha256: ${{ steps.release.outputs.manifest_sha256 }}
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          # `actions/checkout` defaults to leaving the job token in `.git/config`, where any later
+          # step — including one a pull request added to this file — could read or reuse it. Nothing
+          # in this workflow pushes, so the credential is never needed after checkout.
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version-file: .node-version
+
+      - name: Activate pinned pnpm
+        run: |
+          corepack enable
+          corepack prepare [email protected] --activate
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      # ADR 0053's package release gate: build the public package train from this commit, build it
+      # again from a second checkout and require byte-identical artifacts, then install exactly those
+      # tarballs (offline, no registry) into a module outside this repository and prove it builds,
+      # packages, and verifies. Nothing is published and no credential exists here. A future publish
+      # job must depend on this job and publish only the artifacts it proved.
+      - name: Build, reproduce, and consume the public package train
+        run: pnpm test:package-release --keep package-train
+
+      - name: Describe the proven release train
+        id: release
+        run: |
+          release="$(find package-train -mindepth 1 -maxdepth 1 -type d)"
+          manifest="$release/ekklesia-package-train.json"
+          {
+            echo "version=$(node -p 'JSON.parse(require("fs").readFileSync(process.argv[1], "utf8")).version' "$manifest")"
+            echo "revision=$(node -p 'JSON.parse(require("fs").readFileSync(process.argv[1], "utf8")).source.revision' "$manifest")"
+            echo "manifest_sha256=$(sha256sum "$manifest" | cut -d' ' -f1)"
+          } >>"$GITHUB_OUTPUT"
+          cat "$manifest"
+
+      # The exact release artifacts, for the jobs that consume them, from a directory whose name does
+      # not start with a dot: the artifact actions leave hidden files out. Version 3 of the artifact
+      # actions: version 4 refuses any server that is not github.com, which this Gitea is not, while
+      # Gitea implements the protocol version 3 uses. A consumer checks the files, not the wrapper.
+      - name: Hand the release train on
+        uses: actions/upload-artifact@c6a3b2bd78b3985e4b2f15397fec357f0fd808de # v3.2.2-node20
+        with:
+          name: package-train
+          path: package-train/
+          if-no-files-found: error
+          retention-days: 7
+
+  # The publication tool, given exactly the artifact the package-release job proved, against a
+  # disposable Gitea 1.27.2 (scripts/test-package-publication.sh). Never the real registry, and no
+  # credential: the disposable registry's accounts are created and discarded inside the job.
+  package-publication:
+    needs: package-release
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    env:
+      # Names this job's stacks, so its final step removes exactly these (scripts/lib/ci-project.sh).
+      EKKLESIA_CI_JOB_KEY: package-publication
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      # A job the runner killed (cancelled, or past the runner's own time limit) never ran its
+      # cleanup. Anything a CI job left on this shared daemon more than three hours ago goes first.
+      - name: Sweep stale CI stacks from the runner
+        run: bash scripts/ci-sweep.sh --stale
+
+      - name: Set up Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version-file: .node-version
+
+      - name: Activate pinned pnpm
+        run: |
+          corepack enable
+          corepack prepare [email protected] --activate
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Receive the release train the gate proved
+        uses: actions/download-artifact@ad191675b41f6a5b46da9a048cb6893812da158b # v3.1.0-node20
+        with:
+          name: package-train
+          path: package-train/
+
+      - name: Check it is exactly that train
+        env:
+          EXPECTED_MANIFEST_SHA256: ${{ needs.package-release.outputs.manifest_sha256 }}
+        run: |
+          release="$(find package-train -mindepth 1 -maxdepth 1 -type d)"
+          actual="$(sha256sum "$release/ekklesia-package-train.json" | cut -d' ' -f1)"
+          if [[ -z "$EXPECTED_MANIFEST_SHA256" || "$actual" != "$EXPECTED_MANIFEST_SHA256" ]]; then
+            echo "The received release manifest is not the one the package-release job proved." >&2
+            exit 1
+          fi
+          (cd "$release" && sha256sum --check --strict SHA256SUMS)
+
+      - name: Publish it to a disposable Gitea, and prove the round trip and recovery
+        run: bash scripts/test-package-publication.sh --release "$(find package-train -mindepth 1 -maxdepth 1 -type d)"
+
+      # Whatever happened above, this job's own stacks do not outlive it.
+      - name: Remove this job's CI stacks
+        if: always()
+        run: bash scripts/ci-sweep.sh --job
+
   image-build:
     needs: verify
     runs-on: ubuntu-latest

.github/workflows/publish-packages.yml

@@ -0,0 +1,133 @@
+name: Publish packages
+
+# Publishes one public @ekklesia/* package train (ADR 0053, docs/development/releases.md) to the
+# npm registry: exactly the artifacts this run's package-release gate proves, and nothing else.
+#
+# Only ever started by hand, on `main`, by someone with write access to this repository: no pull
+# request or push can start it. It needs the version-set commit of a release (`version` must equal
+# the platform version there), and the repository secret EKKLESIA_PACKAGES_PUBLISH_TOKEN, a token of
+# the dedicated publisher account with only the `write:package` scope. Packages are publicly
+# readable (ADR 0054); publishing is what this protects.
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: The package train version to publish, equal to the platform version on main.
+        required: true
+        type: string
+
+permissions:
+  contents: read
+
+# Never cancel a publication part way, and never run two at once. A rerun resumes safely.
+concurrency:
+  group: publish-packages
+  cancel-in-progress: false
+
+env:
+  # The only registry-specific setting: where the train is published.
+  EKKLESIA_PACKAGES_REGISTRY: https://git.zayin.net/api/packages/Zayin/npm/
+
+jobs:
+  package-release:
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    outputs:
+      version: ${{ steps.release.outputs.version }}
+      revision: ${{ steps.release.outputs.revision }}
+      manifest_sha256: ${{ steps.release.outputs.manifest_sha256 }}
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version-file: .node-version
+
+      - name: Activate pinned pnpm
+        run: |
+          corepack enable
+          corepack prepare [email protected] --activate
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      # The same credential-free gate as CI: build, reproduce, and consume the train.
+      - name: Build, reproduce, and consume the public package train
+        run: pnpm test:package-release --keep package-train
+
+      - name: Describe the proven release train
+        id: release
+        run: |
+          release="$(find package-train -mindepth 1 -maxdepth 1 -type d)"
+          manifest="$release/ekklesia-package-train.json"
+          {
+            echo "version=$(node -p 'JSON.parse(require("fs").readFileSync(process.argv[1], "utf8")).version' "$manifest")"
+            echo "revision=$(node -p 'JSON.parse(require("fs").readFileSync(process.argv[1], "utf8")).source.revision' "$manifest")"
+            echo "manifest_sha256=$(sha256sum "$manifest" | cut -d' ' -f1)"
+          } >>"$GITHUB_OUTPUT"
+
+      # Artifact actions version 3: version 4 refuses any server that is not github.com. The directory
+      # name must not start with a dot: the artifact actions leave hidden files out.
+      - name: Hand the release train on
+        uses: actions/upload-artifact@c6a3b2bd78b3985e4b2f15397fec357f0fd808de # v3.2.2-node20
+        with:
+          name: package-train
+          path: package-train/
+          if-no-files-found: error
+          retention-days: 90
+
+  publish:
+    needs: package-release
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      # Only for the publication tool itself: nothing is built or installed in this job.
+      - name: Check out repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version-file: .node-version
+
+      - name: Receive the release train the gate proved
+        uses: actions/download-artifact@ad191675b41f6a5b46da9a048cb6893812da158b # v3.1.0-node20
+        with:
+          name: package-train
+          path: package-train/
+
+      # The tool validates the whole train against its manifest, that manifest against the gate's,
+      # its version against the request, and its revision against this commit, before it sends
+      # anything; then publishes, verifies every package byte for byte, and moves `latest` last.
+      - name: Publish the exact release train
+        env:
+          EKKLESIA_PACKAGES_PUBLISH_TOKEN: ${{ secrets.EKKLESIA_PACKAGES_PUBLISH_TOKEN }}
+          TRAIN_VERSION: ${{ inputs.version }}
+          TRAIN_REVISION: ${{ github.sha }}
+          MANIFEST_SHA256: ${{ needs.package-release.outputs.manifest_sha256 }}
+        run: |
+          node scripts/publish-package-train.ts \
+            --release "$(find package-train -mindepth 1 -maxdepth 1 -type d)" \
+            --registry "$EKKLESIA_PACKAGES_REGISTRY" \
+            --version "$TRAIN_VERSION" \
+            --revision "$TRAIN_REVISION" \
+            --manifest-sha256 "$MANIFEST_SHA256" \
+            --record publication-record.json \
+            --require-public-read
+
+      - name: Keep the publication record
+        uses: actions/upload-artifact@c6a3b2bd78b3985e4b2f15397fec357f0fd808de # v3.2.2-node20
+        with:
+          name: package-train-publication-record
+          path: publication-record.json
+          if-no-files-found: error
+          retention-days: 90

.gitignore

@@ -1,4 +1,8 @@
 node_modules/
+# pnpm's content-addressed package store. pnpm keeps it beside node_modules on the same file system,
+# so when the checkout is its own mount (a CI runner's workspace volume, a bind-mounted container),
+# `pnpm install` creates it here, at the checkout's root. A package cache, never source.
+.pnpm-store/
 .turbo/
 coverage/
 dist/
@@ -16,3 +20,11 @@ generated/*
 
 core/.identity-schema-reference.ts
 core/.identity-schema-check-*
+
+# The packager tests copy fixture modules here (packages/module-pack/tests/support/fixture-module.ts).
+packages/module-pack/.fixtures/
+
+# `pnpm packages:release` writes package release trains here (scripts/package-release.ts).
+.package-release/
+# CI keeps the proven release here to hand it on as a workflow artifact (scripts/test-package-release.sh --keep).
+/package-train/

CLAUDE.md

@@ -6,27 +6,60 @@ contents, because restated details drift.
 
 ## What this repository is
 
-Ekklesia is a modular, self-hosted church platform built as a strictly layered pnpm/TypeScript
-monorepo:
+Ekklesia is a modular, self-hosted church platform. **This repository is the platform** — Core, the
+API, the Dashboard and display shell, and the public `@ekklesia/*` module-development packages — built
+as a strictly layered pnpm/TypeScript monorepo:
 
 - **Core** (`core/`) owns platform infrastructure: identity, database connectivity, migration
-  execution, module discovery/lifecycle, and other feature-agnostic services. Core never imports a
-  feature module, a surface, or an app.
-- **Modules** (`modules/*`, template at `templates/module`) are independently versioned product
-  packages. They own their own data and migrations, declare capabilities/permissions through
-  `@ekklesia/contracts` and `@ekklesia/module-sdk`, and must never import Core, another module, or a
-  surface directly. Per ADR 0021 a module owns its UI; manifest v7 permits independently optional
-  primary and full-viewport display artifacts, authored in React against the same role-neutral
-  `@ekklesia/module-ui-sdk` ABI. Ekklesia mounts each through a separate surface role, while
-  `pnpm boundaries` still rejects every non-React UI framework and non-`.tsx` presentation source.
+  execution, module discovery/lifecycle, devices, and other feature-agnostic services. Core never
+  imports a feature module, a surface, or an app.
+- **Modules** are independently versioned product packages. First-party modules live in **their own
+  repositories** (Signage is `Zayin/Signage`), build against the published `@ekklesia/*` packages
+  (ADR 0053), and reach an installation as a Module Package (ADR 0049) installed into module storage
+  outside the image (ADR 0048). No module source lives in this repository; `templates/module` is the
+  example, and `modules/` is only an optional, ignored local installed-modules directory. A module owns
+  its data, migrations, and **its own domain UI** (ADR 0021), declares capabilities/permissions through
+  `@ekklesia/contracts` and `@ekklesia/module-sdk`, and never imports Core, another module, or a
+  surface. Manifest v8 permits independently optional primary and full-viewport display artifacts,
+  authored in React against the role-neutral `@ekklesia/module-ui-sdk` ABI; database access is the
+  Module Database ABI v1 (ADR 0050).
 - **Surfaces** (`surfaces/*`) own the containing application shell, navigation, and every
-  presentation concern a module does not. They consume public API/client contracts only, never Core
-  or module internals directly.
+  presentation concern a module does not. The shell **hosts** module UI through the generic loader;
+  it never rebuilds a module's domain screens. Surfaces consume public API/client contracts only.
 
 These boundaries are enforced by `pnpm boundaries` (`scripts/check-boundaries.ts`), not just
 documented. Read `docs/architecture/repository-boundaries.md` and
 `docs/architecture/platform-architecture.md` before proposing any change that crosses a layer.
 
+## Product direction lives beside this repository
+
+The current roadmap and product/interface design contract are `ROADMAP.md` and `DESIGN.md` in the
+parent development directory (`../ROADMAP.md` and `../DESIGN.md` from a checkout in the standard
+`~/development/ekklesia/` layout). They are deliberately **not** committed here; do not copy them into
+this repository to make them available. They are authoritative for product direction: read the
+relevant stages and sections before designing a change. If this repository's documentation disagrees
+with them, flag the conflict, correct the repository-local documentation where appropriate, and never
+silently follow the stale text. Architectural decisions still change only through ADRs (below).
+
+Rules from those documents that every change here must respect:
+
+- **Ownership.** Modules own their domain data, behaviour, and UI. Shared resources — displays and
+  devices, accounts and identity, roles and authorization, branding, mail, push, storage providers,
+  and module installation/lifecycle — belong to the platform, and modules consume them.
+- **Branding.** Normal user-facing UI never hard-codes "Ekklesia"; product identity comes from
+  installation branding (ADR 0046). Package names, diagnostics, logs, and developer tooling may.
+  Existing hard-coded shell strings are known debt for Stage 1, not a pattern to copy.
+- **Visual direction.** Simple, minimal, and calm; responsive for phone, tablet, and desktop; light,
+  dark, and system modes. Normal UI colours come only from the shared design tokens
+  (`@ekklesia/design-tokens`, ADR 0039) — never a hard-coded colour.
+- **No browser-native dialogs.** `window.alert`, `window.confirm`, and `window.prompt` are prohibited
+  in product UI. Destructive actions use in-product confirmation proportional to their impact.
+- **Displays are transitional.** Displays are platform-owned. Today's device pairing (the Dashboard
+  sidebar's *Display devices* panel) and Signage's own display roster are a transitional
+  implementation that Stage 1 migrates to **Settings → Displays**. Fix defects in them, but do not
+  build the Stage 1 Settings, global Displays, theme editor, module installer, or responsive shell
+  redesign early, and keep existing paired displays working across any change.
+
 ## ADRs are authoritative
 
 `docs/architecture/decisions/` records durable architectural decisions. **Accepted ADRs are
@@ -43,6 +76,7 @@ At minimum, read the current versions of:
 - `docs/architecture/decisions/README.md` and every ADR relevant to your change
 - `docs/architecture/platform-architecture.md` and `docs/architecture/repository-boundaries.md`
 - `README.md` (current platform status — what is and is not implemented)
+- `../ROADMAP.md` and `../DESIGN.md` (current product direction; see above)
 - `docs/development/repository-workflow.md` and `docs/development/testing.md`
 - `CONTRIBUTING.md`
 
@@ -52,8 +86,16 @@ your own memory of a prior session** — treat stale assumptions as a bug to cat
 
 ## Working conventions
 
-- Work on a clean branch off an up-to-date `main`; never commit or push directly to `main`; never
-  change branch-protection settings.
+- The canonical repositories are on the church Gitea under the `Zayin` organization:
+  `ssh://[email protected]:2222/Zayin/Ekklesia.git` (this one), `Zayin/Signage.git`, and
+  `Zayin/Classroom_Desktop.git`. A local clone may be behind the server: `git fetch --prune --tags`
+  and branch from `origin/main`, never from whatever is checked out.
+- One branch per PR, off an up-to-date `origin/main`. Never commit or push directly to `main`, never
+  merge your own PR, and never change branch-protection settings.
+- Never create or push a release tag. Release tags belong to the human maintainer.
+- A change that needs both a platform contract change and a module change is two PRs: Core first, on
+  its own branch, with the compatibility boundary stated explicitly; then the module. Do not copy
+  platform logic into a module to avoid making the correct Core change.
 - Keep PRs focused on one bounded slice. Record major architectural changes in an ADR rather than
   burying them in an implementation.
 - Add or update tests when you change a contract or architectural rule. New behavior needs new
@@ -66,6 +108,13 @@ your own memory of a prior session** — treat stale assumptions as a bug to cat
 - Never run a database migration automatically (on import, on startup, in a test that isn't
   explicitly a migration test, or as a side effect of an unrelated command). Migrations are always
   an explicit, operator-invoked action.
+- Report what you find. A defect, flaky test, documentation/ADR conflict, or CI problem outside the
+  task at hand gets an issue in the repository it belongs to, as soon as you find it. Search for an
+  existing issue first; something fixed in the same PR goes in that PR's description instead. Be
+  descriptive: what you saw, the evidence (run and job links, commit, file and line), how to
+  reproduce it, the impact, and options, and never a secret. Label it `found-by-claude` (an agent
+  that cannot apply labels ends the body with a line saying so), leave it unassigned, and list what
+  you filed when you report back.
 
 ## Canonical verification commands
 
@@ -78,6 +127,13 @@ ever disagree:
 - `pnpm test:migrations:integration` — live, disposable-PostgreSQL evidence: migration discovery,
   planning, and execution, plus the `apps/api` HTTP transport (signup, sign-in, principal
   resolution, sign-out). Requires Docker. Run this for any change touching either area.
+- `pnpm test:package-release` — builds the public `@ekklesia/*` package train, proves it
+  reproducible, and proves a standalone module consumes exactly those tarballs. Publishes nothing.
+  Run it for any change to the public packages or their release tooling.
+- `pnpm test:package-publication` — publishes a release train to a disposable Gitea (Docker) and
+  proves the publication tool. Never the real registry. The real publication is the manual
+  `Publish packages` workflow only; never run `scripts/publish-package-train.ts` against the real
+  registry without the user's explicit intent.
 - `pnpm doctor` — read-only local readiness report. Never treat it as a substitute for `pnpm
   verify` or the integration suite.
 - `pnpm migrations:plan` / `pnpm migrations:apply` — read-only planning vs. mutating execution

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
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+same work.
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+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
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+  No covered work shall be deemed part of an effective technological
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+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
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+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
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+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
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+  4. Conveying Verbatim Copies.
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+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
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+keep intact all notices of the absence of any warranty; and give all
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+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
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+used to limit the access or legal rights of the compilation's users
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+  You may convey a covered work in object code form under the terms
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+  A "User Product" is either (1) a "consumer product", which means any
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+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
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+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
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+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
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+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
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+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
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+  All other non-permissive additional terms are considered "further
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+received it, or any part of it, contains a notice stating that it is
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+a further restriction but permits relicensing or conveying under this
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+  Additional terms, permissive or non-permissive, may be stated in the
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+
+  You may not propagate or modify a covered work except as expressly
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+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
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+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
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+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
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+
+  An "entity transaction" is a transaction transferring control of an
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+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
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+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
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+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
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+receiving the covered work authorizing them to use, propagate, modify
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+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
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+conveyed by you (or copies made from those copies), or (b) primarily
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+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
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+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -44,8 +44,38 @@ selected by `EKKLESIA_MODULES_DIR` (`/var/lib/ekklesia/modules` in the image, th
 self-contained directory carrying its own production dependencies. Installing, updating, or removing
 a module needs only a controlled restart and, when it has migrations, an explicit plan and apply.
 Nothing is hot loaded. Removing a module's code keeps its data and its stored state; its applied
-migration history is retained and reported, and blocks no other migration. Purge, a package format,
-signing, and any installer or marketplace do not exist yet.
+migration history is retained and reported, and blocks no other migration. A module is distributed
+as one **Ekklesia Module Package v1**
+([ADR 0049](docs/architecture/decisions/0049-module-package-v1.md)): a deterministic `.tar.gz` and
+its SHA-256, produced by the canonical packager (`@ekklesia/module-pack`) with the module's backend
+bundled, and checked by Core's verifier before it is installed. Two targets exist:
+- the portable `any` target, for pure-JavaScript modules;
+- `linux-x64-glibc`, for modules with a native dependency such as `sharp`. Its native runtime
+  packages are carried as real files under the package's `node_modules`, and the verifier checks the
+  host before anything is loaded.
+
+Every package records the module's validated SPDX expression and carries its explicitly
+supplied `LICENSE` bytes; dependency material remains separate in `THIRD_PARTY_NOTICES`. ABI-v1
+packages may bundle a module-owned Drizzle version without coupling it to Core;
+legacy-v8 packages retain their transitional exact-version check. Where a redistributed dependency
+omits licence material, the packager may add reviewed licence supplements
+([ADR 0052](docs/architecture/decisions/0052-reviewed-license-supplements.md)). A native package that
+redistributes LGPL or MPL code is distributed publicly only with its corresponding-source artifact,
+which `ekklesia-corresponding-source` builds and gates
+([ADR 0055](docs/architecture/decisions/0055-corresponding-source-artifacts.md)). Purge, other
+operating-system or CPU targets, signing, and any installer or marketplace do not exist yet.
+
+A module can be built in its own repository from Ekklesia's public module-development packages
+([ADR 0053](docs/architecture/decisions/0053-standalone-module-development-packages.md)):
+a curated `@ekklesia/module-sdk`, `@ekklesia/module-database`, the UI packages, and the build and
+packaging tools. They are released as one coordinated train of tarballs with a release manifest,
+and CI proves on every run that two builds of a commit are byte-identical and that a module outside
+the repository installs, builds, packages, and verifies from those artifacts alone. A manual
+workflow, the only way to publish, publishes exactly those artifacts to the npm registry and
+verifies every package byte for byte. Anyone may read and install the packages before launch
+([ADR 0054](docs/architecture/decisions/0054-public-package-reads-before-launch.md)). The first train
+published will be the next platform release
+([Releases and the public package train](docs/development/releases.md)).
 
 Phase 4A added Core-owned identity foundations: a Core-owned Better Auth database schema
 (`ekklesia_core_user`, `ekklesia_core_session`, `ekklesia_core_account`,
@@ -502,8 +532,8 @@ reported `blocked · configuration_missing · bucket` — never imported, never
 from inside its own `start` hook — and its required dependents block behind it through ADR 0028's
 existing mechanism. Doctor and `pnpm modules:validate` report the same thing while still importing no
 module code. That change introduced `manifestVersion: 5` as a hard cutover; the current strict
-manifest is version 7 after ADR 0033 added the optional display declaration and ADR 0041 added
-browser contributions.
+manifest is version 8 after ADR 0050 added the optional database ABI declaration. Version 8 is a
+hard cutover; a version 7 source module or package must be updated and rebuilt.
 
 **Ekklesia does not store secrets, and does not pretend to.** There is no encryption at rest here and
 no key management, so a `secret` key's value is supplied by the deployment
@@ -792,7 +822,8 @@ hosting are deployment work, not guarantees added by this pass. Display device i
 public Website remain separate future designs.
 
 **Still not the finished Dashboard.** There is no navigation editor or drag and drop, no nested
-folders, no icons or colors, no Dashboard Home or widgets, no design system, no client-side routing,
+folders, no icons or colors, no Dashboard Home or widgets, no design system, no client-side routing
+(since added; see the Stage 1 paragraph below),
 and no module-management, settings, or storage UI — module enablement and configuration are an API and
 a CLI, not a screen, and object storage is deployment configuration. A production CSP and
 deployment for the built shells, general sidecar asset publication, React runtime sharing, the
@@ -837,7 +868,7 @@ is versioned with no dual acceptance; migrating is one `pnpm build`.
 
 Phase 8 pass 3 lets one module contribute a browser renderer to a capability another module provides
 ([ADR 0041](docs/architecture/decisions/0041-module-browser-contributions.md)) — the browser half of
-the capability system Core has had since Phase 1. `manifestVersion: 7` declares a namespaced id, its
+the capability system Core has had since Phase 1. `manifestVersion: 8` declares a namespaced id, its
 own version, a target capability, a compatible range, and one artifact, and nothing else: there is no
 payload schema, slot, ordering, or rendering hint anywhere, so Core cannot learn what any of it
 means. Publication requires that another eligible module provides the capability inside the declared
@@ -875,6 +906,59 @@ the module's responsibility and do not exist yet.**
 Ekklesia Lite, a theme editor, a module store or installer, a standalone host, and every feature
 module — Signage included — still do not exist, and nothing in Phase 8 claims otherwise.
 
+Stage 1 begins with **real Dashboard URLs**
+([ADR 0057](docs/architecture/decisions/0057-dashboard-urls-are-host-owned-routes.md)). The
+Dashboard opens on an **Overview** at `/`, and each module is a top-level destination with its own
+address, `/<module-id>` (`/signage`), beside `/settings` and `/account`, so a refresh, a bookmark,
+and a shared link land on the page that was open and Back and Forward walk the Dashboard's own pages.
+The API serves the same Dashboard page at `/`, throughout `/settings` and `/account`, and throughout
+each installed module's `/<module-id>`; any other top-level path is its sanitized `404`. Core reserves
+the platform's own top-level names (`account`, `api`, `assets`, `display`, `settings`), and
+discovery refuses a module that uses one. An installed module that is disabled shows a host-owned
+*This page isn't available* rather than loading anything. A module's own
+sub-pages, Settings and Account pages, and returning to the workflow a Settings link came from are
+later Stage 1 work.
+
+The Dashboard's **shell** follows DESIGN.md §4
+([ADR 0058](docs/architecture/decisions/0058-dashboard-shell-navigation-and-lucide-icons.md)): a
+collapsible left sidebar — icons and labels expanded, icons with accessible tooltips collapsed, the
+choice remembered in this browser — with the Overview first, the server's groups and modules below it,
+and an account menu anchored at the bottom (Sign out, for now). There is no top bar. On a phone the
+same navigation opens in a modal drawer with focus trapped inside it, Escape and the backdrop closing
+it, and focus returned to the menu button. Lucide is Ekklesia's icon vocabulary; until modules can
+declare their own icon (manifest v9), every module shows one generic icon. Church branding in the
+sidebar's identity slot is still to come.
+
+`@ekklesia/ui` now carries the interactions every later screen shares
+([ADR 0059](docs/architecture/decisions/0059-shared-interaction-primitives.md)): a product-owned
+`ConfirmationDialog` (simple, destructive, or typed-phrase, chosen by the caller), a per-tree
+top-center toast system, `ErrorState` with collapsed technical detail and remedies, skeleton loading,
+and `PageHeader` with a Back action that returns only to a validated Dashboard page. Every dialog
+traps and restores focus, and `pnpm lint` refuses `window.alert`, `confirm`, and `prompt`
+repository-wide.
+
+The Dashboard follows the operating system's **Light or Dark** appearance and **reduced-motion**
+setting, live and without a reload, and so does every module's UI, through the same design tokens
+([ADR 0060](docs/architecture/decisions/0060-light-dark-system-theme-and-motion.md)). The dark theme is
+designed rather than inverted, every text and focus pairing is contrast-tested to WCAG AA in both
+schemes, and corners scale from one `radius.scale` token. Displays stay light.
+
+**Settings** has its own place in the sidebar
+([ADR 0061](docs/architecture/decisions/0061-settings-hierarchy-and-module-settings-routes.md)): a
+landing page at `/settings`; the platform's General, Branding, Displays, Discover, and System; and each
+module's settings at `/settings/<module-id>`. Discover is where modules are found, installed, managed,
+and updated (`/settings/discover/browse`, `/installed`, `/updates`); configuring a module is its own
+Settings page. A person sees only what the server says they may administer, and no Settings link at all
+when that is nothing. The pages are placeholders until each section is built.
+
+**Your account** is at the bottom of the sidebar, showing your name, email, and initials
+([ADR 0062](docs/architecture/decisions/0062-account-area-and-synced-appearance-preferences.md)).
+`/account` shows who you are signed in as. On `/account/appearance` you choose **System, Light, or
+Dark** and **reduced motion** (System, Reduce, or Allow). A choice takes effect at once, is saved to
+your account so it follows you to every device, and is applied before the first paint on your next
+visit. Managing your own appearance needs no administrative permission. Profile editing and an
+avatar image are not part of this.
+
 ## Quick start
 
 Prerequisites: Node.js 24 LTS, pnpm 11.12, and Docker with Compose.
@@ -930,7 +1014,7 @@ Modules
   ✓ Dependency graph valid
     Dependency order is empty.
   ✓ Permission registry composed
-    6 permissions registered
+    7 permissions registered
   ○ Module lifecycle skipped
     DATABASE_URL is not configured.
   ○ Module configuration skipped
@@ -940,7 +1024,7 @@ Data definitions
   ✓ Schemas validated
     0 modules · 0 tables
   ✓ Migrations validated
-    7 migrations · checksums valid
+    9 migrations · checksums valid
     core:0000_identity_core_tables · f8f2086ef06f
     core:0001_authorization_core_tables · 830e1fbc26d0
     core:0002_authorization_integrity · 634294731180
@@ -948,6 +1032,8 @@ Data definitions
     core:0004_module_lifecycle_state · c8b5d8b3d48b
     core:0005_module_configuration · c8d57f24f84b
     core:0006_device_identity · 1db97b7e3ac5
+    core:0007_verified_bootstrap_owners · 49013062f3e0
+    core:0008_user_preferences · fa9d4b0bb9d3
 
 PostgreSQL
   ✓ Database TLS verified
@@ -1068,5 +1154,27 @@ environment.
 - [Module development](docs/module-development/README.md)
 - [Architecture decisions](docs/architecture/decisions/README.md)
 
-No open-source license has been selected yet. A license should be added only after the project
-owner makes that decision.
+## License
+
+Ekklesia is licensed under the **GNU Affero General Public License, version 3 or any later version**
+(SPDX `AGPL-3.0-or-later`). The full text of version 3 is in [LICENSE](LICENSE). Its source is
+available to you under the terms of that license.
+
+> Ekklesia is free software: you can redistribute it and/or modify it under the terms of the GNU
+> Affero General Public License as published by the Free Software Foundation, either version 3 of
+> the License, or (at your option) any later version.
+>
+> Ekklesia is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
+> the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero
+> General Public License for more details.
+>
+> You should have received a copy of the GNU Affero General Public License along with Ekklesia. If
+> not, see <https://www.gnu.org/licenses/>.
+
+Section 13 of the license adds an obligation for network use: if you modify Ekklesia and run your
+modified version for users who interact with it remotely over a network, your version must offer
+those users the opportunity to receive its Corresponding Source.
+
+Official Ekklesia modules, published by the Ekklesia project, are licensed under `AGPL-3.0-or-later`
+as well. Each module's own repository declares its license. The module template declares it in its
+`package.json`, so a module started from the template begins with the same license.

apps/api/package.json

@@ -1,6 +1,7 @@
 {
   "name": "@ekklesia/api",
-  "version": "0.1.2",
+  "version": "0.2.5",
+  "license": "AGPL-3.0-or-later",
   "private": true,
   "type": "module",
   "files": [
@@ -27,6 +28,7 @@
   },
   "devDependencies": {
     "@biomejs/biome": "2.5.3",
+    "@ekklesia/design-tokens": "workspace:*",
     "@ekklesia/module-ui-host": "workspace:*",
     "@ekklesia/module-ui-sdk": "workspace:*",
     "@ekklesia/typescript-config": "workspace:*",

apps/api/src/account-routes.ts

@@ -0,0 +1,157 @@
+import { isAuthenticatedPrincipal } from "@ekklesia/contracts";
+import {
+  type AccountPreferences,
+  type AccountStore,
+  AccountStoreError,
+  parseAccountPreferencesUpdate,
+} from "@ekklesia/core/account";
+import { CORE_ACCOUNT_SELF_MANAGE } from "@ekklesia/core/authorization";
+import { type Context, Hono } from "hono";
+import {
+  type AuthorizationMiddlewareOptions,
+  getAuthorizedPrincipal,
+  requirePermission,
+  requireTrustedOrigin,
+} from "./authorization-middleware.js";
+import { CORE_MUTATION_MAX_BODY_BYTES, platformBodyLimit } from "./body-limits.js";
+
+export const ACCOUNT_PATH = "/api/v1/account";
+export const ACCOUNT_PREFERENCES_PATH = `${ACCOUNT_PATH}/preferences`;
+
+/** `GET /api/v1/account`: the signed-in person's own account, as the account area shows it. */
+export interface AccountResponse {
+  readonly name: string;
+  readonly email: string;
+  readonly preferences: AccountPreferences;
+}
+
+export interface CreateAccountRoutesOptions extends AuthorizationMiddlewareOptions {
+  readonly store: AccountStore;
+  readonly trustedOrigins: ReadonlySet<string>;
+}
+
+function sanitizedFailure(c: Context, status: 400 | 403 | 404 | 503, code: string): Response {
+  c.header("Cache-Control", "no-store");
+  return c.json({ code }, status);
+}
+
+/** Maps the store's own sanitized codes onto HTTP without inventing a second vocabulary. */
+function storeFailure(
+  c: Context,
+  error: unknown,
+  fallback: "ACCOUNT_READ_FAILED" | "ACCOUNT_WRITE_FAILED",
+): Response {
+  if (error instanceof AccountStoreError) {
+    if (error.code === "ACCOUNT_NOT_FOUND") {
+      return sanitizedFailure(c, 404, error.code);
+    }
+    if (error.code === "ACCOUNT_PREFERENCES_INVALID") {
+      return sanitizedFailure(c, 400, "INVALID_REQUEST");
+    }
+    return sanitizedFailure(c, 503, error.code);
+  }
+  return sanitizedFailure(c, 503, fallback);
+}
+
+async function readJsonBody(c: Context): Promise<unknown> {
+  try {
+    return (await c.req.json()) as unknown;
+  } catch {
+    return undefined;
+  }
+}
+
+/**
+ * A signed-in person's own account (ADR 0062): who they are signed in as, and their own
+ * preferences.
+ *
+ * ## Self-only by construction
+ *
+ * Neither route accepts a user id — not in the path, not in the query, not in the body. The account
+ * is always the one the **session** names, so there is no request that could read or change anyone
+ * else's, whatever permission the caller holds. A body that names any key besides a known
+ * preference is refused whole.
+ *
+ * ## Authorization
+ *
+ * Both routes require `core.account.self.manage`, whose baseline is `authenticated`: every
+ * signed-in person may manage their own account, and needs no church-management permission to do
+ * so. An anonymous caller and a paired device are refused (`403`). Changing a preference is a
+ * mutation like any other Core mutation: an exact trusted `Origin` and a bounded body are checked
+ * before authorization work begins.
+ *
+ * ## What the browser learns
+ *
+ * Name, email, and preferences — exactly what the account area shows, and nothing else. Not the
+ * account's image URL, verification state, timestamps, or any credential. Responses are per-person
+ * and never cached.
+ */
+export function createAccountRoutes(options: CreateAccountRoutesOptions): Hono {
+  const routes = new Hono();
+  const requireSelf = requirePermission(options, CORE_ACCOUNT_SELF_MANAGE);
+  const requireOrigin = requireTrustedOrigin(options.trustedOrigins);
+  const mutationBodyLimit = platformBodyLimit(CORE_MUTATION_MAX_BODY_BYTES);
+
+  routes.get(ACCOUNT_PATH, requireSelf, async (c) => {
+    c.header("Cache-Control", "no-store");
+    c.header("Vary", "Origin, Cookie");
+    const principal = getAuthorizedPrincipal(c);
+    // Unreachable through the `authenticated` baseline, which only a person satisfies; checked
+    // again so the account read can never be keyed by anything but a person's own session.
+    if (!isAuthenticatedPrincipal(principal)) {
+      return sanitizedFailure(c, 403, "AUTHORIZATION_DENIED");
+    }
+    try {
+      const account = await options.store.readAccount(principal.userId);
+      if (!account) {
+        return sanitizedFailure(c, 404, "ACCOUNT_NOT_FOUND");
+      }
+      return c.json(
+        {
+          email: account.email,
+          name: account.name,
+          preferences: {
+            appearance: account.preferences.appearance,
+            motion: account.preferences.motion,
+          },
+        } satisfies AccountResponse,
+        200,
+      );
+    } catch (error) {
+      return storeFailure(c, error, "ACCOUNT_READ_FAILED");
+    }
+  });
+
+  routes.patch(
+    ACCOUNT_PREFERENCES_PATH,
+    requireOrigin,
+    mutationBodyLimit,
+    requireSelf,
+    async (c) => {
+      c.header("Cache-Control", "no-store");
+      c.header("Vary", "Origin, Cookie");
+      const principal = getAuthorizedPrincipal(c);
+      if (!isAuthenticatedPrincipal(principal)) {
+        return sanitizedFailure(c, 403, "AUTHORIZATION_DENIED");
+      }
+      const update = parseAccountPreferencesUpdate(await readJsonBody(c));
+      if (!update) {
+        return sanitizedFailure(c, 400, "INVALID_REQUEST");
+      }
+      try {
+        const preferences = await options.store.updatePreferences(principal.userId, update);
+        return c.json(
+          {
+            appearance: preferences.appearance,
+            motion: preferences.motion,
+          } satisfies AccountPreferences,
+          200,
+        );
+      } catch (error) {
+        return storeFailure(c, error, "ACCOUNT_WRITE_FAILED");
+      }
+    },
+  );
+
+  return routes;
+}

apps/api/src/app.ts

@@ -1,6 +1,5 @@
 import {
   isAuthenticatedPrincipal,
-  type ModuleRuntimeServices,
   type ModuleSecretSource,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
@@ -9,10 +8,12 @@ import type {
   AuthorizationStore,
   PermissionRegistry,
 } from "@ekklesia/core/authorization";
+import type { AccountStore } from "@ekklesia/core/account";
 import type { DashboardStore } from "@ekklesia/core/dashboard";
 import type { DeviceStore } from "@ekklesia/core/devices";
 import { type EkklesiaIdentityRuntime, IdentityRuntimeError } from "@ekklesia/core/identity";
 import type {
+  AnyModuleRuntimeServices,
   DiscoveredModule,
   ModuleConfigurationLookup,
   ModuleConfigurationSettings,
@@ -20,6 +21,7 @@ import type {
   ModuleLifecycleSnapshot,
   ModuleLifecycleStore,
   ModuleRealtimeRegistry,
+  ModuleRuntimeServicesLookup,
   ModuleStorageLookup,
   ModuleUiPublicationRegistry,
 } from "@ekklesia/core/modules";
@@ -27,10 +29,12 @@ import type { Context, MiddlewareHandler } from "hono";
 import { Hono } from "hono";
 import { cors } from "hono/cors";
 import { AUTH_REQUEST_MAX_BODY_BYTES, platformBodyLimit } from "./body-limits.js";
+import { createAccountRoutes } from "./account-routes.js";
 import type { DashboardHostAssets } from "./dashboard-host-assets.js";
 import { createDashboardHostRoutes } from "./dashboard-host-routes.js";
 import { createDashboardRoutes } from "./dashboard-routes.js";
-import { createDeviceRoutes } from "./device-routes.js";
+import { createDashboardSettingsRoutes } from "./dashboard-settings-routes.js";
+import { createDeviceRoutes, renewDeviceSessionCookie } from "./device-routes.js";
 import type { DisplayHostAssets } from "./display-host-assets.js";
 import { createGrantsRoutes } from "./grants-routes.js";
 import { type ApiHealthOptions, createHealthRoutes } from "./health-routes.js";
@@ -62,11 +66,10 @@ export interface CreateApiAppOptions {
   /** The started runtime's immutable module-owned realtime registry. Required explicitly even when
    * empty, for the same reason as module routes: application composition never guesses what ran. */
   readonly moduleRealtime: ModuleRealtimeRegistry;
-  /** The same frozen services object the caller's started module runtime already passed to every
-   * module's `start`/`stop` hooks (`apps/api/src/server.ts`) — reference-identical, never a fresh
-   * object built here, so a module's HTTP handlers and lifecycle hooks share exactly one
-   * `ModuleDatabase` for the lifetime of this API runtime. */
-  readonly moduleServices: ModuleRuntimeServices;
+  /** The same per-module service lookup the caller's started module runtime used for every
+   * module's `start`/`stop` hooks (`apps/api/src/server.ts`) — each handler receives its module's
+   * reference-identical service object, never a fresh facade or executor built per request. */
+  readonly moduleServices: ModuleRuntimeServicesLookup | AnyModuleRuntimeServices;
   /** The platform's module UI publication policy — always the one Core builds from the exact
    * discovered inventory this runtime started (`createModuleUiPublicationRegistry`,
    * `apps/api/src/server.ts`). Required rather than defaulted, for the same reason `moduleRoutes`
@@ -140,6 +143,10 @@ export interface CreateApiAppOptions {
    * presentation only — nothing reachable through this store influences discovery, dependency
    * ordering, module startup, or any authorization decision. */
   readonly dashboard: DashboardStore;
+  /** Core's persistence for a signed-in person's own account summary and preferences (ADR 0062).
+   * Required like `dashboard`: every installation has accounts. Reachable only through routes that
+   * take the account from the session, never from the request. */
+  readonly account: AccountStore;
   /**
    * The built Dashboard's two files, read once by production startup (ADR 0044). Required rather
    * than optional, unlike `displayHostAssets`: every installation has a Dashboard, and a missing
@@ -363,10 +370,18 @@ export function createApiApp(options: CreateApiAppOptions): Hono {
   // own entirely. See `./health-routes.js`.
   app.route("/", createHealthRoutes(options.health));
 
-  // The Dashboard page and its one script, at exact literal paths outside `/api/` (ADR 0044). They
-  // grant no authority and resolve no principal; the page asks `/api/v1/principal` itself. See
-  // `./dashboard-host-routes.js`.
-  app.route("/", createDashboardHostRoutes(options.dashboardHostAssets));
+  // The Dashboard page and its one script, at fixed paths outside `/api/` (ADR 0044, ADR 0057): the
+  // page at `/`, the Dashboard's platform pages, and every discovered module with a Dashboard UI at
+  // `/<module-id>`. They grant no authority and resolve no principal; the page asks
+  // `/api/v1/principal` itself. See `./dashboard-host-routes.js`.
+  app.route(
+    "/",
+    createDashboardHostRoutes(options.dashboardHostAssets, {
+      modulePages: options.moduleLifecycle.snapshot.discoveredModules
+        .filter((module) => module.entrypoints.ui !== undefined)
+        .map((module) => module.manifest.id),
+    }),
+  );
 
   app.route(
     "/",
@@ -407,6 +422,12 @@ export function createApiApp(options: CreateApiAppOptions): Hono {
     registry: options.authorization.registry,
     runtime,
     ...(options.displayHostAssets ? { assets: options.displayHostAssets } : {}),
+    ...(options.devices
+      ? {
+          renewDeviceCredential: (c: Context) =>
+            renewDeviceSessionCookie(c, options.devices?.secureCookies ?? true),
+        }
+      : {}),
   });
 
   if (options.devices) {
@@ -441,6 +462,33 @@ export function createApiApp(options: CreateApiAppOptions): Hono {
     }),
   );
 
+  // Which Settings destinations the viewer may see (ADR 0061): server-evaluated presentation hints
+  // beside the navigation, never authority. See `./dashboard-settings-routes.js`.
+  app.route(
+    "/",
+    createDashboardSettingsRoutes({
+      evaluator: options.authorization.evaluator,
+      platformOwners: options.authorization.store,
+      registry: options.authorization.registry,
+      runtime,
+      snapshot: options.moduleLifecycle.snapshot,
+    }),
+  );
+
+  // The signed-in person's own account and preferences (ADR 0062). Self-only by construction: the
+  // account is always the session's, and no request value can name another. See
+  // `./account-routes.js`.
+  app.route(
+    "/",
+    createAccountRoutes({
+      evaluator: options.authorization.evaluator,
+      registry: options.authorization.registry,
+      runtime,
+      store: options.account,
+      trustedOrigins: allowedOrigins,
+    }),
+  );
+
   // Mounted before module routes and, critically, under its own sibling prefix: `/api/v1/modules/`
   // belongs entirely to installed modules, so the platform's own lifecycle resource lives beside it
   // rather than inside it. See `./module-lifecycle-routes.js`.

apps/api/src/dashboard-host-assets.ts

@@ -3,7 +3,9 @@ import { readFile } from "node:fs/promises";
 import { dashboardHostAssetUrls } from "@ekklesia/shell/dashboard-assets";
 
 /**
- * The two immutable, platform-owned files that make up the built Ekklesia Dashboard (ADR 0044).
+ * The three immutable, platform-owned files that make up the built Ekklesia Dashboard (ADR 0044):
+ * the page, its application script, and the small pre-paint appearance script the page loads in
+ * `<head>` (ADR 0062).
  *
  * Exactly the model `./display-host-assets.js` uses: read once, before the HTTP listener is bound,
  * from the exact URLs the surface package exports. Request input is never involved in this read, the
@@ -16,6 +18,8 @@ export interface DashboardHostAssets {
   readonly htmlEtag: string;
   readonly script: string;
   readonly scriptEtag: string;
+  readonly appearanceScript: string;
+  readonly appearanceScriptEtag: string;
 }
 
 /** A startup failure with a fixed, non-secret shape. The originating filesystem exception, package
@@ -42,11 +46,21 @@ function strongEtag(text: string): string {
  * can never be paired with an ETag from another. Empty output is a failed shell build rather than a
  * valid page that can never render anything.
  */
-export function createDashboardHostAssets(html: string, script: string): DashboardHostAssets {
-  if (html.trim().length === 0 || script.trim().length === 0) {
+export function createDashboardHostAssets(
+  html: string,
+  script: string,
+  appearanceScript: string,
+): DashboardHostAssets {
+  if (
+    html.trim().length === 0 ||
+    script.trim().length === 0 ||
+    appearanceScript.trim().length === 0
+  ) {
     throw new DashboardHostAssetError();
   }
   return Object.freeze({
+    appearanceScript,
+    appearanceScriptEtag: strongEtag(appearanceScript),
     html,
     htmlEtag: strongEtag(html),
     script,
@@ -92,7 +106,7 @@ export function renderDashboardPage(html: string, apiOrigin: string): string {
   return parts.join(`<meta content="${escaped}" name="ekklesia-api-origin" />`);
 }
 
-/** Loads only the two surface-declared files, and renders the API origin into the page. A missing,
+/** Loads only the three surface-declared files, and renders the API origin into the page. A missing,
  * unreadable, or incompatible build fails startup rather than leaving an API whose own origin answers
  * `/` with a 404 or a page that cannot find its API. */
 export async function loadDashboardHostAssets(apiOrigin: string): Promise<DashboardHostAssets> {
@@ -101,7 +115,12 @@ export async function loadDashboardHostAssets(apiOrigin: string): Promise<Dashbo
     // rejected sibling read is left running after this function has already failed.
     const html = await readFile(new URL(dashboardHostAssetUrls.html), "utf8");
     const script = await readFile(new URL(dashboardHostAssetUrls.script), "utf8");
-    return createDashboardHostAssets(renderDashboardPage(html, apiOrigin), script);
+    const appearanceScript = await readFile(new URL(dashboardHostAssetUrls.appearance), "utf8");
+    return createDashboardHostAssets(
+      renderDashboardPage(html, apiOrigin),
+      script,
+      appearanceScript,
+    );
   } catch {
     throw new DashboardHostAssetError();
   }

apps/api/src/dashboard-host-routes.ts

@@ -1,16 +1,24 @@
+import { moduleIdSchema } from "@ekklesia/contracts";
+import { isReservedModuleId } from "@ekklesia/core/modules";
+import { DASHBOARD_PLATFORM_PAGES } from "@ekklesia/shell/dashboard-routes";
 import { Hono } from "hono";
 import { etagMatches } from "./conditional-request.js";
 import { createDashboardHostAssets, type DashboardHostAssets } from "./dashboard-host-assets.js";
 
 /**
- * The Dashboard's two host-owned routes (ADR 0044). Neither can collide with anything else the API
- * serves: `/` is the only page the Dashboard has — it has no client router, and every emailed
- * verification or reset link lands on `/` with a query (ADR 0038) — and the script lives beside, never
- * inside, the display host's `/assets/ekklesia-display/` namespace. Module routes all live under
- * `/api/v1/modules/<module-id>`.
+ * The Dashboard's host-owned routes (ADR 0044, ADR 0057). None can collide with anything else the API
+ * serves: the page answers at `/`, at the Dashboard's own platform pages (which the shell exports, so
+ * this server and the shell's router read one list), and at each installed module's `/<module-id>`.
+ * Every one of those first segments is either a reserved platform name or a module id Core accepted,
+ * and Core refuses a module id that is a reserved name, so no module page can shadow `/api`,
+ * `/assets`, `/display`, or a platform page. The script lives beside, never inside, the display
+ * host's `/assets/ekklesia-display/` namespace, and every emailed verification or reset link still
+ * lands on `/` with a query (ADR 0038).
  */
 export const DASHBOARD_HOST_PAGE_PATH = "/";
 export const DASHBOARD_HOST_SCRIPT_PATH = "/assets/ekklesia-dashboard/app.js";
+/** The pre-paint appearance script (ADR 0062), beside the application script. */
+export const DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH = "/assets/ekklesia-dashboard/appearance.js";
 
 /**
  * Revalidate-always with a strong `ETag`, exactly the module UI and display-host script policy. The
@@ -50,8 +58,12 @@ export class DashboardHostConfigurationError extends Error {
  * a composition can never pair bytes with a validator computed from different bytes. */
 function snapshotAssets(input: DashboardHostAssets): DashboardHostAssets {
   try {
-    const snapshot = createDashboardHostAssets(input.html, input.script);
-    if (snapshot.htmlEtag !== input.htmlEtag || snapshot.scriptEtag !== input.scriptEtag) {
+    const snapshot = createDashboardHostAssets(input.html, input.script, input.appearanceScript);
+    if (
+      snapshot.htmlEtag !== input.htmlEtag ||
+      snapshot.scriptEtag !== input.scriptEtag ||
+      snapshot.appearanceScriptEtag !== input.appearanceScriptEtag
+    ) {
       throw new DashboardHostConfigurationError();
     }
     return snapshot;
@@ -85,29 +97,73 @@ function fixedAsset(
   });
 }
 
+export interface DashboardHostRouteOptions {
+  /**
+   * The id of every module this process discovered that declares a Dashboard UI — enabled or not,
+   * since a disabled module's bookmark should open the Dashboard and say the module is unavailable
+   * rather than fail as an unknown address. Fixed at startup, like the rest of the module set.
+   */
+  readonly modulePages: readonly string[];
+}
+
+/** Each module page must be a real module id that names no platform namespace, exactly once.
+ * Discovery already guarantees this; the routes refuse to compose rather than trust it. */
+function validatedModulePages(modulePages: readonly string[]): readonly string[] {
+  const seen = new Set<string>();
+  for (const moduleId of modulePages) {
+    if (
+      !moduleIdSchema.safeParse(moduleId).success ||
+      isReservedModuleId(moduleId) ||
+      DASHBOARD_PLATFORM_PAGES.some((page) => page === moduleId) ||
+      seen.has(moduleId)
+    ) {
+      throw new DashboardHostConfigurationError();
+    }
+    seen.add(moduleId);
+  }
+  return [...seen];
+}
+
 /**
  * Serves the built Dashboard from the same origin as `/api`, so the identity system keeps its
  * default same-origin shape.
  *
- * Two exact literal routes over one frozen snapshot: never a static directory, never a path or file
- * name taken from the request, and never the source map. Any other path — `/index.html`, `/app.js`,
- * the `.map`, a traversal spelling — has no route and falls through to the application's ordinary
- * sanitized `404`. Like the display host's code, these bytes grant no authority: the page renders
- * the sign-in form until `/api/v1/principal` says otherwise.
+ * Fixed routes over one frozen snapshot: never a static directory, never a path or file name taken
+ * from the request, and never the source map. The page answers at `/`, anywhere inside a Dashboard
+ * platform page (`/settings/displays/add` as much as `/settings`), and anywhere inside an installed
+ * module's page (`/signage/timelines` as much as `/signage`, so the module's own sub-pages need no
+ * server change later) — always with the **same** bytes and the same validator, because the path
+ * selects a page inside the shell rather than a file here; that is what lets a refreshed or
+ * bookmarked deep link stay where it was.
+ *
+ * A top-level name that is neither — `/definitely-not-a-real-module`, a module that is not
+ * installed or has no Dashboard UI, a look-alike such as `/settings-old` — has no route, nor does
+ * `/index.html`, `/app.js`, the `.map`, or a traversal spelling: all fall through to the
+ * application's ordinary sanitized `404`. Like the display host's code, these bytes grant no
+ * authority: the page renders the sign-in form until `/api/v1/principal` says otherwise.
  */
-export function createDashboardHostRoutes(assets: DashboardHostAssets): Hono {
+export function createDashboardHostRoutes(
+  assets: DashboardHostAssets,
+  options: DashboardHostRouteOptions,
+): Hono {
   const snapshot = snapshotAssets(assets);
+  const modulePages = validatedModulePages(options.modulePages);
   const routes = new Hono();
 
-  routes.get(DASHBOARD_HOST_PAGE_PATH, (c) =>
+  const page = (ifNoneMatch: string | undefined): Response =>
     fixedAsset(
-      c.req.header("if-none-match"),
+      ifNoneMatch,
       snapshot.html,
       snapshot.htmlEtag,
       "text/html; charset=utf-8",
       DASHBOARD_PAGE_SECURITY_HEADERS,
-    ),
-  );
+    );
+
+  routes.get(DASHBOARD_HOST_PAGE_PATH, (c) => page(c.req.header("if-none-match")));
+  for (const name of [...DASHBOARD_PLATFORM_PAGES, ...modulePages]) {
+    routes.get(`/${name}`, (c) => page(c.req.header("if-none-match")));
+    routes.get(`/${name}/*`, (c) => page(c.req.header("if-none-match")));
+  }
 
   routes.get(DASHBOARD_HOST_SCRIPT_PATH, (c) =>
     fixedAsset(
@@ -119,5 +175,17 @@ export function createDashboardHostRoutes(assets: DashboardHostAssets): Hono {
     ),
   );
 
+  // Same-origin, revalidated like the application script, and carrying nothing but code: the
+  // person's cached choice lives in their browser and is read by this script, never served by it.
+  routes.get(DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH, (c) =>
+    fixedAsset(
+      c.req.header("if-none-match"),
+      snapshot.appearanceScript,
+      snapshot.appearanceScriptEtag,
+      "text/javascript; charset=utf-8",
+      {},
+    ),
+  );
+
   return routes;
 }

apps/api/src/dashboard-settings-routes.ts

@@ -0,0 +1,133 @@
+import type { EkklesiaPrincipal, PermissionId } from "@ekklesia/contracts";
+import {
+  type AuthorizationPlatformOwnerPort,
+  CORE_DEVICES_MANAGE,
+  CORE_MODULES_CONFIGURATION_MANAGE,
+  CORE_MODULES_LIFECYCLE_MANAGE,
+  CORE_MODULES_UI_READ,
+} from "@ekklesia/core/authorization";
+import type { ModuleLifecycleSnapshot } from "@ekklesia/core/modules";
+import { SETTINGS_SECTIONS, type SettingsSection } from "@ekklesia/shell/dashboard-routes";
+import { Hono } from "hono";
+import {
+  type AuthorizationMiddlewareOptions,
+  getAuthorizedPrincipal,
+  requirePermission,
+} from "./authorization-middleware.js";
+
+export const DASHBOARD_SETTINGS_PATH = "/api/v1/dashboard/settings";
+
+/** One module's settings destination: its id (the `/settings/<module-id>` segment), its display
+ * name, and whether it is running. A disabled or blocked module is listed so its address can say it
+ * is unavailable, and flagged so the Dashboard never offers it in navigation. */
+export interface DashboardSettingsModuleView {
+  readonly id: string;
+  readonly name: string;
+  readonly available: boolean;
+}
+
+export interface DashboardSettingsResponse {
+  /** The platform sections this viewer may see, in navigation order. */
+  readonly sections: readonly SettingsSection[];
+  /** Modules whose settings this viewer may see, by name. */
+  readonly modules: readonly DashboardSettingsModuleView[];
+}
+
+/**
+ * Who may see each platform section (ADR 0061).
+ *
+ * A section whose administration already has a Core permission uses it, so it is delegable today.
+ * General, Branding, and System have no permission yet — nothing in them exists to authorize — so
+ * they are shown only to the **platform owner**, the one principal who already holds every
+ * permission; each gains its own delegable permission in the work that builds it.
+ */
+const SECTION_ACCESS: Readonly<Record<SettingsSection, PermissionId | "platform-owner">> =
+  Object.freeze({
+    branding: "platform-owner",
+    // Finding, installing, turning on and off, and updating modules: deciding which modules run.
+    discover: CORE_MODULES_LIFECYCLE_MANAGE,
+    displays: CORE_DEVICES_MANAGE,
+    general: "platform-owner",
+    system: "platform-owner",
+  });
+
+export interface CreateDashboardSettingsRoutesOptions extends AuthorizationMiddlewareOptions {
+  /** The boot snapshot: every module this process discovered, and which it started. A module's
+   * settings exist when its manifest declares configuration (ADR 0029). */
+  readonly snapshot: ModuleLifecycleSnapshot;
+  readonly platformOwners: AuthorizationPlatformOwnerPort;
+}
+
+function compareText(left: string, right: string): number {
+  return left < right ? -1 : left > right ? 1 : 0;
+}
+
+/**
+ * The Dashboard's Settings navigation, evaluated for the viewer.
+ *
+ * Like the module permission hints in the navigation (ADR 0026), these are **presentation hints,
+ * not authority**: they decide which Settings destinations the Dashboard offers, so nobody is shown
+ * administration they cannot carry out (DESIGN.md §9.2). Every route behind a section keeps its own
+ * enforcement, unchanged. Each answer goes through Core's one evaluator — baselines, grants, expiry,
+ * and the owner bypass behave exactly as on a real request — and an evaluation failure is a `503`,
+ * never an empty answer that would look like a permissions problem.
+ *
+ * Reading requires `core.modules.ui.read`, the same permission the navigation it sits beside
+ * requires: any signed-in person may ask, and most will be told there is nothing for them.
+ */
+export function createDashboardSettingsRoutes(options: CreateDashboardSettingsRoutesOptions): Hono {
+  const routes = new Hono();
+  const requireRead = requirePermission(options, CORE_MODULES_UI_READ);
+  const started = new Set(options.snapshot.startedModuleIds);
+  const modulesWithSettings = options.snapshot.discoveredModules
+    .filter((module) => module.manifest.configuration.length > 0)
+    .map((module) => ({ id: module.manifest.id, name: module.manifest.name }))
+    .sort((left, right) => compareText(left.name, right.name) || compareText(left.id, right.id));
+
+  const holds = async (
+    principal: EkklesiaPrincipal,
+    permission: PermissionId,
+  ): Promise<boolean> => {
+    const declaration = options.registry.get(permission);
+    if (!declaration) {
+      return false;
+    }
+    return (
+      await options.evaluator.authorize({
+        baseline: declaration.baseline,
+        permission,
+        principal,
+      })
+    ).allowed;
+  };
+
+  routes.get(DASHBOARD_SETTINGS_PATH, requireRead, async (c) => {
+    c.header("Cache-Control", "no-store");
+    c.header("Vary", "Origin, Cookie");
+    const principal = getAuthorizedPrincipal(c);
+    try {
+      let owner: boolean | undefined;
+      const isOwner = async (): Promise<boolean> => {
+        owner ??=
+          principal.kind === "authenticated" &&
+          (await options.platformOwners.isPlatformOwner(principal.userId));
+        return owner;
+      };
+      const sections: SettingsSection[] = [];
+      for (const section of SETTINGS_SECTIONS) {
+        const access = SECTION_ACCESS[section];
+        if (access === "platform-owner" ? await isOwner() : await holds(principal, access)) {
+          sections.push(section);
+        }
+      }
+      const modules = (await holds(principal, CORE_MODULES_CONFIGURATION_MANAGE))
+        ? modulesWithSettings.map((module) => ({ ...module, available: started.has(module.id) }))
+        : [];
+      return c.json({ modules, sections } satisfies DashboardSettingsResponse, 200);
+    } catch {
+      return c.json({ code: "AUTHORIZATION_EVALUATION_FAILED" }, 503);
+    }
+  });
+
+  return routes;
+}

apps/api/src/database.ts

@@ -1,4 +1,5 @@
-import type { ModuleDatabase } from "@ekklesia/contracts";
+import type { ModuleDatabaseExecutor, ModuleId } from "@ekklesia/contracts";
+import { type AccountDrizzleDatabase, createAccountDrizzleView } from "@ekklesia/core/account";
 import {
   type AuthorizationDrizzleDatabase,
   createAuthorizationDrizzleView,
@@ -12,18 +13,23 @@ import { createDeviceDrizzleView, type DeviceDrizzleDatabase } from "@ekklesia/c
 import { createIdentityDrizzleView, type IdentityDrizzleDatabase } from "@ekklesia/core/identity";
 import {
   createModuleConfigurationView,
+  createModuleDatabaseExecutor,
   createModuleDatabaseView,
   createModuleLifecycleView,
   type ModuleConfigurationDrizzleDatabase,
+  type ModuleDatabase,
   type ModuleLifecycleDrizzleDatabase,
 } from "@ekklesia/core/modules";
 
 export interface ApiDatabaseHandle {
+  readonly account: AccountDrizzleDatabase;
   readonly authorization: AuthorizationDrizzleDatabase;
   readonly devices: DeviceDrizzleDatabase;
   readonly dashboard: DashboardDrizzleDatabase;
   readonly identity: IdentityDrizzleDatabase;
   readonly module: ModuleDatabase;
+  /** Builds one ABI-v1 executor attributed to exactly one module, over this handle's shared pool. */
+  readonly moduleExecutor: (moduleId: ModuleId) => ModuleDatabaseExecutor;
   readonly moduleConfiguration: ModuleConfigurationDrizzleDatabase;
   readonly moduleLifecycle: ModuleLifecycleDrizzleDatabase;
   /**
@@ -70,12 +76,14 @@ export function createApiDatabase(
   const { close, pool } = createValidatedPostgresPool(databaseUrl, options);
 
   return Object.freeze({
+    account: createAccountDrizzleView(pool),
     authorization: createAuthorizationDrizzleView(pool),
     close,
     devices: createDeviceDrizzleView(pool),
     dashboard: createDashboardDrizzleView(pool),
     identity: createIdentityDrizzleView(pool),
     module: createModuleDatabaseView(pool),
+    moduleExecutor: (moduleId: ModuleId) => createModuleDatabaseExecutor(pool, { moduleId }),
     moduleConfiguration: createModuleConfigurationView(pool),
     moduleLifecycle: createModuleLifecycleView(pool),
     ping: async (statementTimeoutMs: number) => {

apps/api/src/device-routes.ts

@@ -92,7 +92,7 @@ function readString(body: Record<string, unknown>, key: string, max: number): st
  */
 function writeDeviceCookie(
   c: Context,
-  options: DeviceRoutesOptions,
+  options: Pick<DeviceRoutesOptions, "secureCookies">,
   name: string,
   value: string,
   maxAgeSeconds: number,
@@ -106,6 +106,27 @@ function writeDeviceCookie(
   });
 }
 
+/**
+ * Re-issues the device cookie a request just authenticated with, with a fresh lifetime (ADR 0056).
+ *
+ * The value is unchanged — no rotation — so a renewal lost in transit costs nothing: the screen still
+ * holds a working credential. Only the browser's own expiry is pushed forward, matching the
+ * server's sliding window. Called only after the request resolved to a live, unrevoked device.
+ */
+export function renewDeviceSessionCookie(c: Context, secureCookies: boolean): void {
+  const credential = getCookie(c, DEVICE_SESSION_COOKIE);
+  if (credential === undefined || credential.length === 0) {
+    return;
+  }
+  writeDeviceCookie(
+    c,
+    { secureCookies },
+    DEVICE_SESSION_COOKIE,
+    credential,
+    Math.floor(DEVICE_CREDENTIAL_TTL_MS / 1000),
+  );
+}
+
 export function createDeviceRoutes(options: DeviceRoutesOptions): Hono {
   const routes = new HonoApp();
   const now = options.now ?? ((): Date => new Date());

apps/api/src/module-display-routes.ts

@@ -83,6 +83,9 @@ export interface ModuleDisplayRoutesOptions extends AuthorizationMiddlewareOptio
   /** Omitted only when the registry contains no display entrypoints. Production reads the exact
    * surface-owned files before binding and supplies their frozen contents here. */
   readonly assets?: DisplayHostAssets;
+  /** Re-issues a paired device's cookie with a fresh lifetime (ADR 0056). Composed only when the
+   * deployment has device support; called only for a request that resolved to a device. */
+  readonly renewDeviceCredential?: (c: Context) => void;
 }
 
 /** A composition error, detected before any display route is registered. Carries no module id,
@@ -199,6 +202,11 @@ function mountDisplay(
       if (!viewer) {
         return displayFailure(c);
       }
+      // Every screen asks for this on start, on reconnect, and periodically while running, so it
+      // is where an in-use credential's browser expiry is pushed forward.
+      if (principal.kind === "device") {
+        options.renewDeviceCredential?.(c);
+      }
       return c.json(await describeDisplay(options, principal, display, viewer), 200);
     } catch {
       return displayFailure(c);

apps/api/src/module-http-routes.ts

@@ -1,14 +1,17 @@
 import {
   EMPTY_MODULE_CONFIGURATION,
   EMPTY_MODULE_STORAGE,
+  type ModuleDatabaseExecutor,
   type ModuleId,
   type ModuleRouteHandlerContext,
-  type ModuleRuntimeServices,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
 import type {
+  AnyModuleRuntimeServices,
   ModuleConfigurationLookup,
+  ModuleDatabase,
   ModuleRealtimeRegistry,
+  ModuleRuntimeServicesLookup,
   ModuleStorageLookup,
 } from "@ekklesia/core/modules";
 import type { Context, Hono } from "hono";
@@ -37,14 +40,14 @@ export interface ModuleHttpRoutesOptions extends AuthorizationMiddlewareOptions
    * received for this API runtime — never a fresh one built per request, and never touched for a
    * denied, trusted-origin-rejected, or `OPTIONS` request, since a handler is only ever invoked
    * after authorization succeeds. */
-  readonly services: ModuleRuntimeServices;
+  readonly services: ModuleRuntimeServicesLookup | AnyModuleRuntimeServices;
   /**
    * Per-module frozen configuration snapshots — the exact map the module runtime started from
    * (ADR 0029), so a handler and that module's `start`/`stop` hooks receive the identical object
    * rather than two independently resolved values. A module with no entry receives
    * `EMPTY_MODULE_CONFIGURATION`, so `context.config` is always present.
    *
-   * Unlike `services`, which is one shared object, this is keyed by module id: a handler can only
+   * Like `services`, this is keyed by module id: a handler can only
    * ever reach its own module's configuration, because that is the only entry looked up for it.
    */
   readonly configurations: ModuleConfigurationLookup;
@@ -232,6 +235,11 @@ export function mountModuleHttpRoutes(
     if (!options.registry.has(route.permission)) {
       throw new ModuleRouteConfigurationError();
     }
+    const services =
+      "get" in options.services ? options.services.get(route.moduleId) : options.services;
+    if (!services) {
+      throw new ModuleRouteConfigurationError();
+    }
 
     const requireRoutePermission = requirePermission(middlewareOptions, route.permission);
     // The route's own conscious body contract (`route.maxBodyBytes` — 0 means no body accepted at
@@ -243,19 +251,24 @@ export function mountModuleHttpRoutes(
     const routeBodyLimit = platformBodyLimit(route.maxBodyBytes, route.bodyMode);
     const path = moduleRoutePath(route.moduleId, route.path);
     const finalHandler = async (c: Context): Promise<Response> => {
-      const context: ModuleRouteHandlerContext = Object.freeze({
+      const context = Object.freeze({
         config: options.configurations.get(route.moduleId) ?? EMPTY_MODULE_CONFIGURATION,
         moduleId: route.moduleId,
         storage: options.storages.get(route.moduleId) ?? EMPTY_MODULE_STORAGE,
         params: Object.freeze({ ...c.req.param() }),
         principal: getAuthorizedPrincipal(c),
         realtime: options.realtime.publisherFor(route.moduleId),
-        services: options.services,
-      });
+        services,
+      }) as ModuleRouteHandlerContext<ModuleDatabase | ModuleDatabaseExecutor>;
 
       let response: Response;
       try {
-        response = await route.handler(c.req.raw, context);
+        response = await (
+          route.handler as (
+            request: Request,
+            context: ModuleRouteHandlerContext<ModuleDatabase | ModuleDatabaseExecutor>,
+          ) => PromiseLike<Response> | Response
+        )(c.req.raw, context);
       } catch {
         return sanitizedModuleHandlerFailure(c);
       }

apps/api/src/server.ts

@@ -1,15 +1,12 @@
 import type { Socket } from "node:net";
 import path from "node:path";
 import { pathToFileURL } from "node:url";
-import {
-  EMPTY_MODULE_SECRET_SOURCE,
-  type ModuleRuntimeServices,
-  type ModuleSecretSource,
-} from "@ekklesia/contracts";
+import { EMPTY_MODULE_SECRET_SOURCE, type ModuleSecretSource } from "@ekklesia/contracts";
 import {
   createAuthorizationEvaluator,
   createAuthorizationStore,
 } from "@ekklesia/core/authorization";
+import { createAccountStore } from "@ekklesia/core/account";
 import { createDashboardStore } from "@ekklesia/core/dashboard";
 import { createDeviceStore } from "@ekklesia/core/devices";
 import { type HostEnvironment, loadHostConfiguration } from "@ekklesia/core/host";
@@ -21,12 +18,14 @@ import {
 } from "@ekklesia/core/identity";
 import { createSmtpMailProvider, type MailProvider } from "@ekklesia/core/mail";
 import {
+  type AnyModuleRuntimeServices,
   createModuleConfigurationStore,
   createModuleLifecycleStore,
   createModuleUiPublicationRegistry,
   type DiscoveredModule,
   type ModuleConfigurationSettings,
   type ModuleEligibilityResolution,
+  type ModuleRuntimeServicesLookup,
   resolveModuleEligibility,
   type StartedModuleRuntime,
   startDiscoveredModuleRuntime,
@@ -393,16 +392,13 @@ function bindServer(
  *    (`prepareStartupModuleInventory`, `./platform-permissions.js`).
  * 2. Construct the one shared PostgreSQL pool (identity, authorization, and the module database
  *    facade each get a typed Drizzle view over it — see `./database.js`).
- * 3. Construct the frozen `ModuleRuntimeServices` (currently just `database`) from that same pool,
- *    then the Core identity runtime, authorization store, and evaluator.
+ * 3. Construct the Core identity runtime, authorization store, and evaluator from that pool.
  * 4. Read the stored module enablement configuration and resolve, from that exact same discovered
  *    inventory, which modules are eligible to run (`resolveModuleEligibility`).
  * 5. Start the module runtime from the eligible subset (`startDiscoveredModuleRuntime`) — never
- *    rediscovering modules a second time — passing it the same services object every module's
- *    `start`/`stop` hook receives.
+ *    rediscovering modules a second time — passing the manifest-selected service map.
  * 6. Create the Hono application, mounting the started module runtime's published routes, publishing
- *    UI for that same eligible set, and passing the exact same services object to every module HTTP
- *    handler.
+ *    UI for that same eligible set, and passing the same per-module service map to HTTP handlers.
  * 7. Bind the Node HTTP server.
  *
  * Discovery and permission composition happen before any pool, Better Auth instance, module
@@ -459,12 +455,10 @@ export async function startApi(
   const storageProvider = config.storage ? createS3StorageProvider(config.storage) : undefined;
   const mailProvider = config.mail ? createSmtpMailProvider(config.mail) : undefined;
 
-  let services: ModuleRuntimeServices;
   let runtime: ReturnType<typeof createIdentityRuntime>;
   let authorizationStore: ReturnType<typeof createAuthorizationStore>;
   let deviceStore: ReturnType<typeof createDeviceStore>;
   try {
-    services = Object.freeze({ database: databaseHandle.module });
     runtime = createIdentityRuntime({
       config: config.identity,
       db: databaseHandle.identity,
@@ -532,6 +526,15 @@ export async function startApi(
     throw error;
   }
 
+  const services: ModuleRuntimeServicesLookup = new Map<string, AnyModuleRuntimeServices>(
+    eligibility.eligibleModules.map((module) => [
+      module.manifest.id,
+      module.manifest.database?.abi === 1
+        ? Object.freeze({ database: databaseHandle.moduleExecutor(module.manifest.id) })
+        : Object.freeze({ database: databaseHandle.module }),
+    ]),
+  );
+
   // One scoped facade per eligible module, over the exact buckets that module's own manifest
   // declares. Built from the eligible set so a blocked module never receives storage at all.
   const moduleStorages = createModuleStorageLookup(
@@ -637,6 +640,8 @@ export async function startApi(
       },
       // A typed view over the same single pool as identity, authorization, and the module facade.
       dashboard: createDashboardStore(databaseHandle.dashboard),
+      // The same pool again: a person's own account summary and preferences (ADR 0062).
+      account: createAccountStore(databaseHandle.account),
       dashboardHostAssets,
       // The app is only composed after `startDiscoveredModuleRuntime` resolved, so module startup
       // has completed whenever it can answer; it stops counting as complete once shutdown begins.

apps/api/tests/account-routes.test.ts

@@ -0,0 +1,340 @@
+import {
+  ANONYMOUS_PRINCIPAL,
+  createAuthenticatedPrincipal,
+  createDevicePrincipal,
+  type EkklesiaPrincipal,
+  parseEkklesiaUserId,
+} from "@ekklesia/contracts";
+import { ACCOUNT_APPEARANCES, ACCOUNT_MOTION_PREFERENCES } from "@ekklesia/core/account";
+import {
+  type AuthorizationStore,
+  CORE_ACCOUNT_SELF_MANAGE,
+  CORE_PERMISSION_REGISTRY,
+  createAuthorizationEvaluator,
+} from "@ekklesia/core/authorization";
+import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
+import {
+  composePlatformPermissionRegistry,
+  createModuleUiPublicationRegistry,
+  EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
+} from "@ekklesia/core/modules";
+import { EKKLESIA_APPEARANCES, EKKLESIA_MOTION_PREFERENCES } from "@ekklesia/design-tokens";
+import { describe, expect, it, vi } from "vitest";
+import { ACCOUNT_PATH, ACCOUNT_PREFERENCES_PATH } from "../src/account-routes.js";
+import { createApiApp } from "../src/app.js";
+import {
+  createInMemoryAccountStore,
+  type InMemoryAccountPerson,
+} from "./support/in-memory-account-store.js";
+import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
+import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
+import { emptyModuleConfiguration } from "./support/in-memory-module-configuration.js";
+import {
+  createInMemoryModuleLifecycleStore,
+  moduleLifecycleSnapshotFor,
+} from "./support/in-memory-module-lifecycle.js";
+import { emptyModuleStorage } from "./support/in-memory-module-storage.js";
+import { readyHealth } from "./support/ready-health.js";
+
+/**
+ * `GET /api/v1/account` and `PATCH /api/v1/account/preferences` (ADR 0062): a signed-in person's
+ * own account and preferences, self-only by construction.
+ */
+
+const trustedOrigin = "https://dashboard.example.test";
+const adaId = parseEkklesiaUserId("11111111-1111-4111-8111-111111111111");
+const graceId = parseEkklesiaUserId("22222222-2222-4222-8222-222222222222");
+const ada = createAuthenticatedPrincipal(adaId);
+
+const people: readonly InMemoryAccountPerson[] = [
+  { email: "[email protected]", name: "Ada Lovelace", userId: adaId },
+  {
+    email: "[email protected]",
+    name: "Grace Hopper",
+    preferences: { appearance: "light", motion: "reduce" },
+    userId: graceId,
+  },
+];
+
+interface Options {
+  readonly principal?: EkklesiaPrincipal;
+  readonly evaluationFails?: boolean;
+}
+
+function build(options: Options = {}) {
+  const evaluator = createAuthorizationEvaluator({
+    grants: { hasActiveGrant: async () => false },
+    platformOwners: {
+      isPlatformOwner: async () => {
+        if (options.evaluationFails) {
+          throw new Error("database down");
+        }
+        return false;
+      },
+    },
+  });
+  const runtime: EkklesiaIdentityRuntime = {
+    handleAuthRequest: vi.fn(),
+    resolvePrincipal: vi.fn().mockResolvedValue(options.principal ?? ada),
+  };
+  const account = createInMemoryAccountStore(people);
+  const app = createApiApp({
+    account,
+    authorization: {
+      evaluator,
+      registry: composePlatformPermissionRegistry([]),
+      store: {} as unknown as AuthorizationStore,
+    },
+    dashboard: createInMemoryDashboardStore(),
+    dashboardHostAssets: testDashboardHostAssets(),
+    health: readyHealth(),
+    moduleConfiguration: emptyModuleConfiguration(),
+    moduleLifecycle: {
+      snapshot: moduleLifecycleSnapshotFor([], { modules: [] }),
+      store: createInMemoryModuleLifecycleStore(),
+    },
+    moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
+    moduleRoutes: Object.freeze([]),
+    moduleServices: Object.freeze({
+      database: Object.freeze({}) as unknown as ModuleDatabase,
+    }) as LegacyModuleRuntimeServices,
+    moduleStorage: emptyModuleStorage(),
+    moduleUi: createModuleUiPublicationRegistry([]),
+    runtime,
+    trustedOrigins: [trustedOrigin],
+  });
+  return { account, app };
+}
+
+function patch(body: unknown, init: { origin?: string | null; raw?: string } = {}): RequestInit {
+  const headers: Record<string, string> = { "Content-Type": "application/json" };
+  if (init.origin !== null) {
+    headers.Origin = init.origin ?? trustedOrigin;
+  }
+  return { body: init.raw ?? JSON.stringify(body), headers, method: "PATCH" };
+}
+
+describe("core.account.self.manage", () => {
+  it("is an authenticated-baseline Core permission, so managing your own account needs no grant", () => {
+    expect(CORE_PERMISSION_REGISTRY.get(CORE_ACCOUNT_SELF_MANAGE)?.baseline).toBe("authenticated");
+  });
+
+  it("holds Core's preference values equal to the design tokens' own", () => {
+    expect([...ACCOUNT_APPEARANCES]).toEqual([...EKKLESIA_APPEARANCES]);
+    expect([...ACCOUNT_MOTION_PREFERENCES]).toEqual([...EKKLESIA_MOTION_PREFERENCES]);
+  });
+});
+
+describe("GET /api/v1/account", () => {
+  it("returns the signed-in person's own name, email, and default preferences", async () => {
+    const { app } = build();
+    const response = await app.request(ACCOUNT_PATH);
+
+    expect(response.status).toBe(200);
+    expect(response.headers.get("cache-control")).toBe("no-store");
+    expect(response.headers.get("vary")).toContain("Cookie");
+    expect(await response.json()).toEqual({
+      email: "[email protected]",
+      name: "Ada Lovelace",
+      preferences: { appearance: "system", motion: "system" },
+    });
+  });
+
+  it("returns exactly name, email, and preferences — nothing else about the account", async () => {
+    const { app } = build();
+    const body = (await (await app.request(ACCOUNT_PATH)).json()) as Record<string, unknown>;
+    expect(Object.keys(body).sort()).toEqual(["email", "name", "preferences"]);
+    expect(Object.keys(body.preferences as object).sort()).toEqual(["appearance", "motion"]);
+  });
+
+  it("refuses an anonymous caller", async () => {
+    const { account, app } = build({ principal: ANONYMOUS_PRINCIPAL });
+    const response = await app.request(ACCOUNT_PATH);
+
+    expect(response.status).toBe(403);
+    expect(await response.json()).toEqual({ code: "AUTHORIZATION_DENIED" });
+    expect(account.requestedUserIds).toEqual([]);
+  });
+
+  it("refuses a paired display device, which has no account", async () => {
+    const { account, app } = build({
+      principal: createDevicePrincipal("33333333-3333-4333-8333-333333333333"),
+    });
+    const response = await app.request(ACCOUNT_PATH);
+
+    expect(response.status).toBe(403);
+    expect(account.requestedUserIds).toEqual([]);
+  });
+
+  it("reads only the session's account, whatever the request names", async () => {
+    const { account, app } = build();
+    const response = await app.request(`${ACCOUNT_PATH}?userId=${graceId}&id=${graceId}`, {
+      headers: { "X-User-Id": graceId },
+    });
+
+    expect(((await response.json()) as { name: string }).name).toBe("Ada Lovelace");
+    expect(account.requestedUserIds).toEqual([adaId]);
+  });
+
+  it("has no route that addresses another person's account", async () => {
+    const { account, app } = build();
+    for (const path of [`${ACCOUNT_PATH}/${graceId}`, `${ACCOUNT_PREFERENCES_PATH}/${graceId}`]) {
+      expect((await app.request(path)).status).toBe(404);
+      expect((await app.request(path, patch({ appearance: "dark" }))).status).toBe(404);
+    }
+    expect(account.requestedUserIds).toEqual([]);
+  });
+
+  it("is not found when the session's person no longer exists", async () => {
+    const { app } = build({
+      principal: createAuthenticatedPrincipal("99999999-9999-4999-8999-999999999999"),
+    });
+    const response = await app.request(ACCOUNT_PATH);
+
+    expect(response.status).toBe(404);
+    expect(await response.json()).toEqual({ code: "ACCOUNT_NOT_FOUND" });
+  });
+
+  it("reports a storage failure as a sanitized 503", async () => {
+    const { account, app } = build();
+    account.failWith("ACCOUNT_READ_FAILED");
+    const response = await app.request(ACCOUNT_PATH);
+
+    expect(response.status).toBe(503);
+    expect(await response.json()).toEqual({ code: "ACCOUNT_READ_FAILED" });
+  });
+
+  it("reports an authorization outage as a 503, never as a denial", async () => {
+    // The authenticated baseline needs no owner lookup, so an owner-lookup outage cannot deny it.
+    const { app } = build({ evaluationFails: true });
+    expect((await app.request(ACCOUNT_PATH)).status).toBe(200);
+  });
+});
+
+describe("PATCH /api/v1/account/preferences", () => {
+  it.each([
+    ["appearance", "light"],
+    ["appearance", "dark"],
+    ["appearance", "system"],
+    ["motion", "reduce"],
+    ["motion", "allow"],
+    ["motion", "system"],
+  ] as const)("saves %s %s and returns everything in effect", async (name, value) => {
+    const { app } = build();
+    const response = await app.request(ACCOUNT_PREFERENCES_PATH, patch({ [name]: value }));
+
+    expect(response.status).toBe(200);
+    expect(response.headers.get("cache-control")).toBe("no-store");
+    const body = (await response.json()) as Record<string, string>;
+    expect(body[name]).toBe(value);
+    expect(Object.keys(body).sort()).toEqual(["appearance", "motion"]);
+
+    const read = (await (await app.request(ACCOUNT_PATH)).json()) as {
+      preferences: Record<string, string>;
+    };
+    expect(read.preferences[name]).toBe(value);
+  });
+
+  it("changes only the preference named", async () => {
+    const { app } = build();
+    await app.request(ACCOUNT_PREFERENCES_PATH, patch({ appearance: "dark" }));
+    const response = await app.request(ACCOUNT_PREFERENCES_PATH, patch({ motion: "reduce" }));
+
+    expect(await response.json()).toEqual({ appearance: "dark", motion: "reduce" });
+  });
+
+  it.each([
+    ["an empty object", {}],
+    ["an unknown appearance", { appearance: "sepia" }],
+    ["an unknown motion", { motion: "none" }],
+    ["an unknown key", { appearance: "dark", radius: "large" }],
+    ["another person's id", { appearance: "dark", userId: "22222222-2222-4222-8222-222222222222" }],
+    ["an array", ["dark"]],
+    ["null", null],
+  ])("refuses %s with nothing changed", async (_label, body) => {
+    const { account, app } = build();
+    const response = await app.request(ACCOUNT_PREFERENCES_PATH, patch(body));
+
+    expect(response.status).toBe(400);
+    expect(await response.json()).toEqual({ code: "INVALID_REQUEST" });
+    expect(account.requestedUserIds).toEqual([]);
+  });
+
+  it("refuses a body that is not JSON", async () => {
+    const { app } = build();
+    const response = await app.request(ACCOUNT_PREFERENCES_PATH, patch(undefined, { raw: "{" }));
+    expect(response.status).toBe(400);
+  });
+
+  it("refuses an untrusted or missing Origin before anything else", async () => {
+    const { account, app } = build();
+    for (const origin of ["https://elsewhere.example.test", null] as const) {
+      const response = await app.request(
+        ACCOUNT_PREFERENCES_PATH,
+        patch({ appearance: "dark" }, { origin }),
+      );
+      expect(response.status).toBe(403);
+      expect(await response.json()).toEqual({ code: "UNTRUSTED_ORIGIN" });
+    }
+    expect(account.requestedUserIds).toEqual([]);
+  });
+
+  it("refuses an oversized body", async () => {
+    const { app } = build();
+    const response = await app.request(
+      ACCOUNT_PREFERENCES_PATH,
+      patch(undefined, { raw: JSON.stringify({ appearance: "dark", pad: "x".repeat(20_000) }) }),
+    );
+    expect(response.status).toBe(413);
+  });
+
+  it("refuses an anonymous caller and a device", async () => {
+    for (const principal of [
+      ANONYMOUS_PRINCIPAL,
+      createDevicePrincipal("33333333-3333-4333-8333-333333333333"),
+    ]) {
+      const { account, app } = build({ principal });
+      const response = await app.request(ACCOUNT_PREFERENCES_PATH, patch({ appearance: "dark" }));
+      expect(response.status).toBe(403);
+      expect(account.requestedUserIds).toEqual([]);
+    }
+  });
+
+  it("changes only the session's own preferences, never another person's", async () => {
+    const { account, app } = build();
+    await app.request(
+      `${ACCOUNT_PREFERENCES_PATH}?userId=${graceId}`,
+      patch({ appearance: "dark", motion: "allow" }),
+    );
+
+    expect(account.requestedUserIds).toEqual([adaId]);
+    expect((await account.readAccount(graceId))?.preferences).toEqual({
+      appearance: "light",
+      motion: "reduce",
+    });
+  });
+
+  it("reports a storage failure as a sanitized 503", async () => {
+    const { account, app } = build();
+    account.failWith("ACCOUNT_WRITE_FAILED");
+    const response = await app.request(ACCOUNT_PREFERENCES_PATH, patch({ appearance: "dark" }));
+
+    expect(response.status).toBe(503);
+    expect(await response.json()).toEqual({ code: "ACCOUNT_WRITE_FAILED" });
+  });
+
+  it("answers a preflight from the Dashboard origin with PATCH allowed", async () => {
+    const { app } = build();
+    const response = await app.request(ACCOUNT_PREFERENCES_PATH, {
+      headers: {
+        "Access-Control-Request-Method": "PATCH",
+        Origin: trustedOrigin,
+      },
+      method: "OPTIONS",
+    });
+    expect(response.headers.get("access-control-allow-origin")).toBe(trustedOrigin);
+    expect(response.headers.get("access-control-allow-methods")).toContain("PATCH");
+  });
+});

apps/api/tests/api-http.integration.ts

@@ -208,6 +208,29 @@ async function activeConnectionCount(databaseName: string): Promise<number> {
   }
 }
 
+/** How long a shutdown's closed connections may take to leave `pg_stat_activity`. Far below pg's
+ * 10 s idle timeout, so a connection that is genuinely still open is still caught. */
+const SHUTDOWN_SETTLE_MS = 3_000;
+
+/**
+ * The connections left on `databaseName` once a shutdown has had a moment to land.
+ *
+ * PostgreSQL ends a backend asynchronously: `pool.end()` resolves once the client side has closed,
+ * and the server can still list that backend for a moment afterwards. On a loaded CI runner that
+ * moment was long enough for an immediate count to see one. So this waits, briefly, for the count to
+ * reach zero; a leaked pooled client would stay idle and listed far past the deadline.
+ */
+async function connectionsLeftAfterShutdown(databaseName: string): Promise<number> {
+  const deadline = Date.now() + SHUTDOWN_SETTLE_MS;
+  for (;;) {
+    const count = await activeConnectionCount(databaseName);
+    if (count === 0 || Date.now() >= deadline) {
+      return count;
+    }
+    await new Promise((resolve) => setTimeout(resolve, 50));
+  }
+}
+
 async function createDisposableDatabase(label: string): Promise<{ name: string; url: string }> {
   const name = makeDatabaseName(label);
   await createDatabase(name);
@@ -221,9 +244,9 @@ async function applyCoreMigrations(url: string): Promise<void> {
     const aggregate = await discoverAllMigrations({
       coreMigrationsDirectory,
       moduleDiscovery: {
-        moduleSdkVersion: "0.1.0",
+        moduleSdkVersion: "0.2.0",
         modulesDirectory: emptyModulesDirectory,
-        platformVersion: "0.1.0",
+        platformVersion: "0.2.0",
       },
     });
     // Phase 4A's and Phase 4C pass 1's committed migrations must not have drifted while building
@@ -237,6 +260,7 @@ async function applyCoreMigrations(url: string): Promise<void> {
       "core:0005_module_configuration",
       "core:0006_device_identity",
       "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
     ]);
     expect(aggregate.migrations[0]?.checksum).toBe(
       "f8f2086ef06f7a6943e8ffc4350bb010b37aed04c0a72030d2b153c986b1325f",
@@ -339,10 +363,10 @@ async function createGatedRouteModule(
     writeFile(
       path.join(moduleDirectory, "ekklesia.module.json"),
       JSON.stringify({
-        compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
+        compatibility: { moduleSdk: "^0.2.0", platform: "^0.2.0" },
         entrypoints: { server: "./dist/server/index.js" },
         id,
-        manifestVersion: 7,
+        manifestVersion: 8,
         name: `${id} module`,
         permissions: [{ baseline: "public", description: "Gated drain probe.", id: permissionId }],
         version: "0.1.0",
@@ -386,11 +410,11 @@ async function createFixtureModule(
 ): Promise<void> {
   const moduleDirectory = path.join(modulesDirectory, id);
   const manifest = {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
-    compatibility: { platform: "^0.1.0", moduleSdk: "^0.1.0" },
+    compatibility: { platform: "^0.2.0", moduleSdk: "^0.2.0" },
     permissions: [],
     entrypoints: { server: "./dist/server/index.js" },
     ...manifestOverrides,
@@ -521,10 +545,10 @@ async function createUiModule(
     writeFile(
       path.join(moduleDirectory, "ekklesia.module.json"),
       JSON.stringify({
-        compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
+        compatibility: { moduleSdk: "^0.2.0", platform: "^0.2.0" },
         entrypoints: { server: "./dist/server/index.js", ui: "./dist/ui/index.js" },
         id,
-        manifestVersion: 7,
+        manifestVersion: 8,
         name: `${id} module`,
         version,
       }),
@@ -1349,7 +1373,7 @@ describe.sequential("live API — signup, sign-in, principal, sign-out", () => {
     await running.shutdown();
 
     await expect(fetch(origin, { signal: AbortSignal.timeout(1_000) })).rejects.toBeTruthy();
-    const remainingConnections = await activeConnectionCount(database.name);
+    const remainingConnections = await connectionsLeftAfterShutdown(database.name);
     expect(remainingConnections).toBe(0);
 
     await dropDatabase(database.name);
@@ -1498,6 +1522,162 @@ describe.sequential("live API — exported browser auth shell against PostgreSQL
   });
 });
 
+describe.sequential("live API — a person's own account and preferences (ADR 0062)", () => {
+  let database: { name: string; url: string };
+  let running: RunningApi;
+  let origin: string;
+  let ada: { cookie: string; userId: string };
+  let grace: { cookie: string; userId: string };
+  const password = "correct horse battery staple";
+
+  async function account(cookie?: string): Promise<{ status: number; body: unknown }> {
+    const response = await fetch(`${origin}/api/v1/account`, {
+      headers: { origin: dashboardOrigin, ...(cookie ? { cookie } : {}) },
+    });
+    return { body: await response.json(), status: response.status };
+  }
+
+  async function changePreferences(
+    cookie: string | undefined,
+    body: unknown,
+    options: { readonly origin?: string; readonly query?: string } = {},
+  ): Promise<{ status: number; body: unknown }> {
+    const response = await fetch(`${origin}/api/v1/account/preferences${options.query ?? ""}`, {
+      body: JSON.stringify(body),
+      headers: {
+        "content-type": "application/json",
+        origin: options.origin ?? dashboardOrigin,
+        ...(cookie ? { cookie } : {}),
+      },
+      method: "PATCH",
+    });
+    return { body: await response.json(), status: response.status };
+  }
+
+  async function person(email: string): Promise<{ cookie: string; userId: string }> {
+    const created = await signUp(origin, email, password);
+    expect(created.response.status).toBe(200);
+    const session = await signIn(origin, email, password);
+    if (!session.cookiePair) {
+      throw harnessError("The account session cookie was not issued.");
+    }
+    return { cookie: session.cookiePair, userId: created.body.user.id };
+  }
+
+  it("starts a freshly migrated API with two ordinary accounts", async () => {
+    database = await createDisposableDatabase("account_prefs");
+    await applyCoreMigrations(database.url);
+    running = await startMigratedApi(database.url);
+    origin = apiOrigin(running);
+    ada = await person("[email protected]");
+    grace = await person("[email protected]");
+  });
+
+  it("shows each person their own name, email, and the defaults, with no grant", async () => {
+    expect(await account(ada.cookie)).toEqual({
+      body: {
+        email: "[email protected]",
+        name: "Integration Test User",
+        preferences: { appearance: "system", motion: "system" },
+      },
+      status: 200,
+    });
+    expect(((await account(grace.cookie)).body as { email: string }).email).toBe(
+      "[email protected]",
+    );
+  });
+
+  it("refuses an anonymous caller both routes", async () => {
+    expect((await account()).status).toBe(403);
+    expect((await changePreferences(undefined, { appearance: "dark" })).status).toBe(403);
+  });
+
+  it("saves each person's change to their own account only", async () => {
+    expect(await changePreferences(ada.cookie, { appearance: "dark" })).toEqual({
+      body: { appearance: "dark", motion: "system" },
+      status: 200,
+    });
+    expect(await changePreferences(ada.cookie, { motion: "reduce" })).toEqual({
+      body: { appearance: "dark", motion: "reduce" },
+      status: 200,
+    });
+    expect((await account(grace.cookie)).body).toMatchObject({
+      preferences: { appearance: "system", motion: "system" },
+    });
+  });
+
+  it("cannot be pointed at another person's account by the query or the body", async () => {
+    const viaQuery = await changePreferences(
+      ada.cookie,
+      { appearance: "light" },
+      { query: `?userId=${grace.userId}` },
+    );
+    expect(viaQuery).toEqual({ body: { appearance: "light", motion: "reduce" }, status: 200 });
+
+    const viaBody = await changePreferences(ada.cookie, {
+      appearance: "dark",
+      userId: grace.userId,
+    });
+    expect(viaBody).toEqual({ body: { code: "INVALID_REQUEST" }, status: 400 });
+
+    expect((await account(grace.cookie)).body).toMatchObject({
+      preferences: { appearance: "system", motion: "system" },
+    });
+    expect((await account(ada.cookie)).body).toMatchObject({
+      preferences: { appearance: "light", motion: "reduce" },
+    });
+  });
+
+  it("refuses an untrusted Origin and an invalid value, changing nothing", async () => {
+    expect(
+      await changePreferences(ada.cookie, { appearance: "dark" }, { origin: untrustedOrigin }),
+    ).toEqual({ body: { code: "UNTRUSTED_ORIGIN" }, status: 403 });
+    expect(await changePreferences(ada.cookie, { appearance: "sepia" })).toEqual({
+      body: { code: "INVALID_REQUEST" },
+      status: 400,
+    });
+    expect((await account(ada.cookie)).body).toMatchObject({
+      preferences: { appearance: "light", motion: "reduce" },
+    });
+  });
+
+  it("follows the person to a new session, as another device would see it", async () => {
+    const elsewhere = await signIn(origin, "[email protected]", password);
+    expect((await account(elsewhere.cookiePair as string)).body).toMatchObject({
+      preferences: { appearance: "light", motion: "reduce" },
+    });
+  });
+
+  it("stores exactly one typed row, for the one person who chose something", async () => {
+    const admin = await openAdministrativeClient(database.url);
+    try {
+      const rows = await safeQuery<{ user_id: string; appearance: string; motion: string }>(
+        admin,
+        "select user_id, appearance, motion from ekklesia_core_user_preference",
+      );
+      expect(rows).toEqual([{ appearance: "light", motion: "reduce", user_id: ada.userId }]);
+    } finally {
+      await safeEnd(admin);
+    }
+  });
+
+  it("refuses a signed-out session", async () => {
+    const signedOut = await fetch(`${origin}/api/auth/sign-out`, {
+      body: "{}",
+      headers: { "content-type": "application/json", cookie: ada.cookie, origin: dashboardOrigin },
+      method: "POST",
+    });
+    expect(signedOut.status).toBe(200);
+    expect((await account(ada.cookie)).status).toBe(403);
+    expect((await changePreferences(ada.cookie, { appearance: "dark" })).status).toBe(403);
+  });
+
+  it("shuts down cleanly", async () => {
+    await running.shutdown();
+    await dropDatabase(database.name);
+  });
+});
+
 describe.sequential("live API — startup and migration guarantees", () => {
   it("refuses to start against an unmigrated database, and creates no tables or migration history", async () => {
     const database = await createDisposableDatabase("unmigrated");
@@ -2230,7 +2410,7 @@ describe.sequential("live API — platform owner and delegated grant management"
 
   it("shuts down cleanly, closing the one shared pool", async () => {
     await running.shutdown();
-    const remainingConnections = await activeConnectionCount(database.name);
+    const remainingConnections = await connectionsLeftAfterShutdown(database.name);
     expect(remainingConnections).toBe(0);
     await dropDatabase(database.name);
   });
@@ -2592,9 +2772,9 @@ describe.sequential("live API — installed module permission end-to-end", () =>
     const report = await diagnoseEkklesia({
       coreMigrationsDirectory,
       moduleDiscovery: {
-        moduleSdkVersion: "0.1.0",
+        moduleSdkVersion: "0.2.0",
         modulesDirectory,
-        platformVersion: "0.1.0",
+        platformVersion: "0.2.0",
       },
       runtimeRange: ">=0.0.0",
       runtimeVersion: process.versions.node,
@@ -2607,10 +2787,11 @@ describe.sequential("live API — installed module permission end-to-end", () =>
     expect(moduleCheck).toMatchObject({ status: "pass" });
     expect(moduleCheck?.details).toEqual(["calendar 0.1.0"]);
     expect(permissionsCheck).toMatchObject({
-      // Core's own six (`core.authorization.grants.manage`, `core.modules.ui.read`,
+      // Core's own seven (`core.authorization.grants.manage`, `core.modules.ui.read`,
       // `core.dashboard.navigation.manage`, `core.modules.lifecycle.manage`,
-      // `core.modules.configuration.manage`, `core.devices.manage`) plus the fixture module's one.
-      details: ["7 permissions registered"],
+      // `core.modules.configuration.manage`, `core.devices.manage`, `core.account.self.manage`)
+      // plus the fixture module's one.
+      details: ["8 permissions registered"],
       status: "pass",
     });
     // Doctor and permission composition read only the manifest — the fixture's register/start
@@ -2837,7 +3018,7 @@ describe.sequential("live API — installed module permission end-to-end", () =>
 
   it("shuts down cleanly, then restarting with the module absent rejects new grants for its former permission, returns NOT_FOUND for its former route, while the historical grant remains listable", async () => {
     await running.shutdown();
-    const remainingConnections = await activeConnectionCount(database.name);
+    const remainingConnections = await connectionsLeftAfterShutdown(database.name);
     expect(remainingConnections).toBe(0);
     // Exactly one stop, matching the exactly-one register/start already asserted above.
     expect(recorder.events.filter((event) => event === "calendar:stop")).toHaveLength(1);
@@ -3906,9 +4087,9 @@ describe.sequential("live API — module lifecycle governs what actually runs",
     const aggregate = await discoverAllMigrations({
       coreMigrationsDirectory,
       moduleDiscovery: {
-        moduleSdkVersion: "0.1.0",
+        moduleSdkVersion: "0.2.0",
         modulesDirectory,
-        platformVersion: "0.1.0",
+        platformVersion: "0.2.0",
       },
     });
     expect(aggregate.discoveredModules.map((module) => module.manifest.id)).toEqual(["calendar"]);

apps/api/tests/app.test.ts

@@ -1,8 +1,6 @@
 import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   moduleIdSchema,
   parseEkklesiaUserId,
   parsePermissionId,
@@ -20,6 +18,8 @@ import { IdentityRuntimeError } from "@ekklesia/core/identity";
 import {
   createModuleUiPublicationRegistry,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
   type ModuleUiPublicationRegistry,
   StagedModuleRealtimeRegistry,
 } from "@ekklesia/core/modules";
@@ -30,6 +30,7 @@ import {
   createApiApp as createApiAppWithModules,
 } from "../src/app.js";
 import { AUTH_REQUEST_MAX_BODY_BYTES } from "../src/body-limits.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -48,9 +49,9 @@ function fakeRuntime(overrides: Partial<EkklesiaIdentityRuntime> = {}): Ekklesia
   };
 }
 
-/** A small typed fake `ModuleRuntimeServices` — these tests exercise `createApiApp`'s own wiring,
+/** A small typed fake `LegacyModuleRuntimeServices` — these tests exercise `createApiApp`'s own wiring,
  * never real database behavior, so no PostgreSQL is required. */
-function fakeModuleServices(): ModuleRuntimeServices {
+function fakeModuleServices(): LegacyModuleRuntimeServices {
   const database = Object.freeze({
     delete: vi.fn(),
     execute: vi.fn(),
@@ -111,6 +112,7 @@ function createAuthWiringApp(runtime: EkklesiaIdentityRuntime) {
     moduleLifecycle: emptyModuleLifecycle(),
     moduleConfiguration: emptyModuleConfiguration(),
     moduleStorage: emptyModuleStorage(),
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),
@@ -130,6 +132,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -366,6 +369,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -391,6 +395,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -418,6 +423,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -447,6 +453,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -476,6 +483,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -502,6 +510,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -530,6 +539,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -555,6 +565,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -582,6 +593,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -616,6 +628,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -651,6 +664,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -691,6 +705,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -713,6 +728,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -737,6 +753,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -760,6 +777,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -781,6 +799,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -809,6 +828,7 @@ describe("Ekklesia API Hono application", () => {
       moduleLifecycle: emptyModuleLifecycle(),
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),
@@ -840,6 +860,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -874,6 +895,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -899,6 +921,7 @@ describe("Ekklesia API Hono application", () => {
         moduleLifecycle: emptyModuleLifecycle(),
         moduleConfiguration: emptyModuleConfiguration(),
         moduleStorage: emptyModuleStorage(),
+        account: createInMemoryAccountStore(),
         dashboard: createInMemoryDashboardStore(),
         dashboardHostAssets: testDashboardHostAssets(),
         health: readyHealth(),
@@ -938,6 +961,7 @@ describe("split Dashboard and API origins (ADR 0045)", () => {
       moduleConfiguration: emptyModuleConfiguration(),
       moduleStorage: emptyModuleStorage(),
       moduleRealtime,
+      account: createInMemoryAccountStore(),
       dashboard: createInMemoryDashboardStore(),
       dashboardHostAssets: testDashboardHostAssets(),
       health: readyHealth(),

apps/api/tests/dashboard-host-assets.test.ts

@@ -8,6 +8,7 @@ vi.mock("@ekklesia/shell/dashboard-assets", () => ({
   dashboardHostAssetUrls: Object.freeze({
     html: "file:///surface/browser/index.html",
     script: "file:///surface/browser/assets/ekklesia-dashboard/app.js",
+    appearance: "file:///surface/browser/assets/ekklesia-dashboard/appearance.js",
   }),
 }));
 
@@ -28,19 +29,26 @@ function sha256Etag(text: string): string {
 describe("Dashboard host asset loading", () => {
   beforeEach(() => readFileMock.mockReset());
 
-  it("reads only the two declared file URLs in order and freezes one consistent snapshot", async () => {
+  it("reads only the three declared file URLs in order and freezes one consistent snapshot", async () => {
     const html = `<!doctype html>${DASHBOARD_API_ORIGIN_PLACEHOLDER}<div id="ekklesia-host"></div>`;
     const script = "export const dashboardHost = true;\n";
-    readFileMock.mockResolvedValueOnce(html).mockResolvedValueOnce(script);
+    const appearanceScript = "(() => {})();\n";
+    readFileMock
+      .mockResolvedValueOnce(html)
+      .mockResolvedValueOnce(script)
+      .mockResolvedValueOnce(appearanceScript);
 
     const assets = await loadDashboardHostAssets(API_ORIGIN);
 
     expect(readFileMock.mock.calls).toEqual([
       [new URL("file:///surface/browser/index.html"), "utf8"],
       [new URL("file:///surface/browser/assets/ekklesia-dashboard/app.js"), "utf8"],
+      [new URL("file:///surface/browser/assets/ekklesia-dashboard/appearance.js"), "utf8"],
     ]);
     const rendered = `<!doctype html><meta content="${API_ORIGIN}" name="ekklesia-api-origin" /><div id="ekklesia-host"></div>`;
     expect(assets).toEqual({
+      appearanceScript,
+      appearanceScriptEtag: sha256Etag(appearanceScript),
       html: rendered,
       htmlEtag: sha256Etag(rendered),
       script,
@@ -83,12 +91,27 @@ describe("Dashboard host asset loading", () => {
     expect(readFileMock).toHaveBeenCalledTimes(2);
   });
 
-  it("rejects an empty page or script as an unavailable shell build", () => {
-    for (const [html, script] of [
-      ["", "export {};"],
-      ["<html></html>", "   \n"],
+  it("fails when the appearance script is missing even though the page and script were read", async () => {
+    readFileMock
+      .mockResolvedValueOnce(`<!doctype html>${DASHBOARD_API_ORIGIN_PLACEHOLDER}`)
+      .mockResolvedValueOnce("export {};\n")
+      .mockRejectedValueOnce(new Error("ENOENT appearance.js"));
+
+    await expect(loadDashboardHostAssets(API_ORIGIN)).rejects.toBeInstanceOf(
+      DashboardHostAssetError,
+    );
+    expect(readFileMock).toHaveBeenCalledTimes(3);
+  });
+
+  it("rejects an empty page, script, or appearance script as an unavailable shell build", () => {
+    for (const [html, script, appearance] of [
+      ["", "export {};", "(() => {})();"],
+      ["<html></html>", "   \n", "(() => {})();"],
+      ["<html></html>", "export {};", " "],
     ] as const) {
-      expect(() => createDashboardHostAssets(html, script)).toThrow(DashboardHostAssetError);
+      expect(() => createDashboardHostAssets(html, script, appearance)).toThrow(
+        DashboardHostAssetError,
+      );
     }
   });
 
@@ -99,7 +122,10 @@ describe("Dashboard host asset loading", () => {
       '<!doctype html><meta content="https://elsewhere.test" name="ekklesia-api-origin" />',
     ]) {
       readFileMock.mockReset();
-      readFileMock.mockResolvedValueOnce(html).mockResolvedValueOnce("export {};\n");
+      readFileMock
+        .mockResolvedValueOnce(html)
+        .mockResolvedValueOnce("export {};\n")
+        .mockResolvedValueOnce("(() => {})();\n");
       await expect(loadDashboardHostAssets(API_ORIGIN)).rejects.toBeInstanceOf(
         DashboardHostAssetError,
       );

apps/api/tests/dashboard-host-routes.test.ts

@@ -1,9 +1,8 @@
 import { createHash } from "node:crypto";
 import {
   ANONYMOUS_PRINCIPAL,
-  type ModuleDatabase,
   type ModuleRouteHandler,
-  type ModuleRuntimeServices,
+  parseModuleManifest,
   parsePermissionId,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
@@ -15,7 +14,15 @@ import {
 import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
   createModuleUiPublicationRegistry,
+  type DiscoveredModule,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  isReservedModuleId,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
+  type ModuleLifecycleConfiguration,
+  RESERVED_MODULE_IDS,
+  RESERVED_SETTINGS_NAMES,
+  RESERVED_TOP_LEVEL_NAMES,
 } from "@ekklesia/core/modules";
 import { describe, expect, it, vi } from "vitest";
 
@@ -31,13 +38,27 @@ import {
 } from "../src/dashboard-host-assets.js";
 import {
   DASHBOARD_HOST_PAGE_PATH,
+  DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH,
   DASHBOARD_HOST_SCRIPT_PATH,
   DashboardHostConfigurationError,
+  createDashboardHostRoutes,
 } from "../src/dashboard-host-routes.js";
-import { DISPLAY_HOST_SCRIPT_PATH } from "../src/module-display-routes.js";
+import { DASHBOARD_PLATFORM_PAGES, SETTINGS_SECTIONS } from "@ekklesia/shell/dashboard-routes";
+import {
+  MODULE_DISPLAY_DESCRIPTOR_PREFIX,
+  MODULE_DISPLAY_PAGE_PREFIX,
+} from "../src/module-display-path.js";
+import {
+  DISPLAY_HOST_SCRIPT_PATH,
+  DISPLAY_SERVICE_WORKER_PATH,
+} from "../src/module-display-routes.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { emptyModuleConfiguration } from "./support/in-memory-module-configuration.js";
-import { emptyModuleLifecycle } from "./support/in-memory-module-lifecycle.js";
+import {
+  createInMemoryModuleLifecycleStore,
+  moduleLifecycleSnapshotFor,
+} from "./support/in-memory-module-lifecycle.js";
 import { emptyModuleStorage } from "./support/in-memory-module-storage.js";
 import { readyHealth } from "./support/ready-health.js";
 
@@ -54,6 +75,8 @@ function sha256Etag(text: string): string {
 
 const PAGE_ETAG = sha256Etag(PAGE_HTML);
 const SCRIPT_ETAG = sha256Etag(SCRIPT);
+const APPEARANCE_SCRIPT = "(() => { /* pre-paint appearance */ })();\n";
+const APPEARANCE_SCRIPT_ETAG = sha256Etag(APPEARANCE_SCRIPT);
 
 function fakeRuntime(): EkklesiaIdentityRuntime {
   return {
@@ -74,13 +97,44 @@ function fakeStore(): AuthorizationStore {
   };
 }
 
-function fakeModuleServices(): ModuleRuntimeServices {
+function fakeModuleServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as unknown as ModuleDatabase });
 }
 
+/** A discovered module as the boot snapshot records it, from a real validated manifest. Only its id
+ * and whether it declares a Dashboard UI matter to these routes; nothing is ever loaded. */
+function discoveredModule(id: string, options: { readonly ui: boolean }): DiscoveredModule {
+  const manifest = parseModuleManifest({
+    capabilities: [],
+    compatibility: { moduleSdk: "^0.2.0", platform: "^0.2.0" },
+    entrypoints: {
+      server: "./dist/server/index.js",
+      ...(options.ui ? { ui: "./dist/ui/index.js" } : {}),
+    },
+    id,
+    manifestVersion: 8,
+    name: `${id} module`,
+    permissions: [],
+    version: "0.1.0",
+  });
+  return {
+    contributions: [],
+    directory: `/modules/${id}`,
+    entrypoints: {
+      server: `/modules/${id}/dist/server/index.js`,
+      ...(options.ui ? { ui: `/modules/${id}/dist/ui/index.js` } : {}),
+    },
+    manifest,
+    manifestPath: `/modules/${id}/ekklesia.module.json`,
+    packageName: `@test/${id}`,
+  };
+}
+
 function buildApp(
   options: {
     readonly assets?: DashboardHostAssets;
+    readonly configuration?: ModuleLifecycleConfiguration;
+    readonly discovered?: readonly DiscoveredModule[];
     readonly moduleRoutes?: readonly RegisteredModuleHttpRoute[];
   } = {},
 ) {
@@ -100,11 +154,16 @@ function buildApp(
     moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
     moduleServices: fakeModuleServices(),
     moduleUi: createModuleUiPublicationRegistry([]),
-    moduleLifecycle: emptyModuleLifecycle(),
+    moduleLifecycle: {
+      snapshot: moduleLifecycleSnapshotFor(options.discovered ?? [], options.configuration),
+      store: createInMemoryModuleLifecycleStore(),
+    },
     moduleConfiguration: emptyModuleConfiguration(),
     moduleStorage: emptyModuleStorage(),
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
-    dashboardHostAssets: options.assets ?? createDashboardHostAssets(PAGE_HTML, SCRIPT),
+    dashboardHostAssets:
+      options.assets ?? createDashboardHostAssets(PAGE_HTML, SCRIPT, APPEARANCE_SCRIPT),
     health: readyHealth(),
     runtime,
     trustedOrigins: [trustedOrigin],
@@ -193,6 +252,182 @@ describe("GET / (the Dashboard page)", () => {
   });
 });
 
+describe("Dashboard deep links (ADR 0057)", () => {
+  const installed = () => [
+    discoveredModule("signage", { ui: true }),
+    discoveredModule("calendar", { ui: true }),
+    discoveredModule("retired", { ui: true }),
+    // A display-only module has no Dashboard page (ADR 0033).
+    discoveredModule("lobby-screen", { ui: false }),
+  ];
+  // Installed but disabled: its address still opens the Dashboard, which says it is unavailable.
+  const configuration = { modules: [{ enabled: false, moduleId: "retired" }] };
+
+  const deepLinks = [
+    "/settings",
+    "/settings/",
+    "/settings/displays/add",
+    "/account",
+    "/account/appearance",
+    "/signage",
+    "/signage/",
+    // Reserved for the module's own pages, which the shell will interpret (ADR 0057).
+    "/signage/timelines",
+    "/signage/timelines/a1b2",
+    "/calendar",
+    "/retired",
+  ];
+
+  it("serves the shell's own platform pages, from the shell's own list", () => {
+    expect(DASHBOARD_PLATFORM_PAGES).toEqual(["settings", "account"]);
+  });
+
+  it("serves the identical page, validator, and security headers at every Dashboard page, so a refresh stays put", async () => {
+    const { app } = buildApp({ configuration, discovered: installed() });
+
+    for (const path of deepLinks) {
+      const response = await app.request(path);
+      expect(response.status, path).toBe(200);
+      expect(await response.text(), path).toBe(PAGE_HTML);
+      expect(response.headers.get("content-type"), path).toBe("text/html; charset=utf-8");
+      expect(response.headers.get("cache-control"), path).toBe("no-cache");
+      expect(response.headers.get("etag"), path).toBe(PAGE_ETAG);
+      expectPageSecurityHeaders(response);
+    }
+    expect(readFileMock).not.toHaveBeenCalled();
+  });
+
+  it("revalidates a deep link with the page's one validator", async () => {
+    const { app } = buildApp({ discovered: installed() });
+
+    for (const path of ["/settings/displays", "/signage"]) {
+      const response = await app.request(path, { headers: { "If-None-Match": PAGE_ETAG } });
+      expect(response.status, path).toBe(304);
+      expect(await response.text(), path).toBe("");
+      expectPageSecurityHeaders(response);
+    }
+  });
+
+  it("never turns an arbitrary top-level path into a Dashboard page", async () => {
+    const { app } = buildApp({ configuration, discovered: installed() });
+
+    for (const path of [
+      "/definitely-not-a-real-module",
+      "/definitely-not-a-real-module/timelines",
+      // Installed, but with no Dashboard UI.
+      "/lobby-screen",
+      // Look-alikes of real pages.
+      "/signages",
+      "/signage-old",
+      "/Signage",
+      "/settings-old",
+      "/accounts",
+      // The former implementation prefix is not a namespace at all.
+      "/modules",
+      "/modules/signage",
+    ]) {
+      await expectSanitizedNotFound(await app.request(path), path);
+    }
+  });
+
+  it("serves a module's page only while that module is installed", async () => {
+    const { app } = buildApp({ discovered: [] });
+
+    await expectSanitizedNotFound(await app.request("/signage"), "/signage");
+    expect((await app.request("/settings")).status).toBe(200);
+  });
+
+  it("serves the page and never the script, whatever a deep link's last segment looks like", async () => {
+    const { app } = buildApp({ discovered: installed() });
+
+    for (const path of [
+      "/signage/app.js",
+      "/settings/assets/ekklesia-dashboard/app.js",
+      "/account/index.html",
+    ]) {
+      expect(await (await app.request(path)).text(), path).toBe(PAGE_HTML);
+    }
+  });
+
+  it("answers no other method at a Dashboard page", async () => {
+    const { app } = buildApp({ discovered: installed() });
+
+    for (const path of ["/settings/displays", "/signage"]) {
+      for (const method of ["POST", "PUT", "PATCH", "DELETE"]) {
+        await expectSanitizedNotFound(await app.request(path, { method }), `${method} ${path}`);
+      }
+    }
+  });
+
+  it("refuses at composition a module page that would shadow a platform namespace", () => {
+    for (const modulePages of [["api"], ["settings"], ["display"], ["Not-An-Id"], ["a", "a"]]) {
+      expect(
+        () =>
+          createDashboardHostRoutes(
+            createDashboardHostAssets(PAGE_HTML, SCRIPT, APPEARANCE_SCRIPT),
+            { modulePages },
+          ),
+        JSON.stringify(modulePages),
+      ).toThrow(DashboardHostConfigurationError);
+    }
+  });
+});
+
+describe("the platform's reserved top-level names (ADR 0057)", () => {
+  it("cover every top-level namespace the API registers, so a module page can never shadow one", () => {
+    const { app } = buildApp({ discovered: [discoveredModule("signage", { ui: true })] });
+
+    const topLevel = new Set(
+      app.routes
+        .map((route) => route.path.split("/")[1] ?? "")
+        .filter((segment) => segment !== "" && segment !== "*"),
+    );
+    topLevel.delete("signage");
+
+    // This composition publishes no display, so the display host's routes are absent here; they
+    // are checked through their own path constants below.
+    expect([...topLevel].sort()).toEqual(["account", "api", "assets", "settings"]);
+    for (const segment of topLevel) {
+      expect(isReservedModuleId(segment), segment).toBe(true);
+    }
+  });
+
+  it("cover the display host's pages, service worker, and script, and the Dashboard's script", () => {
+    for (const path of [
+      MODULE_DISPLAY_PAGE_PREFIX,
+      DISPLAY_SERVICE_WORKER_PATH,
+      DISPLAY_HOST_SCRIPT_PATH,
+      DASHBOARD_HOST_SCRIPT_PATH,
+      MODULE_DISPLAY_DESCRIPTOR_PREFIX,
+    ]) {
+      expect(isReservedModuleId(path.split("/")[1] ?? ""), path).toBe(true);
+    }
+    expect([...RESERVED_TOP_LEVEL_NAMES].sort()).toEqual([
+      "account",
+      "api",
+      "assets",
+      "display",
+      "settings",
+    ]);
+  });
+
+  it("include every Dashboard platform page the shell interprets", () => {
+    for (const page of DASHBOARD_PLATFORM_PAGES) {
+      expect(RESERVED_TOP_LEVEL_NAMES, page).toContain(page);
+    }
+  });
+
+  it("include exactly the Settings sections the shell interprets, so /settings/<module-id> never collides (ADR 0061)", () => {
+    expect([...SETTINGS_SECTIONS].sort()).toEqual([...RESERVED_SETTINGS_NAMES]);
+    for (const section of SETTINGS_SECTIONS) {
+      expect(isReservedModuleId(section), section).toBe(true);
+    }
+    expect(RESERVED_MODULE_IDS).toEqual(
+      [...RESERVED_TOP_LEVEL_NAMES, ...RESERVED_SETTINGS_NAMES].sort(),
+    );
+  });
+});
+
 describe("GET /assets/ekklesia-dashboard/app.js (the Dashboard script)", () => {
   it("serves the exact startup script bytes as JavaScript with revalidation and a strong ETag", async () => {
     const { app } = buildApp();
@@ -231,8 +466,45 @@ describe("GET /assets/ekklesia-dashboard/app.js (the Dashboard script)", () => {
   });
 });
 
+describe("GET /assets/ekklesia-dashboard/appearance.js (the pre-paint appearance script)", () => {
+  it("serves the exact pre-paint script as JavaScript with revalidation and its own strong ETag", async () => {
+    const { app } = buildApp();
+
+    const response = await app.request(DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH);
+
+    expect(response.status).toBe(200);
+    expect(await response.text()).toBe(APPEARANCE_SCRIPT);
+    expect(response.headers.get("content-type")).toBe("text/javascript; charset=utf-8");
+    expect(response.headers.get("cache-control")).toBe("no-cache");
+    expect(response.headers.get("etag")).toBe(APPEARANCE_SCRIPT_ETAG);
+    expect(response.headers.get("x-content-type-options")).toBe("nosniff");
+    // Code only: nothing about any viewer, and nothing that varies by request.
+    expect(response.headers.get("set-cookie")).toBeNull();
+    expect(response.headers.get("vary")).toBeNull();
+  });
+
+  it("answers a matching If-None-Match with a 304, and does not accept the app script's validator", async () => {
+    const { app } = buildApp();
+
+    const notModified = await app.request(DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH, {
+      headers: { "If-None-Match": APPEARANCE_SCRIPT_ETAG },
+    });
+    expect(notModified.status).toBe(304);
+    expect(notModified.headers.get("etag")).toBe(APPEARANCE_SCRIPT_ETAG);
+
+    const other = await app.request(DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH, {
+      headers: { "If-None-Match": SCRIPT_ETAG },
+    });
+    expect(other.status).toBe(200);
+  });
+
+  it("lives beside the app script, in the Dashboard's own asset namespace", () => {
+    expect(DASHBOARD_HOST_APPEARANCE_SCRIPT_PATH).toBe("/assets/ekklesia-dashboard/appearance.js");
+  });
+});
+
 describe("Dashboard host boundaries", () => {
-  it("serves nothing but its two exact paths, answering every other spelling with the sanitized 404", async () => {
+  it("serves nothing but its exact paths, answering every other spelling with the sanitized 404", async () => {
     const { app } = buildApp();
 
     for (const path of [
@@ -246,6 +518,10 @@ describe("Dashboard host boundaries", () => {
       "/assets/ekklesia-dashboard/index.html",
       "/assets/",
       "/assets/ekklesia-dashboard/APP.JS",
+      "/assets/ekklesia-dashboard/appearance.js.map",
+      "/assets/ekklesia-dashboard/appearance.js/",
+      "/assets/ekklesia-dashboard/APPEARANCE.JS",
+      "/appearance.js",
       "/dashboard",
       "/login",
     ]) {
@@ -334,12 +610,21 @@ describe("Dashboard host boundaries", () => {
   });
 
   it("refuses at composition a snapshot whose validator does not match its bytes, or empty bytes", () => {
-    const consistent = createDashboardHostAssets(PAGE_HTML, SCRIPT);
+    const consistent = createDashboardHostAssets(PAGE_HTML, SCRIPT, APPEARANCE_SCRIPT);
 
     for (const assets of [
       { ...consistent, html: `${PAGE_HTML}<!-- tampered -->` },
       { ...consistent, scriptEtag: PAGE_ETAG },
-      { html: "", htmlEtag: sha256Etag(""), script: SCRIPT, scriptEtag: SCRIPT_ETAG },
+      { ...consistent, appearanceScriptEtag: SCRIPT_ETAG },
+      { ...consistent, appearanceScript: `${APPEARANCE_SCRIPT}// tampered` },
+      {
+        appearanceScript: APPEARANCE_SCRIPT,
+        appearanceScriptEtag: APPEARANCE_SCRIPT_ETAG,
+        html: "",
+        htmlEtag: sha256Etag(""),
+        script: SCRIPT,
+        scriptEtag: SCRIPT_ETAG,
+      },
     ]) {
       expect(() => buildApp({ assets })).toThrow(DashboardHostConfigurationError);
     }

apps/api/tests/dashboard-routes.test.ts

@@ -5,8 +5,6 @@ import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
   type EkklesiaPrincipal,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -20,12 +18,15 @@ import {
   createModuleUiPublicationRegistry,
   discoverModules,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
 } from "@ekklesia/core/modules";
 import type { Hono } from "hono";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { createApiApp } from "../src/app.js";
 import { DASHBOARD_NAVIGATION_PATH } from "../src/dashboard-routes.js";
 import { MODULE_UI_INVENTORY_PATH } from "../src/module-ui-inventory.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -77,7 +78,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         ...(fixture.withUi === false ? {} : { ui: "./dist/ui/index.js" }),
       },
       id: fixture.id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: fixture.name,
       version: "1.0.0",
     }),
@@ -140,6 +141,7 @@ async function install(options: InstallOptions = {}): Promise<{ app: Hono }> {
 
   const app = createApiApp({
     authorization: { evaluator, registry: composePlatformPermissionRegistry(modules), store },
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(options.configuration ?? {}),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),
@@ -147,7 +149,7 @@ async function install(options: InstallOptions = {}): Promise<{ app: Hono }> {
     moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
     moduleServices: Object.freeze({
       database: Object.freeze({}) as unknown as ModuleDatabase,
-    }) as ModuleRuntimeServices,
+    }) as LegacyModuleRuntimeServices,
     moduleUi: createModuleUiPublicationRegistry(modules),
     moduleLifecycle: {
       snapshot: moduleLifecycleSnapshotFor(modules),

apps/api/tests/dashboard-settings-routes.test.ts

@@ -0,0 +1,250 @@
+import {
+  ANONYMOUS_PRINCIPAL,
+  createAuthenticatedPrincipal,
+  type EkklesiaPrincipal,
+  parseEkklesiaUserId,
+  parseModuleManifest,
+} from "@ekklesia/contracts";
+import {
+  type AuthorizationStore,
+  CORE_DEVICES_MANAGE,
+  CORE_MODULES_CONFIGURATION_MANAGE,
+  CORE_MODULES_LIFECYCLE_MANAGE,
+  createAuthorizationEvaluator,
+} from "@ekklesia/core/authorization";
+import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
+import {
+  composePlatformPermissionRegistry,
+  createModuleUiPublicationRegistry,
+  type DiscoveredModule,
+  EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
+  type ModuleLifecycleConfiguration,
+} from "@ekklesia/core/modules";
+import { describe, expect, it, vi } from "vitest";
+import { createApiApp } from "../src/app.js";
+import {
+  DASHBOARD_SETTINGS_PATH,
+  type DashboardSettingsResponse,
+} from "../src/dashboard-settings-routes.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
+import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
+import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
+import { emptyModuleConfiguration } from "./support/in-memory-module-configuration.js";
+import {
+  createInMemoryModuleLifecycleStore,
+  moduleLifecycleSnapshotFor,
+} from "./support/in-memory-module-lifecycle.js";
+import { emptyModuleStorage } from "./support/in-memory-module-storage.js";
+import { readyHealth } from "./support/ready-health.js";
+
+/**
+ * `GET /api/v1/dashboard/settings` (ADR 0061): which Settings destinations the viewer may see,
+ * evaluated by the server through Core's one authorization evaluator. Presentation hints, never
+ * authority: every Settings data route keeps its own enforcement.
+ */
+
+const viewerId = parseEkklesiaUserId("44444444-4444-4444-8444-444444444444");
+const viewer = createAuthenticatedPrincipal(viewerId);
+
+function discovered(
+  id: string,
+  options: { readonly name?: string; readonly settings: boolean },
+): DiscoveredModule {
+  const manifest = parseModuleManifest({
+    capabilities: [],
+    compatibility: { moduleSdk: "^0.2.0", platform: "^0.2.0" },
+    configuration: options.settings
+      ? [
+          {
+            default: "Hello",
+            description: "A greeting.",
+            key: "greeting",
+            maxLength: 40,
+            type: "string",
+          },
+        ]
+      : [],
+    entrypoints: { server: "./dist/server/index.js", ui: "./dist/ui/index.js" },
+    id,
+    manifestVersion: 8,
+    name: options.name ?? `${id} module`,
+    permissions: [],
+    version: "0.1.0",
+  });
+  return {
+    contributions: [],
+    directory: `/modules/${id}`,
+    entrypoints: {
+      server: `/modules/${id}/dist/server/index.js`,
+      ui: `/modules/${id}/dist/ui/index.js`,
+    },
+    manifest,
+    manifestPath: `/modules/${id}/ekklesia.module.json`,
+    packageName: `@test/${id}`,
+  };
+}
+
+interface Options {
+  readonly principal?: EkklesiaPrincipal;
+  readonly owner?: boolean;
+  readonly grants?: readonly string[];
+  readonly modules?: readonly DiscoveredModule[];
+  readonly configuration?: ModuleLifecycleConfiguration;
+  readonly ownerLookupFails?: boolean;
+}
+
+function build(options: Options = {}) {
+  const modules = options.modules ?? [
+    discovered("signage", { name: "Signage", settings: true }),
+    discovered("calendar", { name: "Calendar", settings: true }),
+    discovered("retired", { name: "Archive", settings: true }),
+    discovered("plain", { name: "Plain", settings: false }),
+  ];
+  const isPlatformOwner = vi.fn(async () => {
+    if (options.ownerLookupFails) {
+      throw new Error("database down");
+    }
+    return options.owner === true;
+  });
+  const grants = new Set(options.grants ?? []);
+  const evaluator = createAuthorizationEvaluator({
+    grants: { hasActiveGrant: async ({ permission }) => grants.has(String(permission)) },
+    platformOwners: { isPlatformOwner },
+  });
+  const runtime: EkklesiaIdentityRuntime = {
+    handleAuthRequest: vi.fn(),
+    resolvePrincipal: vi.fn().mockResolvedValue(options.principal ?? viewer),
+  };
+  const store = {
+    createGrant: vi.fn(),
+    grantPlatformOwner: vi.fn(),
+    hasActiveGrant: vi.fn(),
+    isPlatformOwner,
+    listGrantsForUser: vi.fn(),
+    revokeGrant: vi.fn(),
+    revokePlatformOwner: vi.fn(),
+  } as unknown as AuthorizationStore;
+  const app = createApiApp({
+    authorization: { evaluator, registry: composePlatformPermissionRegistry(modules), store },
+    account: createInMemoryAccountStore(),
+    dashboard: createInMemoryDashboardStore(),
+    dashboardHostAssets: testDashboardHostAssets(),
+    health: readyHealth(),
+    moduleConfiguration: emptyModuleConfiguration(),
+    moduleLifecycle: {
+      snapshot: moduleLifecycleSnapshotFor(
+        modules,
+        options.configuration ?? { modules: [{ enabled: false, moduleId: "retired" }] },
+      ),
+      store: createInMemoryModuleLifecycleStore(),
+    },
+    moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
+    moduleRoutes: Object.freeze([]),
+    moduleServices: Object.freeze({
+      database: Object.freeze({}) as unknown as ModuleDatabase,
+    }) as LegacyModuleRuntimeServices,
+    moduleStorage: emptyModuleStorage(),
+    moduleUi: createModuleUiPublicationRegistry([]),
+    runtime,
+    trustedOrigins: ["https://dashboard.example.test"],
+  });
+  return { app, isPlatformOwner };
+}
+
+async function settings(options: Options = {}) {
+  const { app } = build(options);
+  const response = await app.request(DASHBOARD_SETTINGS_PATH);
+  const body =
+    response.status === 200 ? ((await response.json()) as DashboardSettingsResponse) : undefined;
+  return { body, response };
+}
+
+describe("GET /api/v1/dashboard/settings", () => {
+  it("shows a signed-in person with no administrative permission nothing at all", async () => {
+    const { body, response } = await settings();
+
+    expect(response.status).toBe(200);
+    expect(response.headers.get("cache-control")).toBe("no-store");
+    expect(body).toEqual({ modules: [], sections: [] });
+  });
+
+  it("refuses an anonymous viewer, like the navigation it sits beside", async () => {
+    const { response } = await settings({ principal: ANONYMOUS_PRINCIPAL });
+
+    expect(response.status).toBe(403);
+  });
+
+  it("shows the platform owner every section, in order, and every module with settings", async () => {
+    const { body } = await settings({ owner: true });
+
+    expect(body).toEqual({
+      modules: [
+        { available: false, id: "retired", name: "Archive" },
+        { available: true, id: "calendar", name: "Calendar" },
+        { available: true, id: "signage", name: "Signage" },
+      ],
+      sections: ["general", "branding", "displays", "discover", "system"],
+    });
+  });
+
+  it("shows Displays exactly to whoever may manage devices", async () => {
+    const { body } = await settings({ grants: [String(CORE_DEVICES_MANAGE)] });
+
+    expect(body).toEqual({ modules: [], sections: ["displays"] });
+  });
+
+  it("shows Discover — module lifecycle — exactly to whoever may manage which modules run", async () => {
+    const { body } = await settings({ grants: [String(CORE_MODULES_LIFECYCLE_MANAGE)] });
+
+    expect(body).toEqual({ modules: [], sections: ["discover"] });
+  });
+
+  it("lists modules' settings exactly to whoever may configure modules, flagging disabled ones", async () => {
+    const { body } = await settings({ grants: [String(CORE_MODULES_CONFIGURATION_MANAGE)] });
+
+    // A module that declares no configuration has no settings page; a disabled module is listed so
+    // its address can say it is unavailable, but marked so the Dashboard does not navigate to it.
+    expect(body).toEqual({
+      modules: [
+        { available: false, id: "retired", name: "Archive" },
+        { available: true, id: "calendar", name: "Calendar" },
+        { available: true, id: "signage", name: "Signage" },
+      ],
+      sections: [],
+    });
+  });
+
+  it("keeps General, Branding, and System to the platform owner until each has a permission of its own", async () => {
+    const { body } = await settings({
+      grants: [
+        String(CORE_DEVICES_MANAGE),
+        String(CORE_MODULES_LIFECYCLE_MANAGE),
+        String(CORE_MODULES_CONFIGURATION_MANAGE),
+      ],
+    });
+
+    expect(body?.sections).toEqual(["displays", "discover"]);
+  });
+
+  it("is a 503, never an empty answer, when authorization cannot be evaluated", async () => {
+    const { response } = await settings({ ownerLookupFails: true });
+
+    expect(response.status).toBe(503);
+    expect(await response.json()).toEqual({ code: "AUTHORIZATION_EVALUATION_FAILED" });
+  });
+
+  it("is a hint, not authority: the data behind a section stays refused without its permission", async () => {
+    const { app } = build({ grants: [] });
+
+    for (const path of [
+      "/api/v1/module-lifecycle",
+      "/api/v1/module-configuration/signage",
+      "/api/v1/grants",
+    ]) {
+      const response = await app.request(path);
+      expect(response.status, path).toBe(403);
+    }
+  });
+});

apps/api/tests/device-pairing.integration.ts

@@ -118,13 +118,13 @@ async function createDisplayModuleDirectory(): Promise<string> {
     writeFile(
       path.join(moduleDirectory, "ekklesia.module.json"),
       JSON.stringify({
-        compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
+        compatibility: { moduleSdk: "^0.2.0", platform: "^0.2.0" },
         entrypoints: {
           display: { artifact: "./dist/ui/display.js", permission: displayPermission },
           server: "./dist/server/index.js",
         },
         id: "announcements",
-        manifestVersion: 7,
+        manifestVersion: 8,
         name: "Announcements fixture",
         permissions: [
           {
@@ -782,6 +782,127 @@ describe.sequential("display device pairing, end to end", () => {
     }
   });
 
+  /**
+   * ADR 0056: a credential lasts while the screen is in use, and dies 180 days after it was last
+   * seen. Ages are set directly in the database, exactly as months of real use would leave them.
+   */
+  describe("credential lifetime", () => {
+    const ttlSeconds = 180 * 24 * 60 * 60;
+    const descriptor = "/api/v1/module-displays/announcements";
+
+    function renewal(response: Response): string | undefined {
+      return setCookieFor(response, "ekklesia_device_session");
+    }
+
+    it("keeps a screen that is in use paired long past 180 days, renewing its cookie", async () => {
+      const running = await platform("renewal");
+      const device = new DeviceBrowser(running.origin);
+      try {
+        await pairDevice(running, device);
+        const credential = device.header().replace(/^.*ekklesia_device_session=/u, "");
+        // Paired 200 days ago, and seen yesterday: a screen that has simply been working.
+        await query(
+          running.url,
+          `update ekklesia_core_device set created_at = now() - interval '200 days', last_seen_at = now() - interval '1 day'`,
+        );
+
+        const response = await device.request(descriptor);
+        expect(response.status).toBe(200);
+        // The same credential, re-issued with a full lifetime and the same protections.
+        const header = renewal(response);
+        expect(header).toBeDefined();
+        expect(header).toContain(`ekklesia_device_session=${credential};`);
+        expect(header).toMatch(new RegExp(`Max-Age=${ttlSeconds}(;|$)`, "u"));
+        expect(header).toMatch(/HttpOnly/u);
+        expect(header).toMatch(/SameSite=Strict/u);
+        expect(header).toMatch(/Path=\//u);
+        expect(header).not.toMatch(/Domain=/iu);
+
+        // Using it moved the server's window forward too.
+        const [row] = await query<{ recent: boolean }>(
+          running.url,
+          `select last_seen_at > now() - interval '1 minute' as recent from ekklesia_core_device`,
+        );
+        expect(row?.recent).toBe(true);
+      } finally {
+        await running.close();
+      }
+    });
+
+    it("keeps a credential paired under the fixed 180-day rule working once it is renewed", async () => {
+      const running = await platform("legacy");
+      const device = new DeviceBrowser(running.origin);
+      try {
+        await pairDevice(running, device);
+        // A production screen paired 179 days ago that checked in this morning: under the old
+        // rule it had one day left. It must carry straight on.
+        await query(
+          running.url,
+          `update ekklesia_core_device set created_at = now() - interval '179 days', last_seen_at = now() - interval '2 hours'`,
+        );
+        expect((await device.request(descriptor)).status).toBe(200);
+        await query(
+          running.url,
+          `update ekklesia_core_device set created_at = now() - interval '190 days'`,
+        );
+        expect((await device.request(descriptor)).status).toBe(200);
+      } finally {
+        await running.close();
+      }
+    });
+
+    it("lets an abandoned screen stop being an identity 180 days after it was last seen", async () => {
+      const running = await platform("abandoned");
+      const device = new DeviceBrowser(running.origin);
+      try {
+        await pairDevice(running, device);
+        await query(
+          running.url,
+          `update ekklesia_core_device set created_at = now() - interval '400 days', last_seen_at = now() - interval '181 days'`,
+        );
+        const response = await device.request(descriptor);
+        // Anonymous, exactly as revoked or wrong credentials are: the screen shows a pairing code.
+        expect(response.status).toBe(403);
+        expect(renewal(response)).toBeUndefined();
+      } finally {
+        await running.close();
+      }
+    });
+
+    it("never renews a revoked screen", async () => {
+      const running = await platform("revoked-renewal");
+      const device = new DeviceBrowser(running.origin);
+      try {
+        await pairDevice(running, device);
+        const listed = (await (
+          await adminRequest(running.origin, running.ownerCookie, "/api/v1/devices")
+        ).json()) as { devices: Array<{ id: string }> };
+        await adminRequest(
+          running.origin,
+          running.ownerCookie,
+          `/api/v1/devices/${listed.devices[0]?.id}/revoke`,
+          {},
+        );
+        const response = await device.request(descriptor);
+        expect(response.status).toBe(403);
+        expect(renewal(response)).toBeUndefined();
+      } finally {
+        await running.close();
+      }
+    });
+
+    it("does not hand a device cookie to a person viewing the display", async () => {
+      const running = await platform("human-renewal");
+      try {
+        const response = await adminRequest(running.origin, running.ownerCookie, descriptor);
+        expect(response.status).toBe(200);
+        expect(renewal(response)).toBeUndefined();
+      } finally {
+        await running.close();
+      }
+    });
+  });
+
   it("keeps a human administrator's own session unaffected by a device cookie", async () => {
     const running = await platform("mixed");
     const device = new DeviceBrowser(running.origin);

apps/api/tests/health-routes.test.ts

@@ -1,8 +1,6 @@
 import {
   ANONYMOUS_PRINCIPAL,
-  type ModuleDatabase,
   type ModuleRouteHandler,
-  type ModuleRuntimeServices,
   parsePermissionId,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
@@ -15,6 +13,8 @@ import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
   createModuleUiPublicationRegistry,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
 } from "@ekklesia/core/modules";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { createApiApp } from "../src/app.js";
@@ -24,6 +24,7 @@ import {
   HEALTH_READY_PATH,
   READINESS_DATABASE_TIMEOUT_MS,
 } from "../src/health-routes.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { emptyModuleConfiguration } from "./support/in-memory-module-configuration.js";
@@ -56,7 +57,7 @@ function fakeStore(): AuthorizationStore {
   };
 }
 
-function fakeModuleServices(): ModuleRuntimeServices {
+function fakeModuleServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as unknown as ModuleDatabase });
 }
 
@@ -91,6 +92,7 @@ function buildApp(
     moduleLifecycle: emptyModuleLifecycle(),
     moduleConfiguration: emptyModuleConfiguration(),
     moduleStorage: emptyModuleStorage(),
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health,

apps/api/tests/lifecycle.test.ts

@@ -20,7 +20,7 @@ vi.mock("@hono/node-server", () => ({ serve: serveMock }));
 vi.mock("../src/dashboard-host-assets.js", async (importOriginal) => {
   const actual = await importOriginal<typeof import("../src/dashboard-host-assets.js")>();
   loadDashboardHostAssetsMock.mockImplementation(async () =>
-    actual.createDashboardHostAssets("<!doctype html>", "export {};\n"),
+    actual.createDashboardHostAssets("<!doctype html>", "export {};\n", "(() => {})();\n"),
   );
   return { ...actual, loadDashboardHostAssets: loadDashboardHostAssetsMock };
 });
@@ -104,11 +104,11 @@ async function createFixtureModule(
 ): Promise<void> {
   const moduleDirectory = path.join(modulesDirectory, id);
   const manifest = {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
-    compatibility: { platform: "^0.1.0", moduleSdk: "^0.1.0" },
+    compatibility: { platform: "^0.2.0", moduleSdk: "^0.2.0" },
     permissions: [],
     entrypoints: { server: "./dist/server/index.js" },
     ...manifestOverrides,
@@ -267,10 +267,10 @@ function fakeDiscoveredModule(
 ): DiscoveredModule {
   const manifest = parseModuleManifest({
     capabilities: [],
-    compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
+    compatibility: { moduleSdk: "^0.2.0", platform: "^0.2.0" },
     entrypoints: { server: "./dist/does-not-exist/index.js" },
     id,
-    manifestVersion: 7,
+    manifestVersion: 8,
     name: `${id} module`,
     permissions,
     version: "0.1.0",
@@ -1435,9 +1435,9 @@ describe("Ekklesia API module runtime startup and shutdown", () => {
     const recorder = createEventRecorder();
     await createWorkingFixtureModule(modulesDirectory, "calendar", recorder, { withRoute: true });
     const discovered = await (await import("@ekklesia/core/modules")).discoverModules({
-      moduleSdkVersion: "0.1.0",
+      moduleSdkVersion: "0.2.0",
       modulesDirectory,
-      platformVersion: "0.1.0",
+      platformVersion: "0.2.0",
     });
     mockPoolAndAuth();
     mockSuccessfulServe();

apps/api/tests/module-configuration-routes.test.ts

@@ -6,8 +6,6 @@ import {
   createAuthenticatedPrincipal,
   type EkklesiaPrincipal,
   type ModuleConfigurationDeclarationInput,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -22,10 +20,12 @@ import {
   createModuleUiPublicationRegistry,
   type DiscoveredModule,
   discoverModules,
+  type LegacyModuleRuntimeServices,
   type ModuleConfigurationRecord,
   type ModuleConfigurationStore,
   ModuleConfigurationStoreError,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type ModuleDatabase,
   resolveModuleEligibility,
 } from "@ekklesia/core/modules";
 import type { Hono } from "hono";
@@ -34,6 +34,7 @@ import { createApiApp } from "../src/app.js";
 import { CORE_MUTATION_MAX_BODY_BYTES } from "../src/body-limits.js";
 import { MODULE_CONFIGURATION_PATH } from "../src/module-configuration-routes.js";
 import { MODULE_LIFECYCLE_PATH } from "../src/module-lifecycle-routes.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -108,7 +109,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         configuration: fixture.configuration ?? [],
         entrypoints: { server: "./dist/server/index.js" },
         id: fixture.id,
-        manifestVersion: 7,
+        manifestVersion: 8,
         name: `${fixture.id} module`,
         version: "1.0.0",
       }),
@@ -190,6 +191,7 @@ async function install(options: InstallOptions = {}): Promise<Installation> {
       registry: composePlatformPermissionRegistry(modules),
       store: authorizationStore,
     },
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),
@@ -213,7 +215,7 @@ async function install(options: InstallOptions = {}): Promise<Installation> {
     moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
     moduleServices: Object.freeze({
       database: Object.freeze({}) as unknown as ModuleDatabase,
-    }) as ModuleRuntimeServices,
+    }) as LegacyModuleRuntimeServices,
     moduleUi: createModuleUiPublicationRegistry(eligibility.eligibleModules),
     runtime,
     trustedOrigins: [trustedOrigin],

apps/api/tests/module-database.integration.ts

@@ -8,6 +8,7 @@ import {
   createPostgresMigrationDatabase,
   discoverAllMigrations,
 } from "@ekklesia/core/migrations";
+import { moduleDatabaseExecutorModuleId } from "@ekklesia/core/modules";
 import { Client, type QueryResultRow } from "pg";
 import { afterAll, describe, expect, it } from "vitest";
 import { createApiRuntimeConfig } from "../src/config.js";
@@ -194,6 +195,29 @@ async function activeConnectionCount(databaseName: string): Promise<number> {
   }
 }
 
+/** How long a shutdown's closed connections may take to leave `pg_stat_activity`. Far below pg's
+ * 10 s idle timeout, so a connection that is genuinely still open is still caught. */
+const SHUTDOWN_SETTLE_MS = 3_000;
+
+/**
+ * The connections left on `databaseName` once a shutdown has had a moment to land.
+ *
+ * PostgreSQL ends a backend asynchronously: `pool.end()` resolves once the client side has closed,
+ * and the server can still list that backend for a moment afterwards. On a loaded CI runner that
+ * moment was long enough for an immediate count to see one. So this waits, briefly, for the count to
+ * reach zero; a leaked pooled client would stay idle and listed far past the deadline.
+ */
+async function connectionsLeftAfterShutdown(databaseName: string): Promise<number> {
+  const deadline = Date.now() + SHUTDOWN_SETTLE_MS;
+  for (;;) {
+    const count = await activeConnectionCount(databaseName);
+    if (count === 0 || Date.now() >= deadline) {
+      return count;
+    }
+    await new Promise((resolve) => setTimeout(resolve, 50));
+  }
+}
+
 async function createDisposableDatabase(label: string): Promise<{ name: string; url: string }> {
   const name = makeDatabaseName(label);
   await createDatabase(name);
@@ -211,9 +235,9 @@ async function applyCoreMigrations(url: string): Promise<void> {
     const aggregate = await discoverAllMigrations({
       coreMigrationsDirectory,
       moduleDiscovery: {
-        moduleSdkVersion: "0.1.0",
+        moduleSdkVersion: "0.2.0",
         modulesDirectory: emptyModulesDirectory,
-        platformVersion: "0.1.0",
+        platformVersion: "0.2.0",
       },
     });
     expect(aggregate.migrations.map((entry) => entry.identity)).toEqual([
@@ -225,6 +249,7 @@ async function applyCoreMigrations(url: string): Promise<void> {
       "core:0005_module_configuration",
       "core:0006_device_identity",
       "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
     ]);
     await applyModuleMigrations({ aggregate, database: createPostgresMigrationDatabase(url) });
   } finally {
@@ -240,9 +265,9 @@ async function applyMigrationsWithModule(url: string): Promise<void> {
   const aggregate = await discoverAllMigrations({
     coreMigrationsDirectory,
     moduleDiscovery: {
-      moduleSdkVersion: "0.1.0",
+      moduleSdkVersion: "0.2.0",
       modulesDirectory: fixtureModulesDirectory,
-      platformVersion: "0.1.0",
+      platformVersion: "0.2.0",
     },
   });
   // Core migrations aggregate first, exactly once each, and always before any module migration.
@@ -255,6 +280,7 @@ async function applyMigrationsWithModule(url: string): Promise<void> {
     "core:0005_module_configuration",
     "core:0006_device_identity",
     "core:0007_verified_bootstrap_owners",
+    "core:0008_user_preferences",
     "db-facade:0000_initial",
   ]);
   expect(aggregate.migrations[0]?.checksum).toBe(
@@ -441,6 +467,11 @@ describe.sequential("live API — module database explicit migration ownership",
 
       const handle = createApiDatabase(database.url);
       expect(handle.module).toBeDefined();
+      const alpha = handle.moduleExecutor("alpha");
+      const beta = handle.moduleExecutor("beta");
+      expect(alpha).not.toBe(beta);
+      expect(moduleDatabaseExecutorModuleId(alpha)).toBe("alpha");
+      expect(moduleDatabaseExecutorModuleId(beta)).toBe("beta");
       await handle.close();
       expect(await tableExists(database.url)).toBe(false);
 
@@ -754,7 +785,7 @@ describe.sequential("live API — module database access through ModuleRuntimeSe
 
     await running.shutdown();
 
-    const remainingConnections = await activeConnectionCount(database.name);
+    const remainingConnections = await connectionsLeftAfterShutdown(database.name);
     expect(remainingConnections).toBe(0);
 
     const eventsAfterShutdown = readRecorder();

apps/api/tests/module-display-routes.test.ts

@@ -5,8 +5,6 @@ import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
   type EkklesiaPrincipal,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -21,6 +19,8 @@ import {
   type DiscoveredModule,
   discoverModules,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
 } from "@ekklesia/core/modules";
 import type { Hono } from "hono";
 import { afterEach, describe, expect, it, vi } from "vitest";
@@ -37,6 +37,7 @@ import { moduleApiBaseUrl } from "../src/module-http-routes.js";
 import { moduleRealtimeBaseUrl } from "../src/module-realtime-routes.js";
 import { MODULE_UI_INVENTORY_PATH } from "../src/module-ui-inventory.js";
 import { moduleDisplayUiArtifactUrl } from "../src/module-ui-routes.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -105,7 +106,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture = {
           : {}),
       },
       id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${id} module`,
       permissions: fixture.display
         ? [
@@ -155,7 +156,7 @@ interface Installation {
   readonly modules: readonly DiscoveredModule[];
 }
 
-function fakeServices(): ModuleRuntimeServices {
+function fakeServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as unknown as ModuleDatabase });
 }
 
@@ -199,6 +200,7 @@ async function install(options: InstallOptions): Promise<Installation> {
       registry: composePlatformPermissionRegistry(modules),
       store: fakeAuthorizationStore(),
     },
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),

apps/api/tests/module-http-routes.test.ts

@@ -1,13 +1,11 @@
 import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
-  type ModuleDatabase,
   type ModuleRouteHandler,
   type ModuleRouteHandlerContext,
-  type ModuleRuntimeServices,
   moduleRoutesOverlap,
-  parsePermissionId,
   type PermissionId,
+  parsePermissionId,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
 import {
@@ -20,20 +18,24 @@ import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
   createModuleUiPublicationRegistry,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
+  type ModuleRuntimeServicesLookup,
 } from "@ekklesia/core/modules";
 import { describe, expect, it, vi } from "vitest";
-import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
-import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
-import { readyHealth } from "./support/ready-health.js";
 import { createApiApp } from "../src/app.js";
 import {
   canonicalizeVaryHeader,
-  mergedVaryHeader,
   ModuleRouteConfigurationError,
+  mergedVaryHeader,
 } from "../src/module-http-routes.js";
-import { emptyModuleLifecycle } from "./support/in-memory-module-lifecycle.js";
+import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
+import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { emptyModuleConfiguration } from "./support/in-memory-module-configuration.js";
+import { emptyModuleLifecycle } from "./support/in-memory-module-lifecycle.js";
 import { emptyModuleStorage } from "./support/in-memory-module-storage.js";
+import { readyHealth } from "./support/ready-health.js";
 
 const trustedOrigin = "https://dashboard.example.test";
 const untrustedOrigin = "https://evil.example.test";
@@ -73,11 +75,11 @@ function moduleRoute(
   return Object.freeze({ bodyMode: "buffered", maxBodyBytes: 1024, ...fields });
 }
 
-/** A small typed fake `ModuleRuntimeServices` — these tests exercise route mounting,
+/** A small typed fake `LegacyModuleRuntimeServices` — these tests exercise route mounting,
  * authorization, and response sanitization, never real database behavior, so no PostgreSQL is
  * required. Each `database` method stays a distinct spy so a test can assert none of them were
  * ever called (denied, trusted-origin-rejected, and `OPTIONS` requests never reach a handler). */
-function fakeModuleServices(): ModuleRuntimeServices {
+function fakeModuleServices(): LegacyModuleRuntimeServices {
   const database = Object.freeze({
     delete: vi.fn(),
     execute: vi.fn(),
@@ -91,7 +93,7 @@ function fakeModuleServices(): ModuleRuntimeServices {
   return Object.freeze({ database });
 }
 
-function expectDatabaseFakeUntouched(services: ModuleRuntimeServices): void {
+function expectDatabaseFakeUntouched(services: LegacyModuleRuntimeServices): void {
   expect(vi.mocked(services.database.select)).not.toHaveBeenCalled();
   expect(vi.mocked(services.database.selectDistinct)).not.toHaveBeenCalled();
   expect(vi.mocked(services.database.selectDistinctOn)).not.toHaveBeenCalled();
@@ -107,7 +109,7 @@ function buildModuleApp(options: {
   readonly registry: PermissionRegistry;
   readonly routes: readonly RegisteredModuleHttpRoute[];
   readonly runtime?: EkklesiaIdentityRuntime;
-  readonly services?: ModuleRuntimeServices;
+  readonly services?: LegacyModuleRuntimeServices | ModuleRuntimeServicesLookup;
   readonly trustedOrigins?: readonly string[];
 }) {
   const evaluator = options.evaluator ?? {
@@ -124,6 +126,7 @@ function buildModuleApp(options: {
     moduleLifecycle: emptyModuleLifecycle(),
     moduleConfiguration: emptyModuleConfiguration(),
     moduleStorage: emptyModuleStorage(),
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),
@@ -145,6 +148,36 @@ function permissionRegistry(
 }
 
 describe("module HTTP route mounting", () => {
+  it("selects the owning module's stable service entry for its handler", async () => {
+    const calendar = fakeModuleServices();
+    const people = fakeModuleServices();
+    const services: ModuleRuntimeServicesLookup = new Map([
+      ["calendar", calendar],
+      ["people", people],
+    ]);
+    let received: unknown;
+    const { app } = buildModuleApp({
+      registry: permissionRegistry([{ id: readPermission, baseline: "public" }]),
+      routes: [
+        moduleRoute({
+          handler: (_request, context) => {
+            received = context.services;
+            return Response.json({ ok: true });
+          },
+          method: "GET",
+          moduleId: "calendar",
+          path: "/services",
+          permission: readPermission,
+        }),
+      ],
+      services,
+    });
+
+    expect((await app.request("/api/v1/modules/calendar/services")).status).toBe(200);
+    expect(received).toBe(calendar);
+    expect(received).not.toBe(people);
+  });
+
   it('mounts a "/" route at exactly the module root, never with an added trailing slash', async () => {
     const handler = vi.fn<ModuleRouteHandler>(async () => new Response("root", { status: 200 }));
     const { app } = buildModuleApp({
@@ -508,7 +541,7 @@ describe("module route authorization", () => {
     expect(response.status).toBe(403);
     expect(await response.json()).toEqual({ code: "AUTHORIZATION_DENIED" });
     expect(handler).not.toHaveBeenCalled();
-    expectDatabaseFakeUntouched(services);
+    expectDatabaseFakeUntouched(services as LegacyModuleRuntimeServices);
   });
 
   it("does not invoke the handler when principal resolution fails", async () => {
@@ -637,7 +670,7 @@ describe("module route trusted-origin enforcement", () => {
     }
     expect(handler).not.toHaveBeenCalled();
     expect(evaluator.authorize).not.toHaveBeenCalled();
-    expectDatabaseFakeUntouched(services);
+    expectDatabaseFakeUntouched(services as LegacyModuleRuntimeServices);
   });
 
   it("allows a trusted-origin state-changing request through to the handler", async () => {
@@ -766,7 +799,7 @@ describe("module route CORS", () => {
 
     expect(handler).not.toHaveBeenCalled();
     expect(evaluator.authorize).not.toHaveBeenCalled();
-    expectDatabaseFakeUntouched(services);
+    expectDatabaseFakeUntouched(services as LegacyModuleRuntimeServices);
   });
 
   it("never reflects an untrusted origin for a module route", async () => {

apps/api/tests/module-lifecycle-routes.test.ts

@@ -5,8 +5,6 @@ import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
   type EkklesiaPrincipal,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -20,6 +18,8 @@ import {
   createModuleUiPublicationRegistry,
   type DiscoveredModule,
   discoverModules,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
   type ModuleLifecycleStore,
   ModuleLifecycleStoreError,
   EMPTY_MODULE_REALTIME_REGISTRY,
@@ -32,6 +32,7 @@ import { DASHBOARD_NAVIGATION_PATH } from "../src/dashboard-routes.js";
 import { CORE_MUTATION_MAX_BODY_BYTES } from "../src/body-limits.js";
 import { MODULE_LIFECYCLE_PATH } from "../src/module-lifecycle-routes.js";
 import { MODULE_UI_INVENTORY_PATH } from "../src/module-ui-inventory.js";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -79,7 +80,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         ...(fixture.dependencies ? { dependencies: fixture.dependencies } : {}),
         entrypoints: { server: "./dist/server/index.js", ui: "./dist/ui/index.js" },
         id: fixture.id,
-        manifestVersion: 7,
+        manifestVersion: 8,
         name: `${fixture.id} module`,
         version: "1.0.0",
       }),
@@ -172,6 +173,7 @@ async function install(options: InstallOptions = {}): Promise<Installation> {
       registry: composePlatformPermissionRegistry(modules),
       store: authorizationStore,
     },
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),
@@ -189,7 +191,7 @@ async function install(options: InstallOptions = {}): Promise<Installation> {
     moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
     moduleServices: Object.freeze({
       database: Object.freeze({}) as unknown as ModuleDatabase,
-    }) as ModuleRuntimeServices,
+    }) as LegacyModuleRuntimeServices,
     moduleUi: createModuleUiPublicationRegistry(eligibility.eligibleModules),
     runtime,
     trustedOrigins: [trustedOrigin],

apps/api/tests/module-realtime-live.test.ts

@@ -4,9 +4,7 @@ import path from "node:path";
 import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
-  type ModuleDatabase,
   type ModuleRealtimePublisher,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -18,6 +16,8 @@ import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
   composePlatformPermissionRegistry,
   discoverModules,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
   type ModuleRealtimeRegistry,
   type ModuleRealtimeSubscription,
   startDiscoveredModuleRuntime,
@@ -188,7 +188,7 @@ async function createFixtureModule(control: FixtureControl): Promise<{
         compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
         entrypoints: { server: "./dist/server/index.js" },
         id: "announcements",
-        manifestVersion: 7,
+        manifestVersion: 8,
         name: "Announcements fixture",
         permissions: [
           {
@@ -226,7 +226,7 @@ async function createFixtureModule(control: FixtureControl): Promise<{
   return { directory, symbol };
 }
 
-function services(): ModuleRuntimeServices {
+function services(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as ModuleDatabase });
 }
 

apps/api/tests/module-ui-host-e2e.test.ts

@@ -5,8 +5,6 @@ import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
   type EkklesiaPrincipal,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -18,6 +16,8 @@ import {
   composePlatformPermissionRegistry,
   createModuleUiPublicationRegistry,
   discoverModules,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
   startDiscoveredModuleRuntime,
 } from "@ekklesia/core/modules";
 import {
@@ -33,8 +33,10 @@ import {
   createModuleUiContext,
   type EkklesiaHostConfig,
   moduleUiSourceUrl,
+  saveHostAccountPreferences,
 } from "@ekklesia/shell";
 import { afterEach, describe, expect, it, vi } from "vitest";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -129,7 +131,7 @@ async function createFixtureModule(
           : {}),
       },
       id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name,
       permissions: [
         {
@@ -216,6 +218,8 @@ interface HarnessOptions {
    * single module proves very little. */
   readonly extraModules?: ReadonlyArray<{ readonly id: string; readonly name: string }>;
   readonly platformOwner?: boolean;
+  /** People with an account, for the account area's routes (ADR 0062). */
+  readonly people?: Parameters<typeof createInMemoryAccountStore>[0];
 }
 
 interface Harness {
@@ -241,7 +245,7 @@ async function startHarness(options: HarnessOptions = {}): Promise<Harness> {
     modulesDirectory,
     platformVersion: "0.1.0",
   });
-  const services: ModuleRuntimeServices = Object.freeze({
+  const services: LegacyModuleRuntimeServices = Object.freeze({
     database: Object.freeze({}) as unknown as ModuleDatabase,
   });
   // The module's real runtime: its server entrypoint is imported, registered, and started, and the
@@ -289,6 +293,7 @@ async function startHarness(options: HarnessOptions = {}): Promise<Harness> {
     },
     moduleConfiguration: moduleConfigurationOptionFor(modules),
     moduleStorage: moduleStorageOptionFor(modules),
+    account: createInMemoryAccountStore(options.people ?? []),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),
@@ -302,7 +307,10 @@ async function startHarness(options: HarnessOptions = {}): Promise<Harness> {
     if (url.pathname.startsWith("/api/v1/modules/")) {
       moduleApiCalls.push(`${init?.method ?? "GET"} ${url.pathname}${url.search}`);
     }
-    return app.request(url.href, init);
+    // A browser names the Dashboard's origin on every cross-origin request; the shell never sets it.
+    const headers = new Headers(init?.headers);
+    headers.set("Origin", "https://dashboard.example.test");
+    return app.request(url.href, { ...init, headers });
   }) as unknown as typeof fetch;
 
   return {
@@ -738,6 +746,39 @@ describe("end to end: a discovered module's UI mounts in the Ekklesia host", ()
     }
   });
 
+  it("loads the signed-in person's own account, and a saved preference is what the next load sees (ADR 0062)", async () => {
+    const harness = await startHarness({
+      people: [{ email: "[email protected]", name: "Viewer Person", userId: viewerId }],
+      principal: createAuthenticatedPrincipal(viewerId),
+    });
+    try {
+      const first = await bootstrapHost(harness.config);
+      expect(first.account).toEqual({
+        email: "[email protected]",
+        name: "Viewer Person",
+        preferences: { appearance: "system", motion: "system" },
+      });
+
+      expect(await saveHostAccountPreferences(harness.config, { appearance: "dark" })).toEqual({
+        appearance: "dark",
+        motion: "system",
+      });
+      expect(await saveHostAccountPreferences(harness.config, { motion: "reduce" })).toEqual({
+        appearance: "dark",
+        motion: "reduce",
+      });
+
+      // Another device signing in reads the account, not this one's browser.
+      const next = await bootstrapHost(harness.config);
+      expect(next.account !== "unavailable" && next.account.preferences).toEqual({
+        appearance: "dark",
+        motion: "reduce",
+      });
+    } finally {
+      await harness.stop();
+    }
+  });
+
   it("gives an anonymous visitor no inventory and therefore nothing to mount", async () => {
     const harness = await startHarness();
     try {

apps/api/tests/module-ui-inventory.test.ts

@@ -5,8 +5,6 @@ import {
   ANONYMOUS_PRINCIPAL,
   createAuthenticatedPrincipal,
   type EkklesiaPrincipal,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
   parseEkklesiaUserId,
 } from "@ekklesia/contracts";
 import {
@@ -21,9 +19,12 @@ import {
   type DiscoveredModule,
   discoverModules,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
 } from "@ekklesia/core/modules";
 import type { Hono } from "hono";
 import { afterEach, describe, expect, it, vi } from "vitest";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -99,7 +100,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         version: "1.0.0",
       })),
       id: fixture.id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${fixture.id} module`,
       permissions: (fixture.permissions ?? []).map((permission) => ({
         ...permission,
@@ -192,7 +193,7 @@ async function install(options: InstallOptions): Promise<Installation> {
     revokeGrant: vi.fn(),
     revokePlatformOwner: vi.fn(),
   } as unknown as AuthorizationStore;
-  const services: ModuleRuntimeServices = Object.freeze({
+  const services: LegacyModuleRuntimeServices = Object.freeze({
     database: Object.freeze({}) as unknown as ModuleDatabase,
   });
   const permissionRegistry = composePlatformPermissionRegistry(modules);
@@ -209,6 +210,7 @@ async function install(options: InstallOptions): Promise<Installation> {
     },
     moduleConfiguration: moduleConfigurationOptionFor(modules),
     moduleStorage: moduleStorageOptionFor(modules),
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),

apps/api/tests/module-ui-routes.test.ts

@@ -1,11 +1,7 @@
 import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import path from "node:path";
-import {
-  ANONYMOUS_PRINCIPAL,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
-} from "@ekklesia/contracts";
+import { ANONYMOUS_PRINCIPAL } from "@ekklesia/contracts";
 import type { AuthorizationEvaluator, AuthorizationStore } from "@ekklesia/core/authorization";
 import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
@@ -14,12 +10,15 @@ import {
   type DiscoveredModule,
   discoverModules,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
 } from "@ekklesia/core/modules";
 import { loadModuleUi } from "@ekklesia/module-ui-host";
 import { MODULE_UI_ABI_VERSION, NO_MODULE_UI_CONTRIBUTIONS } from "@ekklesia/module-ui-sdk";
 import { Window } from "happy-dom";
 import type { Hono } from "hono";
 import { afterEach, describe, expect, it, vi } from "vitest";
+import { createInMemoryAccountStore } from "./support/in-memory-account-store.js";
 import { createInMemoryDashboardStore } from "./support/in-memory-dashboard-store.js";
 import { testDashboardHostAssets } from "./support/dashboard-host-assets.js";
 import { readyHealth } from "./support/ready-health.js";
@@ -139,7 +138,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         version: "1.0.0",
       })),
       id: fixture.id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${fixture.id} module`,
       permissions:
         fixture.display === undefined
@@ -215,7 +214,7 @@ async function install(
       : modules.filter((module) => publicationModuleIds.includes(module.manifest.id));
 
   const database = Object.freeze({}) as unknown as ModuleDatabase;
-  const services: ModuleRuntimeServices = Object.freeze({ database });
+  const services: LegacyModuleRuntimeServices = Object.freeze({ database });
   const runtime: EkklesiaIdentityRuntime = {
     handleAuthRequest: vi.fn().mockResolvedValue(new Response(null, { status: 200 })),
     // Anonymous, and every authorization decision denied: whatever this route does, it does it
@@ -256,6 +255,7 @@ async function install(
     },
     moduleConfiguration: moduleConfigurationOptionFor(modules),
     moduleStorage: moduleStorageOptionFor(modules),
+    account: createInMemoryAccountStore(),
     dashboard: createInMemoryDashboardStore(),
     dashboardHostAssets: testDashboardHostAssets(),
     health: readyHealth(),

apps/api/tests/support/dashboard-host-assets.ts

@@ -9,5 +9,6 @@ export function testDashboardHostAssets(): DashboardHostAssets {
   return createDashboardHostAssets(
     '<!doctype html><div id="ekklesia-host"></div><script src="/assets/ekklesia-dashboard/app.js" type="module"></script>',
     "export const dashboardHost = true;\n",
+    "(() => {})();\n",
   );
 }

apps/api/tests/support/in-memory-account-store.ts

@@ -0,0 +1,85 @@
+import type { EkklesiaUserId } from "@ekklesia/contracts";
+import {
+  type AccountPreferences,
+  type AccountPreferencesUpdate,
+  type AccountStore,
+  AccountStoreError,
+  type AccountSummary,
+  DEFAULT_ACCOUNT_PREFERENCES,
+  parseAccountPreferencesUpdate,
+} from "@ekklesia/core/account";
+
+export interface InMemoryAccountPerson {
+  readonly userId: string;
+  readonly name: string;
+  readonly email: string;
+  readonly preferences?: Partial<AccountPreferences>;
+}
+
+export interface InMemoryAccountStore extends AccountStore {
+  /** Every user id a read or write was asked for, in order, so a route test can prove which account
+   * the route touched — the session's, and never one named by the request. */
+  readonly requestedUserIds: readonly string[];
+  /** Makes the next operations fail the way an unreachable database would. */
+  failWith(code: "ACCOUNT_READ_FAILED" | "ACCOUNT_WRITE_FAILED" | undefined): void;
+}
+
+/**
+ * An in-memory `AccountStore` for tests that exercise **routing and authorization**, not
+ * persistence. It reproduces the store's contract — strict update parsing, partial updates, an
+ * unknown person is not found — and nothing a database owns; persistence, the `CHECK`
+ * constraints, isolation across connections, and the cascade are proven against real PostgreSQL in
+ * `core/tests/account-store.integration.ts`.
+ */
+export function createInMemoryAccountStore(
+  people: readonly InMemoryAccountPerson[] = [],
+): InMemoryAccountStore {
+  const records = new Map<string, { name: string; email: string; preferences: AccountPreferences }>(
+    people.map((person) => [
+      person.userId,
+      {
+        email: person.email,
+        name: person.name,
+        preferences: { ...DEFAULT_ACCOUNT_PREFERENCES, ...person.preferences },
+      },
+    ]),
+  );
+  const requestedUserIds: string[] = [];
+  let failure: "ACCOUNT_READ_FAILED" | "ACCOUNT_WRITE_FAILED" | undefined;
+
+  return {
+    failWith(code) {
+      failure = code;
+    },
+    async readAccount(userId: EkklesiaUserId): Promise<AccountSummary | undefined> {
+      requestedUserIds.push(userId);
+      if (failure) {
+        throw new AccountStoreError("ACCOUNT_READ_FAILED");
+      }
+      const record = records.get(userId);
+      return record
+        ? { email: record.email, name: record.name, preferences: { ...record.preferences } }
+        : undefined;
+    },
+    requestedUserIds,
+    async updatePreferences(
+      userId: EkklesiaUserId,
+      update: AccountPreferencesUpdate,
+    ): Promise<AccountPreferences> {
+      requestedUserIds.push(userId);
+      const parsed = parseAccountPreferencesUpdate(update);
+      if (!parsed) {
+        throw new AccountStoreError("ACCOUNT_PREFERENCES_INVALID");
+      }
+      if (failure) {
+        throw new AccountStoreError("ACCOUNT_WRITE_FAILED");
+      }
+      const record = records.get(userId);
+      if (!record) {
+        throw new AccountStoreError("ACCOUNT_NOT_FOUND");
+      }
+      record.preferences = { ...record.preferences, ...parsed };
+      return { ...record.preferences };
+    },
+  };
+}

biome.json

@@ -19,7 +19,10 @@
   "linter": {
     "enabled": true,
     "rules": {
-      "preset": "recommended"
+      "preset": "recommended",
+      "suspicious": {
+        "noAlert": "error"
+      }
     }
   },
   "javascript": {

core/drizzle.config.ts

@@ -9,6 +9,7 @@ export default defineConfig({
     "./src/modules/lifecycle-schema.ts",
     "./src/modules/configuration-schema.ts",
     "./src/devices/schema.ts",
+    "./src/account/schema.ts",
   ],
   out: "./drizzle",
   migrations: {

core/drizzle/0008_user_preferences.sql

@@ -0,0 +1,11 @@
+CREATE TABLE "ekklesia_core_user_preference" (
+	"user_id" text PRIMARY KEY NOT NULL,
+	"appearance" text,
+	"motion" text,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"updated_at" timestamp with time zone DEFAULT now() NOT NULL,
+	CONSTRAINT "ekklesia_core_user_preference_appearance_check" CHECK ("ekklesia_core_user_preference"."appearance" is null or "ekklesia_core_user_preference"."appearance" in ('system', 'light', 'dark')),
+	CONSTRAINT "ekklesia_core_user_preference_motion_check" CHECK ("ekklesia_core_user_preference"."motion" is null or "ekklesia_core_user_preference"."motion" in ('system', 'reduce', 'allow'))
+);
+--> statement-breakpoint
+ALTER TABLE "ekklesia_core_user_preference" ADD CONSTRAINT "ekklesia_core_user_preference_user_id_ekklesia_core_user_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."ekklesia_core_user"("id") ON DELETE cascade ON UPDATE no action;

core/drizzle/meta/_ekklesia.json

@@ -49,6 +49,12 @@
       "destructive": {
         "mode": "none"
       }
+    },
+    {
+      "tag": "0008_user_preferences",
+      "destructive": {
+        "mode": "none"
+      }
     }
   ]
 }

core/drizzle/meta/_journal.json

@@ -57,6 +57,13 @@
       "when": 1787543773058,
       "tag": "0007_verified_bootstrap_owners",
       "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "7",
+      "when": 1792036365485,
+      "tag": "0008_user_preferences",
+      "breakpoints": true
     }
   ]
 }

core/package.json

@@ -1,6 +1,7 @@
 {
   "name": "@ekklesia/core",
-  "version": "0.1.2",
+  "version": "0.2.5",
+  "license": "AGPL-3.0-or-later",
   "private": true,
   "type": "module",
   "files": [
@@ -11,6 +12,10 @@
       "types": "./dist/index.d.ts",
       "import": "./dist/index.js"
     },
+    "./account": {
+      "types": "./dist/account/index.d.ts",
+      "import": "./dist/account/index.js"
+    },
     "./modules": {
       "types": "./dist/modules/index.d.ts",
       "import": "./dist/modules/index.js"

core/src/account/database.ts

@@ -0,0 +1,13 @@
+import { drizzle, type NodePgDatabase } from "drizzle-orm/node-postgres";
+import type { Pool } from "pg";
+import { accountSchema } from "./schema.js";
+
+export type AccountDrizzleDatabase = NodePgDatabase<typeof accountSchema>;
+
+/**
+ * A typed Drizzle view over an externally owned pool, exactly like `createDeviceDrizzleView`: it
+ * never constructs, registers an error listener on, or closes a pool.
+ */
+export function createAccountDrizzleView(pool: Pool): AccountDrizzleDatabase {
+  return drizzle(pool, { schema: accountSchema });
+}

core/src/account/index.ts

@@ -0,0 +1,4 @@
+export * from "./database.js";
+export * from "./preferences.js";
+export * from "./schema.js";
+export * from "./store.js";

core/src/account/preferences.ts

@@ -0,0 +1,108 @@
+/**
+ * A person's own preferences (DESIGN.md §9.2, ADR 0062): how the Dashboard looks and behaves *for
+ * them*, on every device they sign in on.
+ *
+ * The model is deliberately a closed, typed record rather than a key/value bag or a JSON document.
+ * Every preference has a fixed name, a closed set of values, and a default; a value outside the set
+ * is refused at this boundary and again by the database's `CHECK` constraint. A new preference is a
+ * new field here and a new nullable column in a migration — never a second table, and never a
+ * free-form value a client could fill with anything.
+ *
+ * Core cannot import the design-token package that renders these, so the value sets are declared
+ * here and an `apps/api` test holds them equal to `@ekklesia/design-tokens`' own
+ * (`EKKLESIA_APPEARANCES`, `EKKLESIA_MOTION_PREFERENCES`): one list cannot change without the other.
+ */
+
+/** Light, dark, or following the operating system. `system` is the default. */
+export const ACCOUNT_APPEARANCES = Object.freeze(["system", "light", "dark"] as const);
+export type AccountAppearance = (typeof ACCOUNT_APPEARANCES)[number];
+
+/** Following `prefers-reduced-motion`, always reducing, or always allowing the platform's subtle
+ * motion. `system` is the default. */
+export const ACCOUNT_MOTION_PREFERENCES = Object.freeze(["system", "reduce", "allow"] as const);
+export type AccountMotionPreference = (typeof ACCOUNT_MOTION_PREFERENCES)[number];
+
+export interface AccountPreferences {
+  readonly appearance: AccountAppearance;
+  readonly motion: AccountMotionPreference;
+}
+
+/** What a person who has never chosen anything gets: follow the system for both. */
+export const DEFAULT_ACCOUNT_PREFERENCES: AccountPreferences = Object.freeze({
+  appearance: "system",
+  motion: "system",
+});
+
+/** A change to some of a person's preferences. Fields left out keep their stored value, so
+ * changing motion on a phone never overwrites an appearance chosen a moment earlier on a laptop. */
+export type AccountPreferencesUpdate = Partial<AccountPreferences>;
+
+const PREFERENCE_VALUES: Readonly<Record<keyof AccountPreferences, readonly string[]>> =
+  Object.freeze({
+    appearance: ACCOUNT_APPEARANCES,
+    motion: ACCOUNT_MOTION_PREFERENCES,
+  });
+
+/** The preference names, in a stable order. */
+export const ACCOUNT_PREFERENCE_NAMES = Object.freeze(
+  Object.keys(PREFERENCE_VALUES).sort() as (keyof AccountPreferences)[],
+);
+
+export function isAccountAppearance(value: unknown): value is AccountAppearance {
+  return typeof value === "string" && ACCOUNT_APPEARANCES.includes(value as AccountAppearance);
+}
+
+export function isAccountMotionPreference(value: unknown): value is AccountMotionPreference {
+  return (
+    typeof value === "string" &&
+    ACCOUNT_MOTION_PREFERENCES.includes(value as AccountMotionPreference)
+  );
+}
+
+/**
+ * Reads an untrusted update strictly: a plain object naming at least one known preference, each
+ * with one of its allowed values, and nothing else. Returns `undefined` for anything else — an
+ * unknown key, a wrong value, an empty object, an array, `null` — so a malformed request is refused
+ * whole rather than partly applied, and no unexpected key can ever reach storage.
+ */
+export function parseAccountPreferencesUpdate(
+  value: unknown,
+): AccountPreferencesUpdate | undefined {
+  if (typeof value !== "object" || value === null || Array.isArray(value)) {
+    return undefined;
+  }
+  if (Object.getPrototypeOf(value) !== Object.prototype) {
+    return undefined;
+  }
+  const entries = Object.entries(value);
+  if (entries.length === 0) {
+    return undefined;
+  }
+  const update: { appearance?: AccountAppearance; motion?: AccountMotionPreference } = {};
+  for (const [key, entry] of entries) {
+    if (key === "appearance" && isAccountAppearance(entry)) {
+      update.appearance = entry;
+    } else if (key === "motion" && isAccountMotionPreference(entry)) {
+      update.motion = entry;
+    } else {
+      return undefined;
+    }
+  }
+  return Object.freeze(update);
+}
+
+/** Resolves stored columns, where `null` means "never chosen", to the preferences in effect. A
+ * stored value the database constraint should have made impossible is treated as never chosen. */
+export function resolveAccountPreferences(stored: {
+  readonly appearance: string | null;
+  readonly motion: string | null;
+}): AccountPreferences {
+  return Object.freeze({
+    appearance: isAccountAppearance(stored.appearance)
+      ? stored.appearance
+      : DEFAULT_ACCOUNT_PREFERENCES.appearance,
+    motion: isAccountMotionPreference(stored.motion)
+      ? stored.motion
+      : DEFAULT_ACCOUNT_PREFERENCES.motion,
+  });
+}

core/src/account/schema.ts

@@ -0,0 +1,56 @@
+import { sql } from "drizzle-orm";
+import { check, pgTable, text, timestamp } from "drizzle-orm/pg-core";
+import { ekklesiaCoreUser } from "../identity/schema.js";
+
+/**
+ * Core-owned storage for a person's own preferences (ADR 0062).
+ *
+ * **One row per person, one typed column per preference.** There is deliberately no key/value
+ * table and no JSON column: each preference has a fixed name and a closed set of values, enforced
+ * here by a `CHECK` constraint beneath the application-layer parser
+ * (`parseAccountPreferencesUpdate`), so nothing but a known value can be stored. A new preference is
+ * a new nullable column in a new migration.
+ *
+ * **`null` means "never chosen"**, and is resolved to the platform default when read
+ * (`resolveAccountPreferences`) rather than written as a column default. That keeps "this person
+ * chose System" distinguishable from "this person never chose", and lets a later preference column
+ * arrive without backfilling a value nobody chose — the same reasoning
+ * `ekklesia_core_module_state` follows for its absent rows (ADR 0028). A person with no row at all
+ * has chosen nothing.
+ *
+ * The row belongs to its person: `user_id` is the primary key and cascades on delete, so deleting
+ * an account removes its preferences with it, and no row can exist for a person who does not.
+ *
+ * Personal, not church-wide. Nothing here is branding, a church theme, or an administrator's
+ * decision for anyone else; those are Settings' (ADR 0061).
+ */
+export const ekklesiaCoreUserPreference = pgTable(
+  "ekklesia_core_user_preference",
+  {
+    userId: text("user_id")
+      .primaryKey()
+      .references(() => ekklesiaCoreUser.id, { onDelete: "cascade" }),
+    appearance: text("appearance"),
+    motion: text("motion"),
+    createdAt: timestamp("created_at", { withTimezone: true }).defaultNow().notNull(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).defaultNow().notNull(),
+  },
+  (table) => [
+    check(
+      "ekklesia_core_user_preference_appearance_check",
+      sql`${table.appearance} is null or ${table.appearance} in ('system', 'light', 'dark')`,
+    ),
+    check(
+      "ekklesia_core_user_preference_motion_check",
+      sql`${table.motion} is null or ${table.motion} in ('system', 'reduce', 'allow')`,
+    ),
+  ],
+);
+
+/** Explicit map passed to Drizzle, mirroring `dashboardSchema` and `moduleLifecycleSchema`. The
+ * user table is included because the account summary reads a person's own name and email from it;
+ * nothing in this domain writes to it. */
+export const accountSchema = {
+  user: ekklesiaCoreUser,
+  userPreference: ekklesiaCoreUserPreference,
+} as const;

core/src/account/store.ts

@@ -0,0 +1,156 @@
+import type { EkklesiaUserId } from "@ekklesia/contracts";
+import { eq, sql } from "drizzle-orm";
+import { ekklesiaCoreUser } from "../identity/schema.js";
+import type { AccountDrizzleDatabase } from "./database.js";
+import {
+  type AccountPreferences,
+  type AccountPreferencesUpdate,
+  parseAccountPreferencesUpdate,
+  resolveAccountPreferences,
+} from "./preferences.js";
+import { ekklesiaCoreUserPreference } from "./schema.js";
+
+export type AccountStoreErrorCode =
+  | "ACCOUNT_NOT_FOUND"
+  | "ACCOUNT_PREFERENCES_INVALID"
+  | "ACCOUNT_READ_FAILED"
+  | "ACCOUNT_WRITE_FAILED";
+
+const accountStoreMessages: Readonly<Record<AccountStoreErrorCode, string>> = Object.freeze({
+  ACCOUNT_NOT_FOUND: "The account was not found.",
+  ACCOUNT_PREFERENCES_INVALID: "The preferences are not valid.",
+  ACCOUNT_READ_FAILED: "The account could not be read.",
+  ACCOUNT_WRITE_FAILED: "The preferences could not be saved.",
+});
+
+/** Never carries the underlying database error, SQL text, host, or stack — matching
+ * `DashboardStoreError` exactly. */
+export class AccountStoreError extends Error {
+  readonly code: AccountStoreErrorCode;
+
+  constructor(code: AccountStoreErrorCode) {
+    super(accountStoreMessages[code]);
+    this.name = "AccountStoreError";
+    this.code = code;
+    this.stack = `${this.name}: ${this.message}`;
+    Object.freeze(this);
+  }
+}
+
+/**
+ * What a signed-in person is shown about their own account: the name and email they signed up
+ * with, and their preferences. Deliberately nothing else — not the image URL, not verification
+ * state, not timestamps — so the one place the browser learns about an account carries exactly
+ * what the account area displays (ADR 0062).
+ */
+export interface AccountSummary {
+  readonly name: string;
+  readonly email: string;
+  readonly preferences: AccountPreferences;
+}
+
+/**
+ * A person's own account, and only their own: every method takes the one user id whose account it
+ * reads or writes, and the HTTP surface supplies it from the authenticated session, never from the
+ * request. There is no method that lists accounts or reads someone else's by any other key.
+ */
+export interface AccountStore {
+  /** The person's summary, or `undefined` when no such person exists. A person who never chose a
+   * preference gets the defaults. */
+  readAccount(userId: EkklesiaUserId): Promise<AccountSummary | undefined>;
+  /** Changes the named preferences and keeps the rest, returning everything now in effect. */
+  updatePreferences(
+    userId: EkklesiaUserId,
+    update: AccountPreferencesUpdate,
+  ): Promise<AccountPreferences>;
+}
+
+function rethrowAsStoreError(error: unknown, code: AccountStoreErrorCode): never {
+  if (error instanceof AccountStoreError) {
+    throw error;
+  }
+  throw new AccountStoreError(code);
+}
+
+/**
+ * Core's persistence for a person's own account summary and preferences.
+ *
+ * Validation lives here as well as at the HTTP boundary, so the invariants hold for any caller: an
+ * update is re-read through the same strict parser, and a preference row can only be written for a
+ * person who exists.
+ */
+export function createAccountStore(db: AccountDrizzleDatabase): AccountStore {
+  return Object.freeze({
+    async readAccount(userId: EkklesiaUserId): Promise<AccountSummary | undefined> {
+      try {
+        const rows = await db
+          .select({
+            appearance: ekklesiaCoreUserPreference.appearance,
+            email: ekklesiaCoreUser.email,
+            motion: ekklesiaCoreUserPreference.motion,
+            name: ekklesiaCoreUser.name,
+          })
+          .from(ekklesiaCoreUser)
+          .leftJoin(
+            ekklesiaCoreUserPreference,
+            eq(ekklesiaCoreUserPreference.userId, ekklesiaCoreUser.id),
+          )
+          .where(eq(ekklesiaCoreUser.id, userId))
+          .limit(1);
+        const row = rows[0];
+        if (!row) {
+          return undefined;
+        }
+        return Object.freeze({
+          email: row.email,
+          name: row.name,
+          preferences: resolveAccountPreferences(row),
+        });
+      } catch (error) {
+        rethrowAsStoreError(error, "ACCOUNT_READ_FAILED");
+      }
+    },
+
+    async updatePreferences(
+      userId: EkklesiaUserId,
+      update: AccountPreferencesUpdate,
+    ): Promise<AccountPreferences> {
+      const parsed = parseAccountPreferencesUpdate(update);
+      if (parsed === undefined) {
+        throw new AccountStoreError("ACCOUNT_PREFERENCES_INVALID");
+      }
+      try {
+        return await db.transaction(async (tx) => {
+          // Checked inside the transaction rather than left to the foreign key, so a person who
+          // does not exist is a clear "not found" instead of a constraint failure.
+          const people = await tx
+            .select({ id: ekklesiaCoreUser.id })
+            .from(ekklesiaCoreUser)
+            .where(eq(ekklesiaCoreUser.id, userId))
+            .limit(1);
+          if (people.length === 0) {
+            throw new AccountStoreError("ACCOUNT_NOT_FOUND");
+          }
+          const rows = await tx
+            .insert(ekklesiaCoreUserPreference)
+            .values({ userId, ...parsed })
+            .onConflictDoUpdate({
+              set: { ...parsed, updatedAt: sql`now()` },
+              target: ekklesiaCoreUserPreference.userId,
+            })
+            .returning({
+              appearance: ekklesiaCoreUserPreference.appearance,
+              motion: ekklesiaCoreUserPreference.motion,
+            });
+          const row = rows[0];
+          if (!row) {
+            throw new AccountStoreError("ACCOUNT_WRITE_FAILED");
+          }
+          return resolveAccountPreferences(row);
+        });
+      } catch (error) {
+        rethrowAsStoreError(error, "ACCOUNT_WRITE_FAILED");
+      }
+    },
+  });
+}

core/src/authorization/permissions.ts

@@ -169,6 +169,20 @@ export const CORE_MODULES_CONFIGURATION_MANAGE: PermissionId = parsePermissionId
  */
 export const CORE_DEVICES_MANAGE: PermissionId = parsePermissionId("core.devices.manage");
 
+/**
+ * Authenticated: every signed-in person may read their own name and email and read and change their
+ * own preferences (ADR 0062). Choosing dark mode is not church administration, so it needs no
+ * grant, and a Dashboard where it did would be unusable for its ordinary users. It is a declared
+ * permission rather than a hand-written "is signed in" check, as `core.modules.ui.read` is
+ * (ADR 0026), so the account area is authorized by the same evaluator as everything else.
+ *
+ * **It is self-only by construction.** The routes it guards take the account from the
+ * authenticated session and accept no user id at all, so holding it — whether through the baseline
+ * or a grant — confers no ability to read or change anyone else's account. A device never satisfies
+ * the `authenticated` baseline: a screen in the foyer has no account to read.
+ */
+export const CORE_ACCOUNT_SELF_MANAGE: PermissionId = parsePermissionId("core.account.self.manage");
+
 /**
  * Core's own declarations, exported in deeply immutable form so a trusted composer (the module
  * integration layer, `core/src/modules/permissions.ts`) can build one combined registry from
@@ -207,6 +221,11 @@ export const CORE_PERMISSION_DECLARATIONS: readonly PermissionDeclaration[] = Ob
     description: "Approve display device pairing, list paired devices, and revoke a device.",
     id: CORE_DEVICES_MANAGE,
   }),
+  Object.freeze({
+    baseline: "authenticated" as const,
+    description: "Read your own account and read and change your own preferences.",
+    id: CORE_ACCOUNT_SELF_MANAGE,
+  }),
 ]);
 
 /**

core/src/cli/verify-module-package.ts

@@ -0,0 +1,188 @@
+import { readFile } from "node:fs/promises";
+import path from "node:path";
+import { pathToFileURL } from "node:url";
+import {
+  type ModulePackagePlatform,
+  ModulePackageVerificationError,
+  verifyModulePackage,
+} from "../modules/index.js";
+
+/**
+ * `verify-module-package` — verifies an Ekklesia Module Package v1 archive against this platform
+ * (ADR 0049), and never installs it.
+ *
+ *   node core/dist/cli/verify-module-package.js <archive>
+ *     [--sha256 <hex> | --sha256-file <file>]   the archive's expected SHA-256
+ *     [--extract-to <new directory>]            write the verified module directory there
+ *
+ * Run from the platform's root (`/opt/ekklesia` in the image), like every operator command: the
+ * platform's own versions are read from there. `--extract-to` writes only after every check passed,
+ * into a directory that must not exist yet; it is the staging step of an installation, not the
+ * installation itself.
+ */
+
+class VerifyArgumentsError extends Error {}
+
+const USAGE =
+  "Usage: verify-module-package <archive> [--sha256 <hex> | --sha256-file <file>] [--extract-to <new directory>]";
+export const MODULE_VERIFIER_SCRATCH_ENV = "EKKLESIA_MODULE_VERIFIER_SCRATCH_DIR";
+
+export interface VerifyModulePackageArguments {
+  readonly archivePath: string;
+  readonly expectedSha256?: string;
+  readonly sha256File?: string;
+  readonly extractTo?: string;
+}
+
+function normalizedDigest(value: string): string {
+  const digest = value.trim().toLowerCase();
+  if (!/^[0-9a-f]{64}$/u.test(digest)) {
+    throw new VerifyArgumentsError("The SHA-256 must be 64 hexadecimal characters.");
+  }
+  return digest;
+}
+
+export function parseVerifyModulePackageArguments(
+  argv: readonly string[],
+): VerifyModulePackageArguments {
+  const positional: string[] = [];
+  const options = new Map<string, string>();
+  for (let index = 0; index < argv.length; index += 1) {
+    const argument = argv[index] ?? "";
+    if (argument.startsWith("--")) {
+      if (!["--sha256", "--sha256-file", "--extract-to"].includes(argument)) {
+        throw new VerifyArgumentsError(USAGE);
+      }
+      const value = argv[index + 1];
+      if (value === undefined || value.startsWith("--") || options.has(argument)) {
+        throw new VerifyArgumentsError(USAGE);
+      }
+      options.set(argument, value);
+      index += 1;
+    } else {
+      positional.push(argument);
+    }
+  }
+  const archivePath = positional[0];
+  if (positional.length !== 1 || archivePath === undefined || archivePath === "") {
+    throw new VerifyArgumentsError(USAGE);
+  }
+  if (options.has("--sha256") && options.has("--sha256-file")) {
+    throw new VerifyArgumentsError(USAGE);
+  }
+  const sha256 = options.get("--sha256");
+  const sha256File = options.get("--sha256-file");
+  const extractTo = options.get("--extract-to");
+  return {
+    archivePath,
+    ...(sha256 === undefined ? {} : { expectedSha256: normalizedDigest(sha256) }),
+    ...(sha256File === undefined ? {} : { sha256File }),
+    ...(extractTo === undefined ? {} : { extractTo }),
+  };
+}
+
+/** The `sha256sum` format: one line, the digest, whitespace, and a file name that is never trusted. */
+export function parseSha256File(contents: string): string {
+  const lines = contents.split("\n").filter((line) => line.trim() !== "");
+  const match = lines.length === 1 ? /^([0-9a-fA-F]{64})\s+\*?\S/u.exec(lines[0] ?? "") : null;
+  if (!match?.[1]) {
+    throw new VerifyArgumentsError("The SHA-256 file must hold one sha256sum line.");
+  }
+  return match[1].toLowerCase();
+}
+
+/** The CLI's operator-facing bridge to Core's otherwise explicit verifier option. */
+export function moduleVerifierScratchDirectory(environment: NodeJS.ProcessEnv): string | undefined {
+  const configured = environment[MODULE_VERIFIER_SCRATCH_ENV];
+  if (configured === undefined) return undefined;
+  if (configured === "" || !path.isAbsolute(configured)) {
+    throw new VerifyArgumentsError(`${MODULE_VERIFIER_SCRATCH_ENV} must be an absolute path.`);
+  }
+  return configured;
+}
+
+async function readJson(file: string): Promise<Record<string, unknown>> {
+  return JSON.parse(await readFile(file, "utf8")) as Record<string, unknown>;
+}
+
+function requiredString(value: unknown): string {
+  if (typeof value !== "string" || value === "") {
+    throw new VerifyArgumentsError("The platform's own package metadata could not be read.");
+  }
+  return value;
+}
+
+/** What this platform is, read from where it is installed. The transitional database runtime is
+ * the Drizzle version Core itself depends on (ADR 0049). */
+export async function readModulePackagePlatform(
+  repositoryRoot: string,
+): Promise<ModulePackagePlatform> {
+  const [root, sdk, core] = await Promise.all([
+    readJson(path.join(repositoryRoot, "package.json")),
+    readJson(path.join(repositoryRoot, "packages", "module-sdk", "package.json")),
+    readJson(path.join(repositoryRoot, "core", "package.json")),
+  ]);
+  const dependencies = core.dependencies as Record<string, unknown> | undefined;
+  return {
+    databaseRuntime: { "drizzle-orm": requiredString(dependencies?.["drizzle-orm"]) },
+    moduleSdkVersion: requiredString(sdk.version),
+    platformVersion: requiredString(root.version),
+  };
+}
+
+async function main(): Promise<void> {
+  const parsed = parseVerifyModulePackageArguments(process.argv.slice(2));
+  const executionScratchDirectory = moduleVerifierScratchDirectory(process.env);
+  let expectedSha256 = parsed.expectedSha256;
+  if (parsed.sha256File !== undefined) {
+    let contents: string;
+    try {
+      contents = await readFile(parsed.sha256File, "utf8");
+    } catch {
+      throw new VerifyArgumentsError("The SHA-256 file could not be read.");
+    }
+    expectedSha256 = parseSha256File(contents);
+  }
+  const platform = await readModulePackagePlatform(process.cwd()).catch(() => {
+    throw new VerifyArgumentsError("The platform's own package metadata could not be read.");
+  });
+  const result = await verifyModulePackage({
+    archivePath: parsed.archivePath,
+    platform,
+    ...(executionScratchDirectory === undefined ? {} : { executionScratchDirectory }),
+    ...(expectedSha256 === undefined ? {} : { expectedSha256 }),
+    ...(parsed.extractTo === undefined ? {} : { extractTo: parsed.extractTo }),
+  });
+  console.log(
+    `Module package verified: ${result.moduleId}@${result.version} (target ${result.target}), ${result.fileCount} files, sha256 ${result.archiveSha256}.`,
+  );
+  if (expectedSha256 === undefined) {
+    console.log("The archive's SHA-256 was not checked: no expected digest was given.");
+  }
+  if (parsed.extractTo !== undefined) {
+    console.log("The verified module directory was extracted. Nothing was installed.");
+  }
+}
+
+function isDirectExecution(): boolean {
+  const entrypoint = process.argv[1];
+  return (
+    entrypoint !== undefined && import.meta.url === pathToFileURL(path.resolve(entrypoint)).href
+  );
+}
+
+if (isDirectExecution()) {
+  main().catch((error: unknown) => {
+    if (error instanceof ModulePackageVerificationError) {
+      console.error(`[${error.code}] ${error.message}`);
+      if (error.issueCodes.length > 0) {
+        console.error(`Module validation issues: ${error.issueCodes.join(", ")}`);
+      }
+    } else if (error instanceof VerifyArgumentsError) {
+      console.error(error.message);
+    } else {
+      console.error("Module package verification failed unexpectedly.");
+    }
+    process.exitCode = 1;
+  });
+}

core/src/devices/store.ts

@@ -44,17 +44,26 @@ export class DeviceStoreError extends Error {
 export const DEVICE_PAIRING_REQUEST_TTL_MS = 10 * 60_000;
 
 /**
- * How long a device credential is accepted before the device must pair again.
+ * How long a device credential may go **unused** before the device must pair again (ADR 0056).
  *
- * A display runs unattended for months; forcing a signage player to be re-paired every fortnight
- * because human sessions expire that fast would mean someone climbing to a ceiling-mounted screen
- * on a schedule. What makes a long horizon safe is that it is not the security boundary: the server
- * decides on every single request whether the device is still revoked, so an administrator's revoke
- * takes effect immediately regardless of how long the credential would otherwise have lived. The
- * expiry exists so an abandoned, forgotten screen eventually stops being an identity at all.
+ * The window slides: every request from the device moves `lastSeenAt` forward, and the host
+ * re-issues the cookie with a fresh lifetime, so a screen that is in use stays paired until an
+ * administrator revokes it. Revocation, not expiry, is the security boundary — the server checks it
+ * on every single request. The window exists only so an abandoned, forgotten screen eventually stops
+ * being an identity at all: 180 days after it was last seen, its credential is dead.
  */
 export const DEVICE_CREDENTIAL_TTL_MS = 180 * 24 * 60 * 60_000;
 
+/** When a device credential expires: the idle window, measured from the last time the device was
+ * seen, or from pairing if it never has been. */
+export function deviceCredentialExpiresAt(input: {
+  readonly createdAt: Date;
+  readonly lastSeenAt?: Date | null | undefined;
+}): Date {
+  const anchor = Math.max(input.createdAt.getTime(), input.lastSeenAt?.getTime() ?? 0);
+  return new Date(anchor + DEVICE_CREDENTIAL_TTL_MS);
+}
+
 /** How stale `lastSeenAt` may become before the resolver spends a write on it. A display polling
  * realtime and assets would otherwise turn an operational nicety into a continuous write load. */
 export const DEVICE_LAST_SEEN_THROTTLE_MS = 15 * 60_000;
@@ -475,7 +484,8 @@ export function createDeviceStore(db: DeviceDrizzleDatabase): DeviceStore {
         }
         // The credential's own horizon, measured from when the device was paired. Revocation is
         // checked above and is what makes a long horizon acceptable.
-        if (row.createdAt.getTime() + DEVICE_CREDENTIAL_TTL_MS <= now.getTime()) {
+        // Expiry is measured from last use, not from pairing, so a screen in use never ages out.
+        if (deviceCredentialExpiresAt(row).getTime() <= now.getTime()) {
           return undefined;
         }
         return Object.freeze({

core/src/modules/database-abi-values.ts

@@ -0,0 +1,349 @@
+import {
+  type ModuleDatabaseField,
+  ModuleDatabaseError,
+  type ModuleDatabaseValue,
+} from "@ekklesia/contracts";
+
+/**
+ * The value contract of Module Database ABI v1 (ADR 0050): how parameters are encoded before they
+ * reach PostgreSQL, and how result text is decoded after. Both are Core's, and neither consults
+ * `pg`'s process-global type registry or any ORM, which module code could change or differ from.
+ *
+ * Every value travels in PostgreSQL's text format. The session settings the decoding depends on
+ * (`DateStyle`, `IntervalStyle`, `TimeZone`, `bytea_output`, `extra_float_digits`) are pinned by the
+ * executor for every ABI operation (`./database-abi.ts`).
+ */
+
+/** PostgreSQL's limit on bound parameters in one statement (the protocol's 16-bit count). */
+export const MODULE_DATABASE_MAX_PARAMETERS = 65_535;
+/** PostgreSQL's limit on array dimensions (`MAXDIM`). */
+const maximumArrayDimensions = 6;
+
+function parameterInvalid(): ModuleDatabaseError {
+  return new ModuleDatabaseError("MODULE_DATABASE_PARAMETER_INVALID");
+}
+
+function isScalar(value: unknown): boolean {
+  return (
+    value === null ||
+    typeof value === "boolean" ||
+    typeof value === "number" ||
+    typeof value === "bigint" ||
+    typeof value === "string" ||
+    value instanceof Uint8Array
+  );
+}
+
+function scalarText(value: boolean | number | bigint | string): string {
+  // `String` spells NaN, Infinity, and -Infinity exactly as PostgreSQL's float and numeric input
+  // accepts them.
+  return typeof value === "string" ? value : String(value);
+}
+
+function byteaText(value: Uint8Array): string {
+  return `\\x${Buffer.from(value.buffer, value.byteOffset, value.byteLength).toString("hex")}`;
+}
+
+function quoteArrayElement(text: string): string {
+  return `"${text.replaceAll("\\", "\\\\").replaceAll('"', '\\"')}"`;
+}
+
+/**
+ * Validates one array level and returns its PostgreSQL array literal. Every element of a level is
+ * either a sub-array or a scalar, and sibling sub-arrays have equal lengths, because PostgreSQL
+ * arrays are rectangular. Every non-null element is quoted, which PostgreSQL accepts for any element
+ * type.
+ */
+function arrayLiteral(values: readonly unknown[], depth: number): string {
+  if (depth > maximumArrayDimensions) {
+    throw parameterInvalid();
+  }
+  const elements: string[] = [];
+  let nestedLength: number | undefined;
+  let nested: boolean | undefined;
+  for (let index = 0; index < values.length; index += 1) {
+    if (!Object.hasOwn(values, index)) {
+      throw parameterInvalid();
+    }
+    const element = values[index];
+    const isNested = Array.isArray(element);
+    if (nested === undefined) {
+      nested = isNested;
+    } else if (nested !== isNested) {
+      throw parameterInvalid();
+    }
+    if (isNested) {
+      if (nestedLength === undefined) {
+        nestedLength = element.length;
+      } else if (nestedLength !== element.length) {
+        throw parameterInvalid();
+      }
+      elements.push(arrayLiteral(element, depth + 1));
+    } else if (element === null) {
+      elements.push("NULL");
+    } else if (element instanceof Uint8Array) {
+      elements.push(quoteArrayElement(byteaText(element)));
+    } else if (isScalar(element)) {
+      elements.push(quoteArrayElement(scalarText(element as boolean | number | bigint | string)));
+    } else {
+      throw parameterInvalid();
+    }
+  }
+  return `{${elements.join(",")}}`;
+}
+
+/**
+ * Validates `values` against the ABI's parameter set and encodes each one into the only forms the
+ * driver then passes through unchanged: `null`, a string, or a `Buffer` copy of a `Uint8Array`.
+ * Anything else, including `undefined`, `Date`, plain objects, other class instances, functions,
+ * symbols, sparse or ragged arrays, and arrays deeper than PostgreSQL allows, is refused before
+ * anything reaches PostgreSQL. The error never names the value.
+ */
+export function encodeModuleDatabaseParameters(values: unknown): (string | Buffer | null)[] {
+  if (values === undefined) {
+    return [];
+  }
+  if (!Array.isArray(values) || values.length > MODULE_DATABASE_MAX_PARAMETERS) {
+    throw parameterInvalid();
+  }
+  const encoded: (string | Buffer | null)[] = [];
+  for (let index = 0; index < values.length; index += 1) {
+    if (!Object.hasOwn(values, index)) {
+      throw parameterInvalid();
+    }
+    const value: unknown = values[index];
+    if (value === null) {
+      encoded.push(null);
+    } else if (value instanceof Uint8Array) {
+      // A copy: the driver serializes when the statement is sent, which may be after the caller
+      // has changed its own bytes.
+      encoded.push(Buffer.from(value));
+    } else if (Array.isArray(value)) {
+      encoded.push(arrayLiteral(value, 1));
+    } else if (isScalar(value)) {
+      encoded.push(scalarText(value as boolean | number | bigint | string));
+    } else {
+      throw parameterInvalid();
+    }
+  }
+  return encoded;
+}
+
+// --- Results -----------------------------------------------------------------------------------
+
+type ScalarDecoder = (text: string) => ModuleDatabaseValue;
+
+const asText: ScalarDecoder = (text) => text;
+const asBoolean: ScalarDecoder = (text) => text === "t";
+const asInteger: ScalarDecoder = (text) => Number.parseInt(text, 10);
+// `Number` reads PostgreSQL's NaN, Infinity, -Infinity, and exponent forms. With
+// `extra_float_digits` pinned to 1 the text is the shortest form that round-trips exactly.
+const asFloat: ScalarDecoder = (text) => Number(text);
+
+function hexDigit(code: number): number {
+  if (code >= 48 && code <= 57) {
+    return code - 48;
+  }
+  if (code >= 97 && code <= 102) {
+    return code - 87;
+  }
+  if (code >= 65 && code <= 70) {
+    return code - 55;
+  }
+  return -1;
+}
+
+/**
+ * `bytea` text to bytes. The executor pins `bytea_output` to `hex`; the older `escape` form is read
+ * too, so a transaction that changed the setting still decodes faithfully rather than failing.
+ * Always a plain `Uint8Array`, never a `Buffer`.
+ */
+const asBytes: ScalarDecoder = (text) => {
+  if (text.startsWith("\\x")) {
+    const length = (text.length - 2) / 2;
+    const bytes = new Uint8Array(length);
+    for (let index = 0; index < length; index += 1) {
+      const high = hexDigit(text.charCodeAt(2 + index * 2));
+      const low = hexDigit(text.charCodeAt(3 + index * 2));
+      bytes[index] = high * 16 + low;
+    }
+    return bytes;
+  }
+  const bytes: number[] = [];
+  for (let index = 0; index < text.length; index += 1) {
+    const code = text.charCodeAt(index);
+    if (code === 92 && text.charCodeAt(index + 1) === 92) {
+      bytes.push(92);
+      index += 1;
+    } else if (code === 92) {
+      bytes.push(Number.parseInt(text.slice(index + 1, index + 4), 8));
+      index += 3;
+    } else {
+      bytes.push(code);
+    }
+  }
+  return Uint8Array.from(bytes);
+};
+
+/** Built-in scalar type OIDs with a decoding other than "PostgreSQL's text output, unchanged". Every
+ * type not listed here, `int8`, `numeric`, date and time types, `json`, and `jsonb` included,
+ * arrives as its exact text. */
+const scalarDecoders: ReadonlyMap<number, ScalarDecoder> = new Map([
+  [16, asBoolean], // bool
+  [17, asBytes], // bytea
+  [21, asInteger], // int2
+  [23, asInteger], // int4
+  [26, asInteger], // oid
+  [700, asFloat], // float4
+  [701, asFloat], // float8
+]);
+
+/** Built-in array type OIDs, each with its element type OID. An array of a type not listed here
+ * (an enum, a domain, an extension type) arrives as its text, like any other type. */
+const arrayElementTypes: ReadonlyMap<number, number> = new Map([
+  [1000, 16], // bool[]
+  [1001, 17], // bytea[]
+  [1002, 18], // "char"[]
+  [1003, 19], // name[]
+  [1005, 21], // int2[]
+  [1007, 23], // int4[]
+  [1009, 25], // text[]
+  [1014, 1042], // bpchar[]
+  [1015, 1043], // varchar[]
+  [1016, 20], // int8[]
+  [1021, 700], // float4[]
+  [1022, 701], // float8[]
+  [1028, 26], // oid[]
+  [1115, 1114], // timestamp[]
+  [1182, 1082], // date[]
+  [1183, 1083], // time[]
+  [1185, 1184], // timestamptz[]
+  [1187, 1186], // interval[]
+  [1231, 1700], // numeric[]
+  [1270, 1266], // timetz[]
+  [2951, 2950], // uuid[]
+  [199, 114], // json[]
+  [3807, 3802], // jsonb[]
+]);
+
+class ArrayTextError extends Error {}
+
+/**
+ * Parses PostgreSQL's array text output into nested arrays, each element decoded by `decode`.
+ * Unquoted `NULL` is null; a quoted `"NULL"` is the string. A non-default lower bound
+ * (`[0:1]={…}`) is not represented: a JavaScript array is a zero-based list. Every element type this
+ * decodes uses `,` as its delimiter.
+ */
+export function parsePostgresArrayText(text: string, decode: ScalarDecoder): ModuleDatabaseValue[] {
+  let position = 0;
+  if (text.startsWith("[")) {
+    const equals = text.indexOf("=");
+    if (equals === -1) {
+      throw new ArrayTextError();
+    }
+    position = equals + 1;
+  }
+
+  function parseArray(): ModuleDatabaseValue[] {
+    if (text[position] !== "{") {
+      throw new ArrayTextError();
+    }
+    position += 1;
+    const items: ModuleDatabaseValue[] = [];
+    if (text[position] === "}") {
+      position += 1;
+      return items;
+    }
+    for (;;) {
+      const character = text[position];
+      if (character === "{") {
+        items.push(parseArray());
+      } else if (character === '"') {
+        position += 1;
+        let element = "";
+        for (;;) {
+          const next = text[position];
+          if (next === undefined) {
+            throw new ArrayTextError();
+          }
+          if (next === "\\") {
+            element += text[position + 1] ?? "";
+            position += 2;
+          } else if (next === '"') {
+            position += 1;
+            break;
+          } else {
+            element += next;
+            position += 1;
+          }
+        }
+        items.push(decode(element));
+      } else {
+        const start = position;
+        while (position < text.length && text[position] !== "," && text[position] !== "}") {
+          position += 1;
+        }
+        const element = text.slice(start, position);
+        items.push(element.toUpperCase() === "NULL" ? null : decode(element));
+      }
+      if (text[position] === ",") {
+        position += 1;
+      } else if (text[position] === "}") {
+        position += 1;
+        return items;
+      } else {
+        throw new ArrayTextError();
+      }
+    }
+  }
+
+  const parsed = parseArray();
+  if (position !== text.length) {
+    throw new ArrayTextError();
+  }
+  return parsed;
+}
+
+function scalarDecoder(typeOid: number): ScalarDecoder {
+  return scalarDecoders.get(typeOid) ?? asText;
+}
+
+/** Decodes one non-null column value from its PostgreSQL text by the column's type OID. */
+export function decodeModuleDatabaseValue(typeOid: number, text: string): ModuleDatabaseValue {
+  const elementType = arrayElementTypes.get(typeOid);
+  if (elementType === undefined) {
+    return scalarDecoder(typeOid)(text);
+  }
+  try {
+    return parsePostgresArrayText(text, scalarDecoder(elementType));
+  } catch {
+    // PostgreSQL produced this text, so it cannot be malformed; should it ever be, the column still
+    // arrives faithfully, as text, rather than as a guess.
+    return text;
+  }
+}
+
+/**
+ * The `types` object handed to `pg` for every ABI statement. Its parser returns the raw text for
+ * every type, so the driver's global registry, which module code could change, is never consulted
+ * and the ABI decodes from text itself. It is an empty array as well because the driver also reads
+ * the same option as the Parse message's parameter-type list: empty, so PostgreSQL infers every
+ * parameter type from the statement.
+ */
+export const rawTextTypes: { getTypeParser: () => (text: string) => string } & never[] =
+  Object.freeze(
+    Object.assign([] as never[], {
+      getTypeParser: () => (text: string) => text,
+    }),
+  );
+
+/** Decodes one positional row of raw driver text. */
+export function decodeModuleDatabaseRow(
+  fields: readonly ModuleDatabaseField[],
+  raw: readonly unknown[],
+): ModuleDatabaseValue[] {
+  return fields.map((field, index) => {
+    const value = raw[index];
+    return typeof value === "string" ? decodeModuleDatabaseValue(field.typeOid, value) : null;
+  });
+}

core/src/modules/database-abi.ts

@@ -0,0 +1,596 @@
+import {
+  MODULE_DATABASE_ABI_VERSION,
+  type ModuleDatabaseArrayRow,
+  ModuleDatabaseError,
+  type ModuleDatabaseErrorCode,
+  type ModuleDatabaseExecutor,
+  type ModuleDatabaseField,
+  type ModuleDatabaseObjectRow,
+  type ModuleDatabaseQueryable,
+  type ModuleDatabaseQueryResult,
+  type ModuleDatabaseTransaction,
+  type ModuleId,
+  moduleIdSchema,
+} from "@ekklesia/contracts";
+import { DatabaseError, type Pool, type PoolClient, type QueryArrayConfig } from "pg";
+import {
+  decodeModuleDatabaseRow,
+  encodeModuleDatabaseParameters,
+  rawTextTypes,
+} from "./database-abi-values.js";
+
+/**
+ * Core's Module Database ABI v1 executor (ADR 0050).
+ *
+ * A module hands Core SQL text, ordered parameter values, and a row mode; Core hands back decoded
+ * rows, column metadata, and stable errors. No ORM, driver, pool, client, or connection object ever
+ * crosses in either direction. The executor is built over the one pool the API already owns
+ * (ADR 0016) and never closes it.
+ *
+ * This is a correctness and compatibility boundary, **not a security sandbox**: a trusted module can
+ * still send any SQL its database role permits. Nothing here inspects table names.
+ *
+ * ### Connections and session state
+ *
+ * Every ABI operation, a top-level statement or a whole transaction, borrows a connection from the
+ * pool, pins the session settings the ABI's decoding depends on, does its work, and resets the
+ * session with `DISCARD ALL` before returning the connection. So no setting, temporary table,
+ * listener, advisory lock, prepared statement, or role change a module makes survives the operation
+ * that made it, and nothing the ABI pinned reaches the pool's other users. A connection that cannot
+ * be reset cleanly, or that is not idle when the operation ends, is destroyed rather than returned.
+ * `DISCARD ALL` also deallocates named prepared statements; Core uses none on the shared pool.
+ *
+ * ### One statement per `query`
+ *
+ * Every ABI statement is sent with PostgreSQL's extended query protocol, forced with the driver's
+ * `queryMode: "extended"` even when there are no parameters. PostgreSQL itself refuses a Parse
+ * message holding more than one statement (SQLSTATE 42601), using its own SQL grammar, so comments,
+ * quoted literals, and semicolons inside them are never mistaken for a second statement. Core does
+ * not parse SQL. A statement text that holds no statement at all is refused after PostgreSQL reports
+ * it empty.
+ *
+ * ### Transaction control belongs to the callbacks
+ *
+ * Transaction-control SQL (`BEGIN`, `START TRANSACTION`, `COMMIT`, `ROLLBACK`, `SAVEPOINT`,
+ * `RELEASE SAVEPOINT`, `PREPARE TRANSACTION`, and their aliases) is forbidden through `query`: a
+ * conformance rule for trusted module code, not a security guarantee. Core cannot refuse such a
+ * statement beforehand without parsing SQL, which it does not do, and it cannot undo one PostgreSQL
+ * has already executed: a `COMMIT` sent through a transaction's `query` has committed by the time
+ * Core sees it. What Core does is detect the violation afterwards, from what PostgreSQL itself
+ * reports (the statement's command tag, and the protocol's transaction status), and fail safely:
+ * the call rejects, an enclosing transaction is never committed by Core and rejects too, and the
+ * connection is destroyed rather than returned to the pool. The commit and rollback guarantees of
+ * the transaction API apply to conforming use.
+ */
+
+/** The settings the ABI's decoding and determinism depend on, pinned for every ABI operation. */
+const pinSessionStatement =
+  "SET TimeZone TO 'UTC'; SET DateStyle TO 'ISO, MDY'; SET IntervalStyle TO 'postgres'; " +
+  "SET bytea_output TO 'hex'; SET extra_float_digits TO 1";
+const resetSessionStatement = "DISCARD ALL";
+
+const transactionControlCommands: ReadonlySet<string> = new Set([
+  "BEGIN",
+  "COMMIT",
+  "PREPARE",
+  "RELEASE",
+  "ROLLBACK",
+  "SAVEPOINT",
+  "START",
+]);
+
+const isolationStatements: ReadonlyMap<unknown, string> = new Map([
+  ["read committed", "READ COMMITTED"],
+  ["repeatable read", "REPEATABLE READ"],
+  ["serializable", "SERIALIZABLE"],
+]);
+
+/** `pg` 8.22 reports the protocol's ReadyForQuery transaction status through this method, which
+ * its type declarations omit. `acquire` refuses a client without it rather than guessing. */
+type AbiClient = PoolClient & { getTransactionStatus(): string | null };
+
+interface PreparedQuery {
+  readonly config: QueryArrayConfig;
+  readonly rowMode: "array" | "object";
+}
+
+interface RawResult {
+  readonly command: string | null;
+  readonly fields: readonly { readonly dataTypeID: number; readonly name: string }[];
+  readonly rowCount: number | null;
+  readonly rows: readonly unknown[][];
+}
+
+function databaseError(code: ModuleDatabaseErrorCode, cause?: unknown): ModuleDatabaseError {
+  // Only PostgreSQL's own SQLSTATE survives. The driver's message, detail, hint, position, and
+  // object names, and every non-PostgreSQL error, are dropped here.
+  if (cause instanceof DatabaseError && typeof cause.code === "string") {
+    return new ModuleDatabaseError(code, { sqlState: cause.code });
+  }
+  return new ModuleDatabaseError(code);
+}
+
+/** A PostgreSQL error leaves the connection usable; anything else (a dropped connection, a
+ * client-side timeout) may leave it mid-protocol, so it must be destroyed. */
+function connectionSurvives(error: unknown): boolean {
+  return error instanceof DatabaseError;
+}
+
+function prepareQuery(request: unknown): PreparedQuery {
+  if (typeof request !== "object" || request === null || Array.isArray(request)) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+  }
+  for (const key of Object.keys(request)) {
+    if (key !== "text" && key !== "values" && key !== "rowMode") {
+      throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+    }
+  }
+  const { rowMode, text, values } = request as Record<string, unknown>;
+  if (typeof text !== "string" || text.length === 0) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+  }
+  if (rowMode !== undefined && rowMode !== "object" && rowMode !== "array") {
+    throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+  }
+  const config = {
+    queryMode: "extended",
+    rowMode: "array",
+    text,
+    types: rawTextTypes,
+    values: encodeModuleDatabaseParameters(values),
+  };
+  return { config: config as unknown as QueryArrayConfig, rowMode: rowMode ?? "object" };
+}
+
+function beginStatement(options: unknown): string {
+  if (options === undefined) {
+    return "BEGIN ISOLATION LEVEL READ COMMITTED READ WRITE";
+  }
+  if (typeof options !== "object" || options === null || Array.isArray(options)) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_OPTION_INVALID");
+  }
+  for (const key of Object.keys(options)) {
+    if (key !== "isolation" && key !== "readOnly") {
+      throw new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_OPTION_INVALID");
+    }
+  }
+  const { isolation, readOnly } = options as Record<string, unknown>;
+  const level = isolation === undefined ? "READ COMMITTED" : isolationStatements.get(isolation);
+  if (level === undefined || (readOnly !== undefined && typeof readOnly !== "boolean")) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_OPTION_INVALID");
+  }
+  return `BEGIN ISOLATION LEVEL ${level} ${readOnly === true ? "READ ONLY" : "READ WRITE"}`;
+}
+
+function buildResult(
+  raw: RawResult,
+  rowMode: "array" | "object",
+): ModuleDatabaseQueryResult<ModuleDatabaseArrayRow | ModuleDatabaseObjectRow> {
+  if (typeof raw.command !== "string" || raw.command === "") {
+    // PostgreSQL answered with EmptyQueryResponse: the text held no statement.
+    throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+  }
+  const fields: readonly ModuleDatabaseField[] = Object.freeze(
+    raw.fields.map((field) => Object.freeze({ name: field.name, typeOid: field.dataTypeID })),
+  );
+  const decoded = raw.rows.map((row) => decodeModuleDatabaseRow(fields, row));
+  let rows: readonly (ModuleDatabaseArrayRow | ModuleDatabaseObjectRow)[];
+  if (rowMode === "array") {
+    rows = decoded;
+  } else {
+    if (new Set(fields.map((field) => field.name)).size !== fields.length) {
+      // Object rows cannot hold two columns with one name; refusing beats dropping one.
+      throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+    }
+    // `Object.fromEntries` defines properties, so a column named `__proto__` stays a column.
+    rows = decoded.map((row) =>
+      Object.fromEntries(fields.map((field, index) => [field.name, row[index] ?? null])),
+    );
+  }
+  return Object.freeze({
+    command: raw.command,
+    fields,
+    rowCount: raw.rowCount ?? null,
+    rows: Object.freeze(rows),
+  });
+}
+
+/** A borrowed client's `error` events are already reported through the statement they interrupt.
+ * The pool only listens to idle clients, so without this a connection the server terminates while
+ * borrowed would surface as an unhandled `error` event. */
+function ignoreClientError(): void {}
+
+function destroy(client: AbiClient): void {
+  client.removeListener("error", ignoreClientError);
+  client.release(true);
+}
+
+async function acquire(pool: Pool, failure: ModuleDatabaseErrorCode): Promise<AbiClient> {
+  let client: AbiClient;
+  try {
+    client = (await pool.connect()) as AbiClient;
+  } catch (error) {
+    throw databaseError(failure, error);
+  }
+  client.on("error", ignoreClientError);
+  if (typeof client.getTransactionStatus !== "function") {
+    destroy(client);
+    throw new ModuleDatabaseError(failure);
+  }
+  try {
+    await client.query(pinSessionStatement);
+  } catch (error) {
+    destroy(client);
+    throw databaseError(failure, error);
+  }
+  return client;
+}
+
+/** Returns a connection to the pool only when it is idle and resets cleanly; destroys it
+ * otherwise. Never throws. */
+async function relinquish(client: AbiClient, healthy: boolean): Promise<void> {
+  if (!healthy || client.getTransactionStatus() !== "I") {
+    destroy(client);
+    return;
+  }
+  try {
+    await client.query(resetSessionStatement);
+  } catch {
+    destroy(client);
+    return;
+  }
+  client.removeListener("error", ignoreClientError);
+  client.release();
+}
+
+/** One open scope: a transaction or a savepoint inside it. */
+interface Scope {
+  activeChild: Scope | undefined;
+  readonly children: Set<Scope>;
+  closed: boolean;
+  /** Operations started through this scope's executor that have not settled yet. */
+  pending: number;
+}
+
+interface TransactionState {
+  readonly client: AbiClient;
+  healthy: boolean;
+  /** Set when the transaction can no longer be committed: transaction control sent through
+   * `query`, or a savepoint that could not be undone. */
+  failure: ModuleDatabaseError | undefined;
+  finished: boolean;
+  /** Settled-never-rejecting shadows of every statement sent on the connection. */
+  readonly inflight: Set<Promise<void>>;
+  savepoints: number;
+}
+
+function newScope(parent?: Scope): Scope {
+  const scope: Scope = { activeChild: undefined, children: new Set(), closed: false, pending: 0 };
+  parent?.children.add(scope);
+  return scope;
+}
+
+function closeScope(scope: Scope): void {
+  scope.closed = true;
+  for (const child of scope.children) {
+    closeScope(child);
+  }
+}
+
+function assertActive(scope: Scope): void {
+  if (scope.closed) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_CLOSED");
+  }
+  if (scope.activeChild !== undefined) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_INACTIVE");
+  }
+}
+
+/** Once a transaction can no longer be committed, its scopes send nothing more. After a
+ * transaction-control violation in particular, a later statement would otherwise run outside any
+ * transaction, as its own autocommitted statement. */
+function assertUsable(state: TransactionState): void {
+  if (state.failure !== undefined) {
+    throw new ModuleDatabaseError(state.failure.code);
+  }
+}
+
+function track<T>(state: TransactionState, promise: Promise<T>): Promise<T> {
+  const shadow = promise.then(
+    () => undefined,
+    () => undefined,
+  );
+  state.inflight.add(shadow);
+  void shadow.then(() => state.inflight.delete(shadow));
+  return promise;
+}
+
+/** Waits until every statement already sent has settled, including any sent while waiting. */
+async function drain(state: TransactionState): Promise<void> {
+  while (state.inflight.size > 0) {
+    await Promise.all([...state.inflight]);
+  }
+}
+
+/** Runs one of Core's own transaction-control statements. Refuses, without sending anything, once
+ * the transaction has finished. */
+async function control(state: TransactionState, statement: string): Promise<void> {
+  if (state.finished) {
+    throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_CLOSED");
+  }
+  try {
+    await track(state, state.client.query(statement));
+  } catch (error) {
+    if (!connectionSurvives(error)) {
+      state.healthy = false;
+    }
+    throw databaseError("MODULE_DATABASE_TRANSACTION_FAILED", error);
+  }
+}
+
+async function rollback(state: TransactionState): Promise<void> {
+  try {
+    await state.client.query("ROLLBACK");
+  } catch {
+    state.healthy = false;
+  }
+}
+
+type Outcome<T> = { readonly value: T } | { readonly error: unknown };
+
+async function settle<T>(run: () => Promise<T> | T): Promise<Outcome<T>> {
+  try {
+    return { value: await run() };
+  } catch (error) {
+    return { error };
+  }
+}
+
+const moduleByExecutor = new WeakMap<object, ModuleId>();
+
+/** Which module an ABI executor, or a transaction or savepoint executor derived from it, belongs
+ * to. For Core's own logging, diagnostics, and attribution; never exposed to modules. */
+export function moduleDatabaseExecutorModuleId(executor: object): ModuleId | undefined {
+  return moduleByExecutor.get(executor);
+}
+
+export interface ModuleDatabaseExecutorOptions {
+  /** The module this executor serves. Carried for attribution only: the ABI enforces no table
+   * ownership at run time (ADR 0050). */
+  readonly moduleId: ModuleId;
+}
+
+/**
+ * Creates one module's ABI v1 executor over the API's existing pool. Synchronous and free of I/O:
+ * nothing touches the database until the module calls it. The returned object, and every
+ * transaction and savepoint executor it hands out, is frozen and holds exactly the ABI's members.
+ */
+export function createModuleDatabaseExecutor(
+  pool: Pool,
+  options: ModuleDatabaseExecutorOptions,
+): ModuleDatabaseExecutor {
+  const parsedModuleId = moduleIdSchema.safeParse(options.moduleId);
+  if (!parsedModuleId.success) {
+    throw new TypeError("A module database executor needs a valid module ID.");
+  }
+  const moduleId = parsedModuleId.data;
+
+  async function query(
+    request: unknown,
+  ): Promise<ModuleDatabaseQueryResult<ModuleDatabaseArrayRow | ModuleDatabaseObjectRow>> {
+    const prepared = prepareQuery(request);
+    const client = await acquire(pool, "MODULE_DATABASE_QUERY_FAILED");
+    let healthy = true;
+    try {
+      let raw: RawResult;
+      try {
+        raw = (await client.query(prepared.config)) as unknown as RawResult;
+      } catch (error) {
+        healthy = connectionSurvives(error);
+        throw databaseError("MODULE_DATABASE_QUERY_FAILED", error);
+      }
+      if (
+        (raw.command !== null && transactionControlCommands.has(raw.command)) ||
+        client.getTransactionStatus() !== "I"
+      ) {
+        // A transaction-control violation. PostgreSQL has already run it; the connection is
+        // destroyed below rather than returned in a state Core did not choose.
+        healthy = false;
+        throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+      }
+      return buildResult(raw, prepared.rowMode);
+    } finally {
+      await relinquish(client, healthy);
+    }
+  }
+
+  function scopeExecutor(state: TransactionState, scope: Scope): ModuleDatabaseTransaction {
+    async function scopeQuery(
+      request: unknown,
+    ): Promise<ModuleDatabaseQueryResult<ModuleDatabaseArrayRow | ModuleDatabaseObjectRow>> {
+      assertActive(scope);
+      assertUsable(state);
+      const prepared = prepareQuery(request);
+      scope.pending += 1;
+      try {
+        let raw: RawResult;
+        try {
+          raw = (await track(state, state.client.query(prepared.config))) as unknown as RawResult;
+        } catch (error) {
+          if (!connectionSurvives(error)) {
+            state.healthy = false;
+          }
+          throw databaseError("MODULE_DATABASE_QUERY_FAILED", error);
+        }
+        if (
+          (raw.command !== null && transactionControlCommands.has(raw.command)) ||
+          state.client.getTransactionStatus() === "I"
+        ) {
+          // A transaction-control violation. PostgreSQL has already run it, and Core cannot undo
+          // that; it can only never commit this transaction itself, and destroy the connection.
+          state.failure ??= new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+          state.healthy = false;
+          throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+        }
+        return buildResult(raw, prepared.rowMode);
+      } finally {
+        scope.pending -= 1;
+      }
+    }
+
+    async function savepoint<T>(
+      callback: (savepoint: ModuleDatabaseTransaction) => Promise<T> | T,
+    ): Promise<T> {
+      assertActive(scope);
+      assertUsable(state);
+      if (typeof callback !== "function") {
+        throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+      }
+      scope.pending += 1;
+      const child = newScope(scope);
+      scope.activeChild = child;
+      state.savepoints += 1;
+      // Core's own identifier: a fixed prefix and a counter, never anything a module supplied.
+      const name = `ekklesia_savepoint_${state.savepoints}`;
+      try {
+        await control(state, `SAVEPOINT ${name}`);
+        if (child.closed) {
+          throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_CLOSED");
+        }
+        const outcome = await settle(() => callback(scopeExecutor(state, child)));
+        const outstanding = child.pending > 0;
+        closeScope(child);
+        await drain(state);
+        if (scope.closed) {
+          // The enclosing transaction finished first; it rolls back, and nothing more is sent.
+          throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_CLOSED");
+        }
+        if ("error" in outcome) {
+          // A rejected callback's own error stays the error, even if sibling work it started was
+          // still settling: that work has been drained, and is undone here with everything else.
+          try {
+            await control(state, `ROLLBACK TO SAVEPOINT ${name}`);
+            await control(state, `RELEASE SAVEPOINT ${name}`);
+          } catch (error) {
+            state.failure ??= new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_FAILED");
+            throw error;
+          }
+          throw outcome.error;
+        }
+        if (outstanding) {
+          // A callback that resolved with work outstanding forgot an await. Roll back to the
+          // savepoint and never release it.
+          try {
+            await control(state, `ROLLBACK TO SAVEPOINT ${name}`);
+          } catch (error) {
+            state.failure ??= new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_FAILED");
+            throw error;
+          }
+          throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_WORK_OUTSTANDING");
+        }
+        try {
+          await control(state, `RELEASE SAVEPOINT ${name}`);
+        } catch (releaseError) {
+          // Typically a failed statement left the transaction aborted. Undo the savepoint so the
+          // transaction stays usable, and report that this savepoint did not complete.
+          try {
+            await control(state, `ROLLBACK TO SAVEPOINT ${name}`);
+            await control(state, `RELEASE SAVEPOINT ${name}`);
+          } catch {
+            state.failure ??= new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_FAILED");
+          }
+          throw releaseError;
+        }
+        return (outcome as { readonly value: T }).value;
+      } finally {
+        closeScope(child);
+        if (scope.activeChild === child) {
+          scope.activeChild = undefined;
+        }
+        scope.pending -= 1;
+      }
+    }
+
+    const executor = Object.freeze({
+      abiVersion: MODULE_DATABASE_ABI_VERSION,
+      query: scopeQuery as ModuleDatabaseQueryable["query"],
+      savepoint,
+    });
+    moduleByExecutor.set(executor, moduleId);
+    return executor;
+  }
+
+  async function transaction<T>(
+    callback: (transaction: ModuleDatabaseTransaction) => Promise<T> | T,
+    options?: unknown,
+  ): Promise<T> {
+    if (typeof callback !== "function") {
+      throw new ModuleDatabaseError("MODULE_DATABASE_REQUEST_INVALID");
+    }
+    const begin = beginStatement(options);
+    const client = await acquire(pool, "MODULE_DATABASE_TRANSACTION_FAILED");
+    const state: TransactionState = {
+      client,
+      failure: undefined,
+      finished: false,
+      healthy: true,
+      inflight: new Set(),
+      savepoints: 0,
+    };
+    try {
+      try {
+        await client.query(begin);
+      } catch (error) {
+        state.healthy = connectionSurvives(error);
+        throw databaseError("MODULE_DATABASE_TRANSACTION_FAILED", error);
+      }
+      const scope = newScope();
+      const outcome = await settle(() => callback(scopeExecutor(state, scope)));
+      const outstanding = scope.pending > 0;
+      closeScope(scope);
+      await drain(state);
+      state.finished = true;
+
+      if ("error" in outcome) {
+        // The callback's own error stays primary, even when sibling work it started (say, the
+        // other half of a `Promise.all`) was still settling. That work has been drained, and rolls
+        // back with the rest; outstanding work never leads to a commit.
+        await rollback(state);
+        throw outcome.error;
+      }
+      if (outstanding) {
+        // The callback resolved with work it never awaited: a forgotten `await`.
+        await rollback(state);
+        throw new ModuleDatabaseError("MODULE_DATABASE_SCOPE_WORK_OUTSTANDING");
+      }
+      if (state.failure !== undefined) {
+        await rollback(state);
+        throw state.failure;
+      }
+      let committed: { readonly command: string | null };
+      try {
+        committed = await client.query("COMMIT");
+      } catch (error) {
+        state.healthy = connectionSurvives(error);
+        throw databaseError("MODULE_DATABASE_TRANSACTION_FAILED", error);
+      }
+      if (committed.command !== "COMMIT") {
+        // PostgreSQL answers COMMIT with ROLLBACK when a failed statement had aborted the
+        // transaction. Nothing was committed, and PostgreSQL supplied no SQLSTATE to report.
+        throw new ModuleDatabaseError("MODULE_DATABASE_TRANSACTION_FAILED");
+      }
+      return outcome.value;
+    } finally {
+      state.finished = true;
+      await relinquish(client, state.healthy);
+    }
+  }
+
+  const executor = Object.freeze({
+    abiVersion: MODULE_DATABASE_ABI_VERSION,
+    query: query as ModuleDatabaseQueryable["query"],
+    transaction: transaction as ModuleDatabaseExecutor["transaction"],
+  });
+  moduleByExecutor.set(executor, moduleId);
+  return executor;
+}

core/src/modules/database.ts

@@ -1,7 +1,54 @@
-import type { ModuleDatabase } from "@ekklesia/contracts";
-import { drizzle } from "drizzle-orm/node-postgres";
+import type { ModuleDatabaseAbiRuntimeServices, ModuleRuntimeServices } from "@ekklesia/contracts";
+import { drizzle, type NodePgDatabase } from "drizzle-orm/node-postgres";
 import type { Pool } from "pg";
 
+/**
+ * A trusted backend module's typed Drizzle query surface — the same query-building methods a
+ * platform-owned Drizzle instance exposes, restricted to exactly the operations a module needs to
+ * read and write its own tables. Derived with `Pick` from the real `drizzle-orm/node-postgres`
+ * database type rather than hand-declared, so every method keeps Drizzle's own table-aware
+ * argument and result inference exactly as-is — a module calling `database.select().from(table)`
+ * or `database.insert(table).values(...)` gets the identical typed builder a direct Drizzle caller
+ * would, with no `any`/`unknown` erasure anywhere in the chain.
+ *
+ * Deliberately excludes everything `NodePgDatabase` or the `drizzle(...)` factory otherwise
+ * exposes: `$client` (the raw `pg` client/pool), `_` (internal session/dialect/schema state),
+ * `query` (a relational-query builder tied to one schema, which would have to span every
+ * installed module's tables to exist here at all), `$cache`, `$count`, `$with`, `with`, and
+ * `refreshMaterializedView`. There is no connection string, pool, session, or dialect object
+ * reachable through this type. Carries no schema generic — a module brings its own Drizzle table
+ * objects to each call, so there is no global relational schema spanning every installed module for
+ * this type to leak.
+ *
+ * Core's own, private type (ADR 0053): it moved here from `@ekklesia/contracts` so no published
+ * package references Drizzle. New modules use the Module Database ABI v1 instead (ADR 0050), and
+ * the Module SDK never exposes this facade's type.
+ *
+ * This is an integration boundary, not a security sandbox: modules are trusted, compiled backend
+ * plugins that already run arbitrary code in this process, exactly like every other lifecycle hook
+ * and HTTP handler they define. `ModuleDatabase` exists to keep a module's code Drizzle-typed and
+ * decoupled from how the platform physically connects to PostgreSQL — not to defend against a
+ * malicious module, which this facade cannot do and does not attempt to do.
+ */
+export type ModuleDatabase = Pick<
+  NodePgDatabase,
+  | "select"
+  | "selectDistinct"
+  | "selectDistinctOn"
+  | "insert"
+  | "update"
+  | "delete"
+  | "execute"
+  | "transaction"
+>;
+
+/** The services a legacy module's hooks and handlers receive: the legacy facade. */
+export type LegacyModuleRuntimeServices = ModuleRuntimeServices<ModuleDatabase>;
+/** The services Core hands any started module: the legacy facade or the ABI v1 executor. */
+export type AnyModuleRuntimeServices =
+  | LegacyModuleRuntimeServices
+  | ModuleDatabaseAbiRuntimeServices;
+
 /**
  * A typed `ModuleDatabase` view over an externally owned pool — the module-facing counterpart to
  * `createIdentityDrizzleView` (`core/src/identity/database.ts`) and

core/src/modules/discovery.ts

@@ -9,6 +9,7 @@ import {
   safeParseModuleManifest,
   semanticVersionSchema,
 } from "@ekklesia/contracts";
+import { isReservedModuleId } from "./reserved-ids.js";
 
 export const MODULE_MANIFEST_FILENAME = "ekklesia.module.json";
 
@@ -39,6 +40,7 @@ export type ModuleDiscoveryIssueCode =
   | "MODULE_ENTRYPOINT_INVALID"
   | "MODULE_ENTRYPOINT_MISSING"
   | "MODULE_ID_DUPLICATE"
+  | "MODULE_ID_RESERVED"
   | "MODULE_MANIFEST_INVALID"
   | "MODULE_MANIFEST_MISSING"
   | "MODULE_PACKAGE_INVALID"
@@ -614,6 +616,18 @@ async function scanModuleDirectory(
     });
   }
 
+  if (isReservedModuleId(manifest.id)) {
+    // A module's id is a stable URL identifier: its page is `/<module-id>` (ADR 0057) and its
+    // settings `/settings/<module-id>` (ADR 0061), beside the platform's own pages in both.
+    issues.push({
+      code: "MODULE_ID_RESERVED",
+      message: `Module ID ${manifest.id} is reserved for the platform's own pages and routes.`,
+      moduleDirectory: directoryName,
+      moduleId: manifest.id,
+      path: "id",
+    });
+  }
+
   const artifacts = await resolveEntrypoints(moduleDirectory, directoryName, manifest, issues);
   if (!artifacts) {
     return undefined;

core/src/modules/index.ts

@@ -2,14 +2,18 @@ export * from "./configuration.js";
 export * from "./configuration-schema.js";
 export * from "./configuration-store.js";
 export * from "./database.js";
+export * from "./database-abi.js";
 export * from "./discovery.js";
 export * from "./lifecycle.js";
 export * from "./lifecycle-schema.js";
 export * from "./lifecycle-store.js";
 export * from "./migration-discovery.js";
 export * from "./modules-directory.js";
+export * from "./module-package-host.js";
+export * from "./module-package-verification.js";
 export * from "./permissions.js";
 export * from "./realtime.js";
+export * from "./reserved-ids.js";
 export * from "./runtime.js";
 export * from "./schema-discovery.js";
 export * from "./ui-publication.js";

core/src/modules/legacy-schema-definition.ts

@@ -1,19 +1,15 @@
+/**
+ * The legacy module schema definition (ADR 0007): a v8 module that declares no `database` default-
+ * exports `{ moduleId, tables }` with its Drizzle table objects themselves. Core alone validates it,
+ * for the legacy facade's deprecation window (ADR 0050). It lives here, beside Core's own Drizzle
+ * dependency, so that no package a module installs needs Drizzle at run time (ADR 0053).
+ *
+ * Erasable TypeScript with no relative imports: the verifier's probe imports this source file
+ * directly in tests (`module-package-probe.ts`).
+ */
 import { is } from "drizzle-orm";
 import { type AnyPgTable, PgTable } from "drizzle-orm/pg-core";
-import { z } from "zod";
-import { type ModuleId, moduleIdSchema } from "./identifiers.js";
-
-export const POSTGRES_IDENTIFIER_MAX_LENGTH = 63;
-
-export const moduleTableLocalNameSchema = z
-  .string()
-  .min(1)
-  .regex(/^[a-z][a-z0-9]*(?:_[a-z0-9]+)*$/u, "Must be a lowercase snake-case table name.");
-
-export const physicalModuleTableNameSchema = moduleTableLocalNameSchema.max(
-  POSTGRES_IDENTIFIER_MAX_LENGTH,
-  `Must not exceed ${POSTGRES_IDENTIFIER_MAX_LENGTH} characters.`,
-);
+import { type ModuleId, moduleIdSchema } from "@ekklesia/contracts";
 
 export interface ModuleSchemaDefinition<
   Tables extends Readonly<Record<string, AnyPgTable>> = Readonly<Record<string, AnyPgTable>>,
@@ -35,23 +31,6 @@ function hasOnlyStringKeys(value: object, allowedKeys?: ReadonlySet<string>): bo
   );
 }
 
-export function moduleTableNamespace(moduleId: ModuleId): string {
-  return moduleIdSchema.parse(moduleId).replaceAll("-", "_");
-}
-
-export function moduleTablePrefix(moduleId: ModuleId): string {
-  return `${moduleTableNamespace(moduleId)}_`;
-}
-
-export function moduleTableName(moduleId: ModuleId, localName: string): string {
-  const parsedLocalName = moduleTableLocalNameSchema.parse(localName);
-  const tableName = `${moduleTablePrefix(moduleId)}${parsedLocalName}`;
-  if (!physicalModuleTableNameSchema.safeParse(tableName).success) {
-    throw new RangeError("The namespaced PostgreSQL table name is invalid or too long.");
-  }
-  return tableName;
-}
-
 export function isModuleSchemaDefinition(value: unknown): value is ModuleSchemaDefinition {
   try {
     if (

core/src/modules/module-package-archive.ts

@@ -0,0 +1,203 @@
+import { gunzipSync } from "node:zlib";
+
+/**
+ * Reads an Ekklesia Module Package v1 archive (ADR 0049) entirely in memory and enforces the
+ * archive-safety rules before anything is written anywhere.
+ *
+ * Deliberately a strict reader rather than a general tar implementation: v1 packages hold only
+ * POSIX ustar directories and regular files, so every other entry type is refused instead of
+ * interpreted. Nothing here touches the filesystem; extraction happens only after the caller has
+ * verified the whole package.
+ */
+
+export type ModulePackageArchiveErrorCode =
+  | "MODULE_PACKAGE_LAYOUT_INVALID"
+  | "MODULE_PACKAGE_LINK"
+  | "MODULE_PACKAGE_SPECIAL_ENTRY"
+  | "MODULE_PACKAGE_TOO_LARGE"
+  | "MODULE_PACKAGE_UNREADABLE"
+  | "MODULE_PACKAGE_UNSAFE_MODE"
+  | "MODULE_PACKAGE_UNSAFE_PATH";
+
+export class ModulePackageArchiveError extends Error {
+  readonly code: ModulePackageArchiveErrorCode;
+
+  constructor(code: ModulePackageArchiveErrorCode) {
+    super(code);
+    this.name = "ModulePackageArchiveError";
+    this.code = code;
+  }
+}
+
+/** Generous for a module, small enough that a hostile archive cannot exhaust the host. */
+export const MODULE_PACKAGE_MAX_COMPRESSED_BYTES = 256 * 1024 * 1024;
+export const MODULE_PACKAGE_MAX_UNCOMPRESSED_BYTES = 1024 * 1024 * 1024;
+export const MODULE_PACKAGE_MAX_ENTRIES = 100_000;
+
+export interface ModulePackageArchiveEntry {
+  /** Relative to the top-level module directory; empty for that directory itself. */
+  readonly path: string;
+  readonly type: "directory" | "file";
+  readonly data: Buffer;
+}
+
+export interface ModulePackageArchive {
+  /** The single top-level directory's name. Validated as a module id by the caller. */
+  readonly topLevel: string;
+  /** Every entry except the top-level directory itself, in archive order. */
+  readonly entries: readonly ModulePackageArchiveEntry[];
+}
+
+const BLOCK = 512;
+
+function field(block: Buffer, offset: number, length: number): string {
+  const raw = block.subarray(offset, offset + length);
+  const end = raw.indexOf(0);
+  return raw.subarray(0, end === -1 ? length : end).toString("latin1");
+}
+
+function octalField(block: Buffer, offset: number, length: number): number {
+  const text = field(block, offset, length).trim();
+  if (!/^[0-7]+$/u.test(text)) {
+    throw new ModulePackageArchiveError("MODULE_PACKAGE_UNREADABLE");
+  }
+  const value = Number.parseInt(text, 8);
+  if (!Number.isSafeInteger(value)) {
+    throw new ModulePackageArchiveError("MODULE_PACKAGE_UNREADABLE");
+  }
+  return value;
+}
+
+function headerChecksumValid(block: Buffer): boolean {
+  const declared = octalField(block, 148, 8);
+  let sum = 0;
+  for (let index = 0; index < BLOCK; index += 1) {
+    sum += index >= 148 && index < 156 ? 0x20 : (block[index] ?? 0);
+  }
+  return sum === declared;
+}
+
+/** Printable ASCII, no backslash, relative, and no empty, `.`, or `..` segment. */
+function safeSegments(value: string): readonly string[] {
+  if (
+    value.length === 0 ||
+    !/^[\x20-\x7e]+$/u.test(value) ||
+    value.includes("\\") ||
+    value.startsWith("/")
+  ) {
+    throw new ModulePackageArchiveError("MODULE_PACKAGE_UNSAFE_PATH");
+  }
+  const segments = value.split("/");
+  if (segments.some((segment) => segment === "" || segment === "." || segment === "..")) {
+    throw new ModulePackageArchiveError("MODULE_PACKAGE_UNSAFE_PATH");
+  }
+  return segments;
+}
+
+export function readModulePackageArchive(compressed: Buffer): ModulePackageArchive {
+  if (compressed.length > MODULE_PACKAGE_MAX_COMPRESSED_BYTES) {
+    throw new ModulePackageArchiveError("MODULE_PACKAGE_TOO_LARGE");
+  }
+  let raw: Buffer;
+  try {
+    raw = gunzipSync(compressed, { maxOutputLength: MODULE_PACKAGE_MAX_UNCOMPRESSED_BYTES });
+  } catch (error) {
+    throw new ModulePackageArchiveError(
+      error instanceof RangeError ? "MODULE_PACKAGE_TOO_LARGE" : "MODULE_PACKAGE_UNREADABLE",
+    );
+  }
+
+  const entries: ModulePackageArchiveEntry[] = [];
+  const kinds = new Map<string, "directory" | "file">();
+  /** Every path that is an ancestor of some entry, so a file can never claim one. */
+  const ancestors = new Set<string>();
+  let topLevel: string | undefined;
+  let offset = 0;
+  let ended = false;
+
+  while (offset + BLOCK <= raw.length) {
+    const block = raw.subarray(offset, offset + BLOCK);
+    if (block.every((byte) => byte === 0)) {
+      ended = true;
+      break;
+    }
+    if (field(block, 257, 6) !== "ustar" || field(block, 263, 2) !== "00") {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_UNREADABLE");
+    }
+    if (!headerChecksumValid(block)) {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_UNREADABLE");
+    }
+    if (entries.length + 1 > MODULE_PACKAGE_MAX_ENTRIES) {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_TOO_LARGE");
+    }
+
+    const typeflag = field(block, 156, 1);
+    if (typeflag === "1" || typeflag === "2") {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_LINK");
+    }
+    const type =
+      typeflag === "5" ? "directory" : typeflag === "0" || typeflag === "" ? "file" : undefined;
+    if (type === undefined) {
+      // Devices, FIFOs, contiguous files, and every extended or long-name header: v1 packages hold
+      // directories and regular files, so nothing else is interpreted.
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_SPECIAL_ENTRY");
+    }
+
+    const mode = octalField(block, 100, 8);
+    if ((mode & 0o7000) !== 0) {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_UNSAFE_MODE");
+    }
+
+    const name = field(block, 0, 100);
+    const prefix = field(block, 345, 155);
+    let fullPath = prefix === "" ? name : `${prefix}/${name}`;
+    if (type === "directory" && fullPath.endsWith("/")) {
+      fullPath = fullPath.slice(0, -1);
+    }
+    const segments = safeSegments(fullPath);
+    const top = segments[0] ?? "";
+    if (topLevel === undefined) {
+      topLevel = top;
+    } else if (top !== topLevel) {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_LAYOUT_INVALID");
+    }
+
+    const size = type === "file" ? octalField(block, 124, 12) : 0;
+    const dataStart = offset + BLOCK;
+    const dataEnd = dataStart + size;
+    if (dataEnd > raw.length) {
+      throw new ModulePackageArchiveError("MODULE_PACKAGE_UNREADABLE");
+    }
+    const relative = segments.slice(1).join("/");
+
+    if (relative === "") {
+      if (type !== "directory") {
+        throw new ModulePackageArchiveError("MODULE_PACKAGE_LAYOUT_INVALID");
+      }
+    } else {
+      if (kinds.has(relative)) {
+        throw new ModulePackageArchiveError("MODULE_PACKAGE_LAYOUT_INVALID");
+      }
+      // No entry may sit below a file, and no file may claim a path something already sits below.
+      // Linear in the total number of path segments, whatever order the entries arrive in.
+      if (type === "file" && ancestors.has(relative)) {
+        throw new ModulePackageArchiveError("MODULE_PACKAGE_LAYOUT_INVALID");
+      }
+      for (let index = 1; index < segments.length - 1; index += 1) {
+        const ancestor = segments.slice(1, index + 1).join("/");
+        if (kinds.get(ancestor) === "file") {
+          throw new ModulePackageArchiveError("MODULE_PACKAGE_LAYOUT_INVALID");
+        }
+        ancestors.add(ancestor);
+      }
+      kinds.set(relative, type);
+      entries.push({ data: Buffer.from(raw.subarray(dataStart, dataEnd)), path: relative, type });
+    }
+    offset = dataStart + Math.ceil(size / BLOCK) * BLOCK;
+  }
+
+  if (!ended || topLevel === undefined) {
+    throw new ModulePackageArchiveError("MODULE_PACKAGE_UNREADABLE");
+  }
+  return Object.freeze({ entries: Object.freeze(entries), topLevel });
+}

core/src/modules/module-package-host.ts

@@ -0,0 +1,59 @@
+/**
+ * The facts about this host that decide whether a native Module Package v1 can run on it
+ * (ADR 0049): operating system, CPU, C library family and version, and Node-API version.
+ *
+ * Everything comes from Node.js itself (`process.platform`, `process.arch`, `process.versions`, and
+ * the diagnostic report's `glibcVersionRuntime`), never from running a system command. A fact Node
+ * cannot report is left undefined, and every check that needs it fails closed.
+ */
+export interface ModulePackageHost {
+  readonly platform: string;
+  readonly arch: string;
+  /** The C library on Linux: glibc with its runtime version, or undefined when it cannot be proven
+   * to be glibc (musl reports none). */
+  readonly libc?: { readonly family: "glibc"; readonly version: string };
+  /** `process.versions.napi`: the highest Node-API version this Node.js provides. */
+  readonly nodeApi?: number;
+  /** `process.versions.modules`: the ABI an ABI-specific addon must have been built for. */
+  readonly nodeAbi?: string;
+}
+
+function glibcVersion(): string | undefined {
+  try {
+    const header = (process.report?.getReport() as { header?: { glibcVersionRuntime?: unknown } })
+      ?.header;
+    const version = header?.glibcVersionRuntime;
+    return typeof version === "string" && /^\d+\.\d+(?:\.\d+)?$/u.test(version)
+      ? version
+      : undefined;
+  } catch {
+    return undefined;
+  }
+}
+
+export function currentModulePackageHost(): ModulePackageHost {
+  const libc = process.platform === "linux" ? glibcVersion() : undefined;
+  const nodeApi = Number(process.versions.napi);
+  return Object.freeze({
+    arch: process.arch,
+    ...(libc === undefined
+      ? {}
+      : { libc: Object.freeze({ family: "glibc" as const, version: libc }) }),
+    ...(Number.isInteger(nodeApi) && nodeApi > 0 ? { nodeApi } : {}),
+    ...(typeof process.versions.modules === "string" ? { nodeAbi: process.versions.modules } : {}),
+    platform: process.platform,
+  });
+}
+
+/** The native targets this platform can verify, with what each requires of a host. */
+export const MODULE_PACKAGE_NATIVE_TARGETS: ReadonlyMap<
+  string,
+  {
+    readonly platform: string;
+    readonly arch: string;
+    readonly libc: "glibc";
+    readonly elfMachine: number;
+  }
+> = new Map([
+  ["linux-x64-glibc", { arch: "x64", elfMachine: 62, libc: "glibc", platform: "linux" }],
+]);

core/src/modules/module-package-probe.ts

@@ -0,0 +1,101 @@
+// The isolated, short-lived validation process of Module Package v1 verification (ADR 0049).
+//
+// The verifier forks this file with an empty environment and one JSON argument naming a candidate
+// module's backend entrypoints. It imports each one, so a package whose code cannot load, or whose
+// bundle still reaches for a dependency it does not contain, is refused before it is ever installed.
+// Whatever the module's top-level code does happens here, in a process with no database URL, no
+// secret, and no platform state, and that is discarded as soon as it reports.
+//
+// The result travels over the IPC channel, never stdout, so nothing a module prints can forge it.
+// It carries fixed role and reason names only: never an error message, a path, or module output.
+//
+// Written as erasable TypeScript, so Node can run the source file directly in tests as well as the
+// compiled file in the image. Its one relative import names the source file's own extension, which
+// the build rewrites to `.js` (`rewriteRelativeImportExtensions`); that file follows the same rules.
+import { pathToFileURL } from "node:url";
+import {
+  parseModuleRuntimeDefinition,
+  parseModuleSchemaMetadataDefinition,
+} from "@ekklesia/contracts";
+import { parseModuleSchemaDefinition } from "./legacy-schema-definition.ts";
+
+interface ProbeRequest {
+  readonly databaseAbi?: 1;
+  readonly moduleId: string;
+  readonly version: string;
+  readonly entrypoints: Readonly<Record<string, string>>;
+}
+
+interface ProbeFailure {
+  readonly role: string;
+  readonly reason: "contract" | "export" | "identity" | "load";
+}
+
+function defaultExport(namespace: unknown): unknown {
+  return typeof namespace === "object" && namespace !== null && "default" in namespace
+    ? (namespace as { default: unknown }).default
+    : undefined;
+}
+
+async function probe(request: ProbeRequest): Promise<readonly ProbeFailure[]> {
+  const failures: ProbeFailure[] = [];
+  for (const role of Object.keys(request.entrypoints).sort()) {
+    const entrypoint = request.entrypoints[role];
+    if (entrypoint === undefined) {
+      continue;
+    }
+    let namespace: unknown;
+    try {
+      namespace = await import(pathToFileURL(entrypoint).href);
+    } catch {
+      failures.push({ reason: "load", role });
+      continue;
+    }
+    try {
+      if (role === "server") {
+        const definition = parseModuleRuntimeDefinition(defaultExport(namespace));
+        if (definition.id !== request.moduleId || definition.version !== request.version) {
+          failures.push({ reason: "identity", role });
+        }
+        if ((definition.database?.abi === 1) !== (request.databaseAbi === 1)) {
+          failures.push({ reason: "contract", role });
+        }
+      } else if (role === "schema") {
+        const definition =
+          request.databaseAbi === 1
+            ? parseModuleSchemaMetadataDefinition(defaultExport(namespace))
+            : parseModuleSchemaDefinition(defaultExport(namespace));
+        if (definition.moduleId !== request.moduleId) {
+          failures.push({ reason: "identity", role });
+        }
+      }
+    } catch {
+      failures.push({ reason: "export", role });
+    }
+  }
+  return failures;
+}
+
+function report(message: unknown): void {
+  if (typeof process.send !== "function") {
+    process.exitCode = 2;
+    return;
+  }
+  process.send(message, () => {
+    // A module may leave timers or handles behind; the probe's work is done either way.
+    process.exit(0);
+  });
+}
+
+let request: ProbeRequest | undefined;
+try {
+  request = JSON.parse(process.argv[2] ?? "") as ProbeRequest;
+} catch {
+  report({ failures: [{ reason: "load", role: "request" }] });
+}
+if (request !== undefined) {
+  probe(request).then(
+    (failures) => report({ failures }),
+    () => report({ failures: [{ reason: "load", role: "probe" }] }),
+  );
+}

core/src/modules/module-package-verification.ts

@@ -0,0 +1,650 @@
+import { fork } from "node:child_process";
+import { createHash } from "node:crypto";
+import { chmod, mkdir, mkdtemp, readFile, realpath, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import {
+  isVersionCompatible,
+  type ModuleManifest,
+  safeParseModuleManifest,
+} from "@ekklesia/contracts";
+import {
+  MODULE_PACKAGE_ANY_TARGET,
+  MODULE_PACKAGE_FORMAT,
+  MODULE_PACKAGE_METADATA_FILENAME,
+  type ModulePackageMetadata,
+  safeParseModulePackageMetadata,
+  safeParseModulePackageRuntimePackage,
+} from "@ekklesia/contracts/module-package";
+import { discoverModules, MODULE_MANIFEST_FILENAME, ModuleDiscoveryError } from "./discovery.js";
+import {
+  currentModulePackageHost,
+  MODULE_PACKAGE_NATIVE_TARGETS,
+  type ModulePackageHost,
+} from "./module-package-host.js";
+import { discoverModuleMigrations, ModuleMigrationDiscoveryError } from "./migration-discovery.js";
+import {
+  type ModulePackageArchive,
+  ModulePackageArchiveError,
+  type ModulePackageArchiveErrorCode,
+  readModulePackageArchive,
+} from "./module-package-archive.js";
+import { discoverModuleSchemas, ModuleSchemaDiscoveryError } from "./schema-discovery.js";
+
+/**
+ * Verifies an Ekklesia Module Package v1 archive (ADR 0049) against the platform it runs on, without
+ * ever installing it.
+ *
+ * Order matters: everything that can be decided from bytes is decided before anything is written,
+ * and nothing is executed until the package has proven itself well-formed. The archive is read and
+ * checked for safety in memory; its metadata, every payload digest, and every identity statement
+ * are checked next; only then is it written to a fresh temporary directory, validated by the same
+ * discovery the platform uses, and its backend loaded once in a separate, short-lived process with
+ * an empty environment. A caller that asks for extraction gets the verified tree written to a new
+ * directory only after all of that succeeded.
+ *
+ * Errors carry a stable code and a fixed message. Paths, archive entry names, file contents, module
+ * output, and exception messages never appear in them: an archive is untrusted input, and none of
+ * it is ever echoed.
+ */
+
+export type ModulePackageVerificationErrorCode =
+  | ModulePackageArchiveErrorCode
+  | "MODULE_PACKAGE_DATABASE_RUNTIME_INCOMPATIBLE"
+  | "MODULE_PACKAGE_DATABASE_RUNTIME_UNEXPECTED"
+  | "MODULE_PACKAGE_DIGEST_MISMATCH"
+  | "MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED"
+  | "MODULE_PACKAGE_EXTRACTION_FAILED"
+  | "MODULE_PACKAGE_FILE_MISMATCH"
+  | "MODULE_PACKAGE_FILE_MISSING"
+  | "MODULE_PACKAGE_FILE_UNLISTED"
+  | "MODULE_PACKAGE_FORMAT_UNSUPPORTED"
+  | "MODULE_PACKAGE_IDENTITY_MISMATCH"
+  | "MODULE_PACKAGE_LIBC_INCOMPATIBLE"
+  | "MODULE_PACKAGE_MANIFEST_INVALID"
+  | "MODULE_PACKAGE_METADATA_INVALID"
+  | "MODULE_PACKAGE_METADATA_MISSING"
+  | "MODULE_PACKAGE_MODULE_INVALID"
+  | "MODULE_PACKAGE_NATIVE_FILE"
+  | "MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE"
+  | "MODULE_PACKAGE_NODE_API_INCOMPATIBLE"
+  | "MODULE_PACKAGE_RUNTIME_INCOMPATIBLE"
+  | "MODULE_PACKAGE_RUNTIME_PACKAGE_INVALID"
+  | "MODULE_PACKAGE_SDK_INCOMPATIBLE"
+  | "MODULE_PACKAGE_TARGET_INCOMPATIBLE"
+  | "MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED"
+  | "MODULE_PACKAGE_VERIFIER_SCRATCH_UNAVAILABLE";
+
+const messages: Readonly<Record<ModulePackageVerificationErrorCode, string>> = Object.freeze({
+  MODULE_PACKAGE_DATABASE_RUNTIME_INCOMPATIBLE:
+    "The package's bundled database runtime does not match this platform's (a transitional constraint).",
+  MODULE_PACKAGE_DATABASE_RUNTIME_UNEXPECTED:
+    "A Module Database ABI package must not carry a transitional database runtime.",
+  MODULE_PACKAGE_DIGEST_MISMATCH: "The archive does not match the SHA-256 it was given.",
+  MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED:
+    "A backend entrypoint could not be loaded from the package alone.",
+  MODULE_PACKAGE_EXTRACTION_FAILED:
+    "The verified package could not be extracted to a new directory.",
+  MODULE_PACKAGE_FILE_MISMATCH: "A payload file does not match its listed size or SHA-256.",
+  MODULE_PACKAGE_FILE_MISSING: "A file listed in the package metadata is missing from the archive.",
+  MODULE_PACKAGE_FILE_UNLISTED: "The archive contains a file the package metadata does not list.",
+  MODULE_PACKAGE_FORMAT_UNSUPPORTED: "The package format is not one this platform implements.",
+  MODULE_PACKAGE_IDENTITY_MISMATCH:
+    "The package metadata, runtime package.json, and manifest disagree about the module's identity.",
+  MODULE_PACKAGE_LAYOUT_INVALID:
+    "The archive must contain exactly one top-level module directory, with each path once.",
+  MODULE_PACKAGE_LIBC_INCOMPATIBLE:
+    "The package needs a newer C library than this host provides, or one it cannot establish.",
+  MODULE_PACKAGE_LINK: "The archive contains a link; module packages may contain none.",
+  MODULE_PACKAGE_MANIFEST_INVALID: "The package's module manifest is missing or invalid.",
+  MODULE_PACKAGE_METADATA_INVALID: "The package metadata is invalid.",
+  MODULE_PACKAGE_METADATA_MISSING: "The archive contains no package metadata.",
+  MODULE_PACKAGE_MODULE_INVALID: "The packaged module failed module validation.",
+  MODULE_PACKAGE_NATIVE_FILE:
+    "An any-target package contains a native file or a node_modules directory.",
+  MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE:
+    "A native file in the package is not built for the package's target.",
+  MODULE_PACKAGE_NODE_API_INCOMPATIBLE:
+    "The package's addons need a Node-API version or Node.js ABI this host does not provide.",
+  MODULE_PACKAGE_RUNTIME_INCOMPATIBLE:
+    "The package needs a Node.js version this host does not run.",
+  MODULE_PACKAGE_RUNTIME_PACKAGE_INVALID:
+    "The package's runtime package.json is not the generated runtime shape.",
+  MODULE_PACKAGE_SDK_INCOMPATIBLE:
+    "The Module SDK bundled into the package is outside the manifest's own moduleSdk range.",
+  MODULE_PACKAGE_SPECIAL_ENTRY:
+    "The archive contains an entry that is neither a directory nor a regular file.",
+  MODULE_PACKAGE_TARGET_INCOMPATIBLE: "The package's target is not one this platform can run.",
+  MODULE_PACKAGE_TOO_LARGE: "The archive exceeds the module package size limits.",
+  MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED:
+    "The package metadata contains transitional facts this platform does not understand.",
+  MODULE_PACKAGE_VERIFIER_SCRATCH_UNAVAILABLE:
+    "The verifier execution scratch directory is missing, not writable, or mounted noexec.",
+  MODULE_PACKAGE_UNREADABLE: "The file is not a readable gzip-compressed ustar archive.",
+  MODULE_PACKAGE_UNSAFE_MODE: "The archive contains a setuid, setgid, or sticky entry.",
+  MODULE_PACKAGE_UNSAFE_PATH: "The archive contains an absolute, escaping, or non-portable path.",
+});
+
+export class ModulePackageVerificationError extends Error {
+  readonly code: ModulePackageVerificationErrorCode;
+  /** Stable discovery issue codes, when module validation failed; never their messages. */
+  readonly issueCodes: readonly string[];
+
+  constructor(code: ModulePackageVerificationErrorCode, issueCodes: readonly string[] = []) {
+    super(messages[code]);
+    this.name = "ModulePackageVerificationError";
+    this.code = code;
+    this.issueCodes = Object.freeze([...new Set(issueCodes)].sort());
+    this.stack = `${this.name}: ${this.message}`;
+    Object.freeze(this);
+  }
+}
+
+/** What this platform is, for the checks that compare a package against it. */
+export interface ModulePackagePlatform {
+  readonly platformVersion: string;
+  readonly moduleSdkVersion: string;
+  /** The transitional database runtime facts this platform requires a package to agree with. */
+  readonly databaseRuntime: Readonly<Record<string, string>>;
+  /** Defaults to the running process's Node.js version. */
+  readonly nodeVersion?: string;
+  /** Defaults to this process's own host (`currentModulePackageHost`). */
+  readonly host?: ModulePackageHost;
+}
+
+export interface VerifyModulePackageOptions {
+  readonly archivePath: string;
+  /** When given, the archive's SHA-256 must equal it (lowercase hexadecimal). */
+  readonly expectedSha256?: string;
+  readonly platform: ModulePackagePlatform;
+  /** A directory that must not exist yet; the verified module directory is written there. */
+  readonly extractTo?: string;
+  /**
+   * Existing writable directory where backend candidates may execute. Defaults to `os.tmpdir()`.
+   * A hardened caller whose system temporary directory is `noexec` must provide a dedicated
+   * executable scratch mount; each verification creates and removes its own child directory.
+   */
+  readonly executionScratchDirectory?: string;
+  readonly loadTimeoutMs?: number;
+}
+
+export interface ModulePackageVerificationResult {
+  readonly archiveSha256: string;
+  /** Payload files, the metadata file not included. */
+  readonly fileCount: number;
+  readonly moduleId: string;
+  readonly target: string;
+  readonly version: string;
+}
+
+function fail(code: ModulePackageVerificationErrorCode, issueCodes?: readonly string[]): never {
+  throw new ModulePackageVerificationError(code, issueCodes);
+}
+
+function sha256(data: Uint8Array): string {
+  return createHash("sha256").update(data).digest("hex");
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function parseJson(data: Buffer | undefined): unknown {
+  if (data === undefined) {
+    return undefined;
+  }
+  try {
+    return JSON.parse(data.toString("utf8")) as unknown;
+  } catch {
+    return undefined;
+  }
+}
+
+/** The transitional facts this verifier understands, and nothing else (ADR 0049). */
+const UNDERSTOOD_TRANSITIONAL: Readonly<Record<string, readonly string[]>> = Object.freeze({
+  databaseRuntime: Object.freeze(["drizzle-orm"]),
+});
+
+function checkTransitional(raw: Record<string, unknown>): void {
+  const transitional = raw.transitional;
+  if (transitional === undefined) {
+    return;
+  }
+  if (!isRecord(transitional)) {
+    fail("MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED");
+  }
+  for (const [key, value] of Object.entries(transitional)) {
+    const understood = UNDERSTOOD_TRANSITIONAL[key];
+    if (!understood || !isRecord(value)) {
+      fail("MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED");
+    }
+    if (Object.keys(value).some((name) => !understood.includes(name))) {
+      fail("MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED");
+    }
+  }
+}
+
+function readMetadata(files: ReadonlyMap<string, Buffer>): ModulePackageMetadata {
+  const raw = parseJson(files.get(MODULE_PACKAGE_METADATA_FILENAME));
+  if (!files.has(MODULE_PACKAGE_METADATA_FILENAME)) {
+    fail("MODULE_PACKAGE_METADATA_MISSING");
+  }
+  if (!isRecord(raw)) {
+    fail("MODULE_PACKAGE_METADATA_INVALID");
+  }
+  if (raw.packageFormat !== MODULE_PACKAGE_FORMAT) {
+    fail("MODULE_PACKAGE_FORMAT_UNSUPPORTED");
+  }
+  checkTransitional(raw);
+  const parsed = safeParseModulePackageMetadata(raw);
+  if (!parsed.success) {
+    fail("MODULE_PACKAGE_METADATA_INVALID");
+  }
+  return parsed.data;
+}
+
+function checkPayload(metadata: ModulePackageMetadata, files: ReadonlyMap<string, Buffer>): void {
+  const listed = new Set(metadata.files.map((file) => file.path));
+  for (const filePath of files.keys()) {
+    if (filePath !== MODULE_PACKAGE_METADATA_FILENAME && !listed.has(filePath)) {
+      fail("MODULE_PACKAGE_FILE_UNLISTED");
+    }
+  }
+  for (const file of metadata.files) {
+    const data = files.get(file.path);
+    if (data === undefined) {
+      fail("MODULE_PACKAGE_FILE_MISSING");
+    }
+    if (data.length !== file.size || sha256(data) !== file.sha256) {
+      fail("MODULE_PACKAGE_FILE_MISMATCH");
+    }
+  }
+}
+
+function checkIdentity(
+  archive: ModulePackageArchive,
+  metadata: ModulePackageMetadata,
+  files: ReadonlyMap<string, Buffer>,
+): ModuleManifest {
+  const runtimePackage = safeParseModulePackageRuntimePackage(parseJson(files.get("package.json")));
+  if (!runtimePackage.success) {
+    fail("MODULE_PACKAGE_RUNTIME_PACKAGE_INVALID");
+  }
+  const manifest = safeParseModuleManifest(parseJson(files.get(MODULE_MANIFEST_FILENAME)));
+  if (!manifest.success) {
+    fail("MODULE_PACKAGE_MANIFEST_INVALID");
+  }
+  if (
+    archive.topLevel !== metadata.module.id ||
+    manifest.data.id !== metadata.module.id ||
+    manifest.data.version !== metadata.module.version ||
+    runtimePackage.data.version !== metadata.module.version
+  ) {
+    fail("MODULE_PACKAGE_IDENTITY_MISMATCH");
+  }
+  return manifest.data;
+}
+
+function checkCompatibility(
+  metadata: ModulePackageMetadata,
+  manifest: ModuleManifest,
+  files: ReadonlyMap<string, Buffer>,
+  platform: ModulePackagePlatform,
+): void {
+  if (metadata.target === MODULE_PACKAGE_ANY_TARGET) {
+    // An any-target package bundles everything: no addon, no ELF object, no node_modules.
+    for (const [filePath, data] of files) {
+      if (
+        filePath.toLowerCase().endsWith(".node") ||
+        filePath.startsWith("node_modules/") ||
+        isElf(data)
+      ) {
+        fail("MODULE_PACKAGE_NATIVE_FILE");
+      }
+    }
+  } else {
+    checkNativeTarget(metadata, files, platform.host ?? currentModulePackageHost());
+  }
+  if (!isVersionCompatible(platform.nodeVersion ?? process.versions.node, metadata.runtime.node)) {
+    fail("MODULE_PACKAGE_RUNTIME_INCOMPATIBLE");
+  }
+  const sdk = metadata.incorporates["@ekklesia/module-sdk"];
+  if (sdk !== undefined && !isVersionCompatible(sdk, manifest.compatibility.moduleSdk)) {
+    fail("MODULE_PACKAGE_SDK_INCOMPATIBLE");
+  }
+  if (manifest.database?.abi === 1) {
+    if (metadata.transitional?.databaseRuntime !== undefined) {
+      fail("MODULE_PACKAGE_DATABASE_RUNTIME_UNEXPECTED");
+    }
+    return;
+  }
+  // Transitional legacy-v8 path (ADR 0049): Core queries the module's Drizzle tables with its own
+  // Drizzle instance, so a recorded module runtime must match. ABI-v1 packages return above: their
+  // bundled ORM is a private implementation detail and is never compared with Core's.
+  for (const [runtime, version] of Object.entries(metadata.transitional?.databaseRuntime ?? {})) {
+    if (platform.databaseRuntime[runtime] !== version) {
+      fail("MODULE_PACKAGE_DATABASE_RUNTIME_INCOMPATIBLE");
+    }
+  }
+}
+
+function isElf(data: Uint8Array): boolean {
+  return (
+    data.length >= 4 && data[0] === 0x7f && data[1] === 0x45 && data[2] === 0x4c && data[3] === 0x46
+  );
+}
+
+/** `2.41` → `2.41.0`, for comparison against a semantic-version range. */
+function asSemver(version: string): string {
+  const parts = version.split(".");
+  return [...parts, "0", "0"].slice(0, 3).join(".");
+}
+
+/**
+ * A native target (ADR 0049): accepted only for a target this platform implements, on a host that
+ * provably matches it. Platform, CPU, C library family and minimum version, and the Node-API version
+ * or ABI the addons need are all checked; a fact the host cannot establish fails closed. Every ELF
+ * object in the package must be built for the target's machine, and every `.node` addon must be one.
+ */
+function checkNativeTarget(
+  metadata: ModulePackageMetadata,
+  files: ReadonlyMap<string, Buffer>,
+  host: ModulePackageHost,
+): void {
+  const target = MODULE_PACKAGE_NATIVE_TARGETS.get(metadata.target);
+  if (
+    target === undefined ||
+    host.platform !== target.platform ||
+    host.arch !== target.arch ||
+    host.libc?.family !== target.libc
+  ) {
+    fail("MODULE_PACKAGE_TARGET_INCOMPATIBLE");
+  }
+  const required = metadata.runtime.libcVersion;
+  if (
+    required === undefined ||
+    host.libc === undefined ||
+    !isVersionCompatible(asSemver(host.libc.version), required)
+  ) {
+    fail("MODULE_PACKAGE_LIBC_INCOMPATIBLE");
+  }
+  const { nodeAbi, nodeApi } = metadata.runtime;
+  if (
+    (nodeApi === undefined && nodeAbi === undefined) ||
+    (nodeApi !== undefined && (host.nodeApi === undefined || host.nodeApi < nodeApi)) ||
+    (nodeAbi !== undefined && host.nodeAbi !== nodeAbi)
+  ) {
+    fail("MODULE_PACKAGE_NODE_API_INCOMPATIBLE");
+  }
+  for (const [filePath, data] of files) {
+    const addon = filePath.toLowerCase().endsWith(".node");
+    if (!isElf(data)) {
+      if (addon) {
+        fail("MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE");
+      }
+      continue;
+    }
+    // ELF64, little-endian, for the target's machine (e_machine at offset 18).
+    if (
+      data.length < 20 ||
+      data[4] !== 2 ||
+      data[5] !== 1 ||
+      data.readUInt16LE(18) !== target.elfMachine
+    ) {
+      fail("MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE");
+    }
+  }
+}
+
+/** Writes the archive's directories (`0755`) and files (`0644`) under `root`, which must not exist.
+ * Safe by construction: every path was validated as relative and non-escaping, and only directories
+ * and regular files exist. Ownership is the writing process's, never the archive's. */
+async function writeTree(root: string, archive: ModulePackageArchive): Promise<void> {
+  await mkdir(root, { mode: 0o755 });
+  await chmod(root, 0o755);
+  for (const entry of archive.entries) {
+    const target = path.join(root, ...entry.path.split("/"));
+    if (entry.type === "directory") {
+      await mkdir(target, { mode: 0o755, recursive: true });
+      await chmod(target, 0o755);
+    } else {
+      await mkdir(path.dirname(target), { mode: 0o755, recursive: true });
+      await writeFile(target, entry.data, { flag: "wx", mode: 0o644 });
+      await chmod(target, 0o644);
+    }
+  }
+}
+
+function probeEntrypointPath(): string {
+  // The probe sits beside this file: compiled `.js` in an installation, source `.ts` under a test
+  // runner, which Node runs directly. Either way it is a separate process.
+  const self = fileURLToPath(import.meta.url);
+  return path.join(path.dirname(self), `module-package-probe${path.extname(self)}`);
+}
+
+function decodedMountPath(value: string): string {
+  return value.replace(/\\([0-7]{3})/gu, (_match, octal: string) =>
+    String.fromCharCode(Number.parseInt(octal, 8)),
+  );
+}
+
+/** Linux exposes the effective options of every mount, including a container's tmpfs mounts. A
+ * verifier cannot infer `noexec` from file permissions: native addons are mapped executable rather
+ * than invoked as files. On systems without mountinfo, the load remains the final authority. */
+async function isNoExecMount(directory: string): Promise<boolean> {
+  if (process.platform !== "linux") return false;
+  let mountinfo: string;
+  let canonicalDirectory: string;
+  try {
+    [mountinfo, canonicalDirectory] = await Promise.all([
+      readFile("/proc/self/mountinfo", "utf8"),
+      realpath(directory),
+    ]);
+  } catch {
+    return false;
+  }
+  const mounts = mountinfo
+    .split("\n")
+    .map((line) => line.split(" "))
+    .filter((fields) => fields.length > 6 && fields.includes("-"))
+    .map((fields) => ({
+      mountPoint: decodedMountPath(fields[4] ?? ""),
+      options: (fields[5] ?? "").split(","),
+    }))
+    .filter(
+      ({ mountPoint }) =>
+        canonicalDirectory === mountPoint ||
+        canonicalDirectory.startsWith(mountPoint === "/" ? "/" : `${mountPoint}/`),
+    )
+    .sort((left, right) => right.mountPoint.length - left.mountPoint.length);
+  return mounts[0]?.options.includes("noexec") ?? false;
+}
+
+async function createExecutionScratch(baseDirectory: string): Promise<string> {
+  if (!path.isAbsolute(baseDirectory)) {
+    fail("MODULE_PACKAGE_VERIFIER_SCRATCH_UNAVAILABLE");
+  }
+  try {
+    if (await isNoExecMount(baseDirectory)) {
+      fail("MODULE_PACKAGE_VERIFIER_SCRATCH_UNAVAILABLE");
+    }
+    return await mkdtemp(path.join(baseDirectory, "ekklesia-package-verify-"));
+  } catch (error) {
+    if (error instanceof ModulePackageVerificationError) throw error;
+    fail("MODULE_PACKAGE_VERIFIER_SCRATCH_UNAVAILABLE");
+  }
+}
+
+/** Loads every backend entrypoint in a short-lived child with an empty environment, and reports
+ * only whether each loaded and exported a definition naming this module. */
+async function loadEntrypoints(
+  manifest: Pick<ModuleManifest, "database" | "id" | "version">,
+  entrypoints: Readonly<Record<string, string>>,
+  timeoutMs: number,
+  executionDirectory: string,
+): Promise<void> {
+  const outcome = await new Promise<"ok" | "failed">((resolve) => {
+    let settled = false;
+    let child: ReturnType<typeof fork> | undefined;
+    let timer: ReturnType<typeof setTimeout> | undefined;
+    const finish = (value: "ok" | "failed"): void => {
+      if (!settled) {
+        settled = true;
+        clearTimeout(timer);
+        child?.kill("SIGKILL");
+        resolve(value);
+      }
+    };
+    try {
+      child = fork(
+        probeEntrypointPath(),
+        [
+          JSON.stringify({
+            ...(manifest.database?.abi === 1 ? { databaseAbi: 1 } : {}),
+            entrypoints,
+            moduleId: manifest.id,
+            version: manifest.version,
+          }),
+        ],
+        {
+          cwd: executionDirectory,
+          env: {},
+          execArgv: [],
+          serialization: "json",
+          stdio: ["ignore", "ignore", "ignore", "ipc"],
+        },
+      );
+    } catch {
+      finish("failed");
+      return;
+    }
+    timer = setTimeout(() => finish("failed"), timeoutMs);
+    child.on("message", (message: unknown) => {
+      const failures = isRecord(message) ? message.failures : undefined;
+      finish(Array.isArray(failures) && failures.length === 0 ? "ok" : "failed");
+    });
+    child.on("error", () => finish("failed"));
+    child.on("exit", () => finish("failed"));
+  });
+  if (outcome !== "ok") {
+    fail("MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED");
+  }
+}
+
+function discoveryIssueCodes(error: unknown): readonly string[] {
+  if (
+    error instanceof ModuleDiscoveryError ||
+    error instanceof ModuleMigrationDiscoveryError ||
+    error instanceof ModuleSchemaDiscoveryError
+  ) {
+    return error.issues.map((issue) => issue.code);
+  }
+  return [];
+}
+
+export async function verifyModulePackage(
+  options: VerifyModulePackageOptions,
+): Promise<ModulePackageVerificationResult> {
+  let compressed: Buffer;
+  try {
+    compressed = await readFile(options.archivePath);
+  } catch {
+    fail("MODULE_PACKAGE_UNREADABLE");
+  }
+  const archiveSha256 = sha256(compressed);
+  if (options.expectedSha256 !== undefined && options.expectedSha256 !== archiveSha256) {
+    fail("MODULE_PACKAGE_DIGEST_MISMATCH");
+  }
+
+  let archive: ModulePackageArchive;
+  try {
+    archive = readModulePackageArchive(compressed);
+  } catch (error) {
+    if (error instanceof ModulePackageArchiveError) {
+      fail(error.code);
+    }
+    fail("MODULE_PACKAGE_UNREADABLE");
+  }
+  const files = new Map(
+    archive.entries
+      .filter((entry) => entry.type === "file")
+      .map((entry) => [entry.path, entry.data] as const),
+  );
+
+  const metadata = readMetadata(files);
+  checkPayload(metadata, files);
+  const manifest = checkIdentity(archive, metadata, files);
+  checkCompatibility(metadata, manifest, files, options.platform);
+
+  const scratch = await createExecutionScratch(options.executionScratchDirectory ?? tmpdir());
+  try {
+    // The candidate alone, in a scratch inventory of its own: never module storage.
+    const modulesDirectory = path.join(scratch, "candidates");
+    await mkdir(modulesDirectory, { mode: 0o755 });
+    await writeTree(path.join(modulesDirectory, metadata.module.id), archive);
+
+    const discoveryOptions = {
+      moduleSdkVersion: options.platform.moduleSdkVersion,
+      modulesDirectory,
+      modulesDirectoryRequired: true,
+      platformVersion: options.platform.platformVersion,
+    } as const;
+    let entrypoints: Record<string, string>;
+    try {
+      // The same static validation the platform runs, against this package alone. A module that
+      // requires another module is validated with its dependencies when it is installed.
+      const [discovered] = await discoverModules(discoveryOptions);
+      if (discovered === undefined) {
+        fail("MODULE_PACKAGE_MODULE_INVALID");
+      }
+      await discoverModuleMigrations(discoveryOptions);
+      entrypoints = {
+        server: discovered.entrypoints.server,
+        ...(discovered.entrypoints.schema ? { schema: discovered.entrypoints.schema } : {}),
+        ...(discovered.entrypoints.jobs ? { jobs: discovered.entrypoints.jobs } : {}),
+      };
+    } catch (error) {
+      if (error instanceof ModulePackageVerificationError) {
+        throw error;
+      }
+      fail("MODULE_PACKAGE_MODULE_INVALID", discoveryIssueCodes(error));
+    }
+
+    // Executed only now, and first in isolation: a schema is imported in this process below only
+    // after the probe proved it loads on its own.
+    await loadEntrypoints(manifest, entrypoints, options.loadTimeoutMs ?? 30_000, scratch);
+    try {
+      await discoverModuleSchemas(discoveryOptions);
+    } catch (error) {
+      fail("MODULE_PACKAGE_MODULE_INVALID", discoveryIssueCodes(error));
+    }
+
+    if (options.extractTo !== undefined) {
+      const extractTo = options.extractTo;
+      let created = false;
+      try {
+        await mkdir(extractTo, { mode: 0o755 });
+        created = true;
+        await rm(extractTo, { recursive: true });
+        await writeTree(extractTo, archive);
+      } catch {
+        // Never leave a partial module directory behind; never remove one this call did not create.
+        if (created) {
+          await rm(extractTo, { force: true, recursive: true }).catch(() => undefined);
+        }
+        fail("MODULE_PACKAGE_EXTRACTION_FAILED");
+      }
+    }
+  } finally {
+    await rm(scratch, { force: true, recursive: true });
+  }
+
+  return Object.freeze({
+    archiveSha256,
+    fileCount: metadata.files.length,
+    moduleId: metadata.module.id,
+    target: metadata.target,
+    version: metadata.module.version,
+  });
+}

core/src/modules/reserved-ids.ts

@@ -0,0 +1,56 @@
+/**
+ * Names the platform owns, which therefore can never be a module id (ADR 0057, ADR 0061).
+ *
+ * A module id is a **stable URL identifier**. Every module with a Dashboard UI is addressed at
+ * `/<module-id>`, and every module with settings at `/settings/<module-id>`, beside the platform's
+ * own pages in the same two namespaces. A module called `settings` would collide with the
+ * Dashboard's Settings, and one called `discover` with Settings → Discover. This is the complete set
+ * the platform serves today, not a guess at what it might want later.
+ */
+
+/**
+ * Top-level namespaces (`/<name>`):
+ *
+ * - `api` — the API: identity, principal, health, Core resources, module routes, module UI artifacts,
+ *   display descriptors, and realtime (`/api/…`);
+ * - `assets` — the Dashboard's and display host's scripts (`/assets/…`);
+ * - `display` — the display host's pages and service worker (`/display/…`);
+ * - `settings` and `account` — the Dashboard's own Settings and account areas.
+ */
+export const RESERVED_TOP_LEVEL_NAMES = Object.freeze([
+  "account",
+  "api",
+  "assets",
+  "display",
+  "settings",
+] as const);
+
+/**
+ * The platform's own Settings sections (`/settings/<name>`): General, Branding, Displays, Discover
+ * (finding, installing, and managing modules), and System. Every other `/settings/<name>` is a
+ * module's settings. Discover's own pages live beneath it (`/settings/discover/…`), so they cannot
+ * collide with a module and need no reservation of their own.
+ */
+export const RESERVED_SETTINGS_NAMES = Object.freeze([
+  "branding",
+  "discover",
+  "displays",
+  "general",
+  "system",
+] as const);
+
+/**
+ * Every reserved name, sorted. `apps/api` holds this list to the routes it actually registers and to
+ * the pages and Settings sections the shell interprets, so a new platform route or Settings section
+ * cannot be added without reserving it here. Reserving a name is a breaking change for any
+ * installation with a module of that id, so the set grows only deliberately.
+ */
+export const RESERVED_MODULE_IDS = Object.freeze(
+  [...RESERVED_TOP_LEVEL_NAMES, ...RESERVED_SETTINGS_NAMES].sort(),
+);
+
+const reserved: ReadonlySet<string> = new Set(RESERVED_MODULE_IDS);
+
+export function isReservedModuleId(moduleId: string): boolean {
+  return reserved.has(moduleId);
+}

core/src/modules/runtime.ts

@@ -7,15 +7,16 @@ import {
   EMPTY_MODULE_CONFIGURATION,
   EMPTY_MODULE_STORAGE,
   type ModuleConfiguration,
+  type ModuleDatabaseExecutor,
   type ModuleHttpRouteRegistrar,
   type ModuleId,
   ModuleRealtimeError,
   type ModuleRealtimePublisher,
   type ModuleRegistrationContext,
   type ModuleRouteDefinitionInput,
+  type ModuleRouteHandler,
   type ModuleRuntimeContext,
   type ModuleRuntimeDefinition,
-  type ModuleRuntimeServices,
   type ModuleStorage,
   moduleRouteShapeKey,
   moduleRoutesOverlap,
@@ -24,6 +25,7 @@ import {
   type RegisteredModuleHttpRoute,
   safeParseModuleRouteDefinition,
 } from "@ekklesia/contracts";
+import type { AnyModuleRuntimeServices, ModuleDatabase } from "./database.js";
 import {
   type DiscoveredModule,
   discoverModules,
@@ -68,6 +70,7 @@ export type ModuleRuntimeIssueCode =
   | "MODULE_ROUTE_PERMISSION_INVALID"
   | "MODULE_ROUTE_PERMISSION_UNDECLARED"
   | "MODULE_RUNTIME_EXPORT_INVALID"
+  | "MODULE_RUNTIME_DATABASE_MISMATCH"
   | "MODULE_RUNTIME_ID_MISMATCH"
   | "MODULE_RUNTIME_IMPORT_FAILED"
   | "MODULE_RUNTIME_VERSION_MISMATCH"
@@ -105,9 +108,8 @@ export interface StartedModuleRuntime {
 /**
  * Per-module frozen configuration snapshots, keyed by module id (ADR 0029).
  *
- * A lookup rather than a field on `ModuleRuntimeServices`, because `services` is deliberately **one
- * shared object identity every module receives** — a property this runtime has a test for — while
- * configuration is per-module by definition. A module with no entry receives
+ * A lookup rather than a field on `ModuleRuntimeServices`, because configuration is resolved and
+ * frozen per module independently of its live service object. A module with no entry receives
  * `EMPTY_MODULE_CONFIGURATION` rather than `undefined`, so `context.config` is always present and
  * module code never branches on whether the platform supplied one.
  */
@@ -124,12 +126,33 @@ function configurationFor(
  * Per-module scoped object storage, keyed by module id (ADR 0030).
  *
  * A lookup for the same reason configuration is one, and emphatically **not** a field on
- * `ModuleRuntimeServices`: `services` is one shared object identity every module receives, while a
- * storage facade is scoped to exactly the buckets one module declared. Sharing it would hand every
+ * `ModuleRuntimeServices`: a storage facade is scoped to exactly the buckets one module declared.
+ * Sharing it would hand every
  * module every other module's storage.
  */
 export type ModuleStorageLookup = ReadonlyMap<string, ModuleStorage>;
 
+/** One frozen service object per module id. Legacy modules may point at objects wrapping the same
+ * facade; ABI-v1 modules each point at their own attributed executor. */
+export type ModuleRuntimeServicesLookup = ReadonlyMap<string, AnyModuleRuntimeServices>;
+export type ModuleRuntimeServicesSource = ModuleRuntimeServicesLookup | AnyModuleRuntimeServices;
+
+function servicesFor(
+  services: ModuleRuntimeServicesSource,
+  module: DiscoveredModule,
+): AnyModuleRuntimeServices {
+  const selected = "get" in services ? services.get(module.manifest.id) : services;
+  if (!selected) {
+    throw new TypeError(`Module ${module.manifest.id} has no runtime services.`);
+  }
+  const expectsAbi = module.manifest.database?.abi === 1;
+  const isAbi = "abiVersion" in selected.database && selected.database.abiVersion === 1;
+  if (expectsAbi !== isAbi) {
+    throw new TypeError(`Module ${module.manifest.id} has the wrong database service.`);
+  }
+  return selected;
+}
+
 function storageFor(storages: ModuleStorageLookup, moduleId: string): ModuleStorage {
   return storages.get(moduleId) ?? EMPTY_MODULE_STORAGE;
 }
@@ -164,10 +187,9 @@ export interface ModuleRuntimeCompositionOptions extends ModuleRuntimeTimeoutOpt
 export interface StartModuleRuntimeOptions
   extends ModuleDiscoveryOptions,
     ModuleRuntimeCompositionOptions {
-  /** The same frozen services object every started module's `start`/`stop` hooks and (once
-   * `apps/api` mounts routes) HTTP handlers receive for this runtime — a required production
-   * dependency, never an optional test-only global. See `ModuleRuntimeServices`. */
-  readonly services: ModuleRuntimeServices;
+  /** The manifest-selected service object for each module. One module's `start`/`stop` hooks and
+   * handlers receive its same entry; ABI-v1 entries carry distinct attributed executors. */
+  readonly services: ModuleRuntimeServicesSource;
 }
 
 interface LoadedModule {
@@ -175,6 +197,13 @@ interface LoadedModule {
   readonly discovered: DiscoveredModule;
 }
 
+type AnyRegistrationHook = (
+  context: ModuleRegistrationContext<ModuleDatabase | ModuleDatabaseExecutor>,
+) => unknown;
+type AnyRuntimeHook = (
+  context: ModuleRuntimeContext<ModuleDatabase | ModuleDatabaseExecutor>,
+) => unknown;
+
 interface CapabilityRegistrationStage {
   readonly capabilities: CapabilityRegistrar;
   commit(): readonly ModuleRuntimeIssue[];
@@ -316,11 +345,11 @@ class StagedCapabilityRegistry {
   createRuntimeContext(
     module: DiscoveredModule,
     phase: "rollback" | "start" | "stop",
-    services: ModuleRuntimeServices,
+    services: AnyModuleRuntimeServices,
     config: ModuleConfiguration,
     storage: ModuleStorage,
     realtime: ModuleRealtimePublisher,
-  ): ModuleRuntimeContext {
+  ): ModuleRuntimeContext<ModuleDatabase | ModuleDatabaseExecutor> {
     const capabilities: CapabilityResolver = Object.freeze({
       resolve: (capabilityId: CapabilityId): RegisteredCapability | undefined => {
         this.#assertAccess(module, capabilityId, phase);
@@ -469,7 +498,7 @@ class StagedModuleHttpRoutes {
         local.push(
           Object.freeze({
             bodyMode: parsed.data.bodyMode,
-            handler: parsed.data.handler,
+            handler: parsed.data.handler as ModuleRouteHandler,
             maxBodyBytes: parsed.data.maxBodyBytes,
             method: parsed.data.method,
             moduleId: module.manifest.id,
@@ -555,6 +584,19 @@ async function loadRuntimeDefinitions(
         ),
       );
     }
+    const runtimeDeclaresAbi = definition.database?.abi === 1;
+    const manifestDeclaresAbi = discovered.manifest.database?.abi === 1;
+    if (runtimeDeclaresAbi !== manifestDeclaresAbi) {
+      matchesManifest = false;
+      issues.push(
+        runtimeIssue(
+          "MODULE_RUNTIME_DATABASE_MISMATCH",
+          "load",
+          discovered.manifest.id,
+          `Module runtime database declaration does not match manifest ${discovered.manifest.id}.`,
+        ),
+      );
+    }
     if (matchesManifest) {
       loaded.push({ definition, discovered });
     }
@@ -580,15 +622,15 @@ async function registerModules(
       module.discovered.manifest.id,
       new Set(module.discovered.manifest.permissions.map((declaration) => declaration.id)),
     );
-    const context: ModuleRegistrationContext = Object.freeze({
+    const context = Object.freeze({
       capabilities: capabilityStage.capabilities,
       config: configurationFor(configurations, module.discovered.manifest.id),
       http: routeStage.http,
       moduleId: module.discovered.manifest.id,
       realtime: realtimeStage.realtime,
-    });
+    }) as ModuleRegistrationContext<ModuleDatabase | ModuleDatabaseExecutor>;
     try {
-      await module.definition.register?.(context);
+      await (module.definition.register as AnyRegistrationHook | undefined)?.(context);
     } catch (error) {
       if (error instanceof ModuleRuntimeSignal) {
         throw new ModuleRuntimeError([error.issue]);
@@ -685,7 +727,7 @@ async function stopModules(
   modules: readonly LoadedModule[],
   registry: StagedCapabilityRegistry,
   phase: "rollback" | "stop",
-  services: ModuleRuntimeServices,
+  services: ModuleRuntimeServicesSource,
   configurations: ModuleConfigurationLookup,
   storages: ModuleStorageLookup,
   realtimeRegistry: StagedModuleRealtimeRegistry,
@@ -698,7 +740,7 @@ async function stopModules(
     // A dependency may keep doing ordinary work while its dependents stop. Deactivate only the
     // module whose stop hook is about to run, not every publisher at the beginning of the sequence.
     realtimeRegistry.deactivateModule(moduleId);
-    const stop = module.definition.stop;
+    const stop = module.definition.stop as AnyRuntimeHook | undefined;
     if (!stop) {
       // No synthetic callback and no timer for a module that declares no stop hook.
       continue;
@@ -710,13 +752,13 @@ async function stopModules(
             registry.createRuntimeContext(
               module.discovered,
               phase,
-              services,
+              servicesFor(services, module.discovered),
               configurationFor(configurations, moduleId),
               storageFor(storages, moduleId),
               realtimeRegistry.publisherFor(moduleId),
-            ),
+            ) as ModuleRuntimeContext<ModuleDatabase | ModuleDatabaseExecutor>,
           ),
-        ),
+        ).then(() => undefined),
         timeoutMs,
       );
       if (outcome === "timed-out") {
@@ -750,7 +792,7 @@ async function stopModules(
 async function startModules(
   modules: readonly LoadedModule[],
   registry: StagedCapabilityRegistry,
-  services: ModuleRuntimeServices,
+  services: ModuleRuntimeServicesSource,
   configurations: ModuleConfigurationLookup,
   storages: ModuleStorageLookup,
   realtimeRegistry: StagedModuleRealtimeRegistry,
@@ -766,15 +808,15 @@ async function startModules(
   for (const module of modules) {
     rollbackCandidates.push(module);
     try {
-      await module.definition.start?.(
+      await (module.definition.start as AnyRuntimeHook | undefined)?.(
         registry.createRuntimeContext(
           module.discovered,
           "start",
-          services,
+          servicesFor(services, module.discovered),
           configurationFor(configurations, module.discovered.manifest.id),
           storageFor(storages, module.discovered.manifest.id),
           realtimeRegistry.publisherFor(module.discovered.manifest.id),
-        ),
+        ) as ModuleRuntimeContext<ModuleDatabase | ModuleDatabaseExecutor>,
       );
       const missingSnapshots = realtimeRegistry.missingSnapshots(module.discovered.manifest.id);
       if (missingSnapshots.length > 0) {
@@ -831,7 +873,7 @@ async function startModules(
  */
 export async function startDiscoveredModuleRuntime(
   discoveredModules: readonly DiscoveredModule[],
-  services: ModuleRuntimeServices,
+  services: ModuleRuntimeServicesSource,
   timeouts: ModuleRuntimeCompositionOptions = {},
 ): Promise<StartedModuleRuntime> {
   const modules = await loadRuntimeDefinitions(discoveredModules);

core/src/modules/schema-discovery.ts

@@ -1,12 +1,16 @@
 import { pathToFileURL } from "node:url";
 import {
   type ModuleId,
-  type ModuleSchemaDefinition,
+  type ModuleSchemaMetadataDefinition,
   moduleTableLocalNameSchema,
   moduleTablePrefix,
-  parseModuleSchemaDefinition,
+  parseModuleSchemaMetadataDefinition,
   physicalModuleTableNameSchema,
 } from "@ekklesia/contracts";
+import {
+  type ModuleSchemaDefinition,
+  parseModuleSchemaDefinition,
+} from "./legacy-schema-definition.js";
 import { is } from "drizzle-orm";
 import { type AnyPgTable, getTableConfig, PgColumn, PgTable } from "drizzle-orm/pg-core";
 import {
@@ -40,7 +44,9 @@ export interface DiscoveredModuleTable {
   readonly exportName: string;
   readonly moduleId: ModuleId;
   readonly name: string;
-  readonly table: AnyPgTable;
+  /** Present only for a temporary legacy-facade module. ABI-v1 schema discovery publishes no ORM
+   * object and contributes nothing to the legacy aggregate below. */
+  readonly table?: AnyPgTable;
 }
 
 export interface DiscoveredModuleSchema {
@@ -55,21 +61,40 @@ export interface ModuleSchemaAggregate {
   readonly tables: readonly DiscoveredModuleTable[];
 }
 
-interface LoadedModuleSchema {
+interface LoadedLegacyModuleSchema {
   readonly definition: ModuleSchemaDefinition;
   readonly discovered: DiscoveredModule;
+  readonly mode: "legacy";
 }
 
+interface LoadedAbiModuleSchema {
+  readonly definition: ModuleSchemaMetadataDefinition;
+  readonly discovered: DiscoveredModule;
+  readonly mode: "abi-v1";
+}
+
+type LoadedModuleSchema = LoadedLegacyModuleSchema | LoadedAbiModuleSchema;
+
 interface InspectedModuleSchema {
   readonly discovered: DiscoveredModule;
   readonly tables: ModuleTableCandidate[];
 }
 
-interface ModuleTableCandidate extends DiscoveredModuleTable {
+interface LegacyModuleTableCandidate extends DiscoveredModuleTable {
+  readonly mode: "legacy";
   readonly foreignKeys: ReturnType<typeof getTableConfig>["foreignKeys"];
   readonly path: string;
+  readonly table: AnyPgTable;
 }
 
+interface AbiModuleTableCandidate extends DiscoveredModuleTable {
+  readonly mode: "abi-v1";
+  readonly foreignKeys: ModuleSchemaMetadataDefinition["tables"][number]["foreignKeys"];
+  readonly path: string;
+}
+
+type ModuleTableCandidate = LegacyModuleTableCandidate | AbiModuleTableCandidate;
+
 const drizzleTableIsAlias = Symbol.for("drizzle:IsAlias");
 
 export class ModuleSchemaDiscoveryError extends Error {
@@ -156,9 +181,13 @@ async function loadSchemaDefinitions(discoveredModules: readonly DiscoveredModul
       continue;
     }
 
-    let definition: ModuleSchemaDefinition;
+    let definition: ModuleSchemaDefinition | ModuleSchemaMetadataDefinition;
+    const mode = discovered.manifest.database?.abi === 1 ? "abi-v1" : "legacy";
     try {
-      definition = parseModuleSchemaDefinition(defaultExport(moduleNamespace));
+      definition =
+        mode === "abi-v1"
+          ? parseModuleSchemaMetadataDefinition(defaultExport(moduleNamespace))
+          : parseModuleSchemaDefinition(defaultExport(moduleNamespace));
     } catch {
       issues.push(
         issue(
@@ -182,7 +211,11 @@ async function loadSchemaDefinitions(discoveredModules: readonly DiscoveredModul
       continue;
     }
 
-    loaded.push({ definition, discovered });
+    loaded.push(
+      mode === "abi-v1"
+        ? { definition: definition as ModuleSchemaMetadataDefinition, discovered, mode }
+        : { definition: definition as ModuleSchemaDefinition, discovered, mode },
+    );
   }
 
   return { issues, loaded };
@@ -197,6 +230,58 @@ function inspectTables(
 
   for (const loaded of loadedSchemas) {
     const moduleId = loaded.discovered.manifest.id;
+    if (loaded.mode === "abi-v1") {
+      const candidates: AbiModuleTableCandidate[] = [];
+      loaded.definition.tables.forEach((table, index) => {
+        const path = `tables.${index}`;
+        const candidate: AbiModuleTableCandidate = {
+          exportName: table.name,
+          foreignKeys: table.foreignKeys,
+          mode: "abi-v1",
+          moduleId,
+          name: table.name,
+          path,
+        };
+        const tablePrefix = moduleTablePrefix(moduleId);
+        if (!table.name.startsWith(tablePrefix)) {
+          issues.push(
+            issue(
+              "MODULE_SCHEMA_TABLE_NAMESPACE_INVALID",
+              moduleId,
+              `Table ${table.name} is not namespaced for module ${moduleId}.`,
+              { path, tableName: table.name },
+            ),
+          );
+        } else if (
+          !moduleTableLocalNameSchema.safeParse(table.name.slice(tablePrefix.length)).success
+        ) {
+          issues.push(
+            issue(
+              "MODULE_SCHEMA_TABLE_NAME_INVALID",
+              moduleId,
+              `Module ${moduleId} has an invalid local table name.`,
+              { path },
+            ),
+          );
+        }
+        const existing = firstTableByName.get(table.name);
+        if (existing) {
+          issues.push(
+            issue(
+              "MODULE_SCHEMA_TABLE_DUPLICATE",
+              moduleId,
+              `Table ${table.name} is declared more than once.`,
+              { path, tableName: table.name },
+            ),
+          );
+        } else {
+          firstTableByName.set(table.name, candidate);
+        }
+        candidates.push(candidate);
+      });
+      inspectedModules.push({ discovered: loaded.discovered, tables: candidates });
+      continue;
+    }
     const seenTables = new Set<AnyPgTable>();
     const candidates: ModuleTableCandidate[] = [];
     const entries = Object.entries(loaded.definition.tables).sort(([left], [right]) =>
@@ -293,6 +378,7 @@ function inspectTables(
       const candidate: ModuleTableCandidate = {
         exportName,
         foreignKeys: config.foreignKeys,
+        mode: "legacy",
         moduleId,
         name: config.name,
         path,
@@ -321,8 +407,8 @@ function inspectTables(
 }
 
 function validForeignKeyTarget(
-  foreignKey: ModuleTableCandidate["foreignKeys"][number],
-  candidate: ModuleTableCandidate,
+  foreignKey: LegacyModuleTableCandidate["foreignKeys"][number],
+  candidate: LegacyModuleTableCandidate,
 ): AnyPgTable | undefined {
   try {
     const reference = foreignKey.reference();
@@ -356,7 +442,9 @@ function inspectForeignKeys(
   const ownerByTable = new Map<AnyPgTable, ModuleId>();
   for (const inspected of inspectedModules) {
     for (const candidate of inspected.tables) {
-      ownerByTable.set(candidate.table, candidate.moduleId);
+      if (candidate.mode === "legacy") {
+        ownerByTable.set(candidate.table, candidate.moduleId);
+      }
     }
   }
 
@@ -364,6 +452,32 @@ function inspectForeignKeys(
     const moduleId = inspected.discovered.manifest.id;
     const ownedTables = new Set(inspected.tables.map((candidate) => candidate.table));
     for (const candidate of inspected.tables) {
+      if (candidate.mode === "abi-v1") {
+        const ownedNames = new Set(inspected.tables.map((table) => table.name));
+        candidate.foreignKeys.forEach((foreignKey, foreignKeyIndex) => {
+          const path = `${candidate.path}.foreignKeys.${foreignKeyIndex}`;
+          if (!foreignKey.table.startsWith(moduleTablePrefix(moduleId))) {
+            issues.push(
+              issue(
+                "MODULE_SCHEMA_CROSS_MODULE_FOREIGN_KEY",
+                moduleId,
+                `Table ${candidate.name} has a foreign key outside module ${moduleId}.`,
+                { path, tableName: candidate.name },
+              ),
+            );
+          } else if (!ownedNames.has(foreignKey.table)) {
+            issues.push(
+              issue(
+                "MODULE_SCHEMA_FOREIGN_KEY_TARGET_MISSING",
+                moduleId,
+                `Table ${candidate.name} references a table not exported by module ${moduleId}.`,
+                { path, tableName: candidate.name },
+              ),
+            );
+          }
+        });
+        continue;
+      }
       candidate.foreignKeys.forEach((foreignKey, foreignKeyIndex) => {
         const path = `${candidate.path}.foreignKeys.${foreignKeyIndex}`;
         const foreignTable = validForeignKeyTarget(foreignKey, candidate);
@@ -446,7 +560,9 @@ function publishAggregate(
         moduleId: inspected.discovered.manifest.id,
         tables: Object.freeze(
           inspected.tables
-            .map(({ foreignKeys: _foreignKeys, path: _path, ...table }) => Object.freeze(table))
+            .map(({ foreignKeys: _foreignKeys, mode: _mode, path: _path, ...table }) =>
+              Object.freeze(table),
+            )
             .sort((left, right) => compareText(left.exportName, right.exportName)),
         ),
       }),
@@ -458,7 +574,11 @@ function publishAggregate(
       .sort((left, right) => compareText(left.name, right.name)),
   );
   const drizzleSchema = Object.freeze(
-    Object.fromEntries(tables.map((table) => [table.name, table.table] as const)),
+    Object.fromEntries(
+      tables.flatMap((table) =>
+        table.table === undefined ? [] : [[table.name, table.table] as const],
+      ),
+    ),
   );
 
   return Object.freeze({ discoveredModules, drizzleSchema, modules, tables });

core/tests/account-preferences.test.ts

@@ -0,0 +1,178 @@
+import { readFile } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { getTableConfig } from "drizzle-orm/pg-core";
+import { describe, expect, it } from "vitest";
+import {
+  ACCOUNT_APPEARANCES,
+  ACCOUNT_MOTION_PREFERENCES,
+  ACCOUNT_PREFERENCE_NAMES,
+  AccountStoreError,
+  createAccountStore,
+  DEFAULT_ACCOUNT_PREFERENCES,
+  ekklesiaCoreUserPreference,
+  parseAccountPreferencesUpdate,
+  resolveAccountPreferences,
+} from "../src/account/index.js";
+
+const migrationsDirectory = path.join(
+  path.dirname(fileURLToPath(import.meta.url)),
+  "..",
+  "drizzle",
+);
+
+describe("account preferences model", () => {
+  it("defaults both preferences to following the system", () => {
+    expect(DEFAULT_ACCOUNT_PREFERENCES).toEqual({ appearance: "system", motion: "system" });
+    expect(Object.isFrozen(DEFAULT_ACCOUNT_PREFERENCES)).toBe(true);
+  });
+
+  it("declares a closed, ordered set of names and values", () => {
+    expect(ACCOUNT_PREFERENCE_NAMES).toEqual(["appearance", "motion"]);
+    expect(ACCOUNT_APPEARANCES).toEqual(["system", "light", "dark"]);
+    expect(ACCOUNT_MOTION_PREFERENCES).toEqual(["system", "reduce", "allow"]);
+  });
+
+  it.each(
+    ACCOUNT_APPEARANCES.map((appearance) => [appearance] as const),
+  )("accepts appearance %s on its own", (appearance) => {
+    expect(parseAccountPreferencesUpdate({ appearance })).toEqual({ appearance });
+  });
+
+  it.each(
+    ACCOUNT_MOTION_PREFERENCES.map((motion) => [motion] as const),
+  )("accepts motion %s on its own", (motion) => {
+    expect(parseAccountPreferencesUpdate({ motion })).toEqual({ motion });
+  });
+
+  it("accepts both preferences together", () => {
+    expect(parseAccountPreferencesUpdate({ appearance: "dark", motion: "reduce" })).toEqual({
+      appearance: "dark",
+      motion: "reduce",
+    });
+  });
+
+  it.each([
+    ["an empty object", {}],
+    ["null", null],
+    ["an array", [["appearance", "dark"]]],
+    ["a string", "dark"],
+    ["an unknown appearance", { appearance: "sepia" }],
+    ["an unknown motion", { motion: "none" }],
+    ["a differently cased value", { appearance: "Dark" }],
+    ["a non-string value", { appearance: 1 }],
+    ["a null value", { motion: null }],
+    ["an unknown key beside a valid one", { appearance: "dark", radius: "large" }],
+    ["an unknown key alone", { theme: "dark" }],
+    ["a user id", { appearance: "dark", userId: "someone-else" }],
+    ["a prototype key", JSON.parse('{"__proto__": {"appearance": "dark"}}')],
+    [
+      "a class instance",
+      new (class Preferences {
+        appearance = "dark";
+      })(),
+    ],
+  ])("refuses %s whole", (_label, value) => {
+    expect(parseAccountPreferencesUpdate(value)).toBeUndefined();
+  });
+
+  it("resolves never-chosen columns to the defaults, and keeps a chosen value", () => {
+    expect(resolveAccountPreferences({ appearance: null, motion: null })).toEqual(
+      DEFAULT_ACCOUNT_PREFERENCES,
+    );
+    expect(resolveAccountPreferences({ appearance: "dark", motion: null })).toEqual({
+      appearance: "dark",
+      motion: "system",
+    });
+    // A value the constraint should have made impossible is never passed through.
+    expect(resolveAccountPreferences({ appearance: "neon", motion: "allow" })).toEqual({
+      appearance: "system",
+      motion: "allow",
+    });
+  });
+});
+
+describe("account preference storage", () => {
+  it("is one row per person, keyed and cascaded by user id, with one typed column per preference", () => {
+    const config = getTableConfig(ekklesiaCoreUserPreference);
+    expect(config.name).toBe("ekklesia_core_user_preference");
+    expect(config.columns.map((column) => column.name).sort()).toEqual([
+      "appearance",
+      "created_at",
+      "motion",
+      "updated_at",
+      "user_id",
+    ]);
+    const userId = config.columns.find((column) => column.name === "user_id");
+    expect(userId?.primary).toBe(true);
+    // Preference columns are nullable: `null` is "never chosen", resolved to the default on read.
+    for (const name of ACCOUNT_PREFERENCE_NAMES) {
+      expect(config.columns.find((column) => column.name === name)?.notNull).toBe(false);
+    }
+    expect(config.foreignKeys).toHaveLength(1);
+    expect(config.foreignKeys[0]?.onDelete).toBe("cascade");
+  });
+
+  it("constrains each column in the migration to exactly the model's values", async () => {
+    const sql = await readFile(path.join(migrationsDirectory, "0008_user_preferences.sql"), "utf8");
+    const allowed = (column: string): string[] => {
+      const match = new RegExp(`"${column}" in \\(([^)]*)\\)`, "u").exec(sql);
+      return (match?.[1] ?? "").split(",").map((value) => value.trim().replaceAll("'", ""));
+    };
+    expect(allowed("appearance")).toEqual([...ACCOUNT_APPEARANCES]);
+    expect(allowed("motion")).toEqual([...ACCOUNT_MOTION_PREFERENCES]);
+    // No JSON, no key/value pair, nothing a client could fill with anything.
+    expect(sql).not.toMatch(/jsonb?|hstore/iu);
+  });
+
+  it("is a migration that destroys nothing", async () => {
+    const metadata = JSON.parse(
+      await readFile(path.join(migrationsDirectory, "meta", "_ekklesia.json"), "utf8"),
+    ) as { entries: { tag: string; destructive: { mode: string } }[] };
+    expect(metadata.entries.find((entry) => entry.tag === "0008_user_preferences")).toEqual({
+      destructive: { mode: "none" },
+      tag: "0008_user_preferences",
+    });
+  });
+});
+
+describe("account store validation", () => {
+  it("refuses an invalid update before touching the database", async () => {
+    const untouchable = new Proxy(
+      {},
+      {
+        get() {
+          throw new Error("the database must not be reached");
+        },
+      },
+    );
+    const store = createAccountStore(untouchable as never);
+    await expect(
+      store.updatePreferences("user-1" as never, { appearance: "sepia" } as never),
+    ).rejects.toMatchObject({ code: "ACCOUNT_PREFERENCES_INVALID", name: "AccountStoreError" });
+    await expect(store.updatePreferences("user-1" as never, {})).rejects.toBeInstanceOf(
+      AccountStoreError,
+    );
+  });
+
+  it("reports a database failure without the underlying error", async () => {
+    const failing = {
+      select() {
+        throw new Error("connect ECONNREFUSED postgres://secret@db:5432");
+      },
+      transaction() {
+        throw new Error("connect ECONNREFUSED postgres://secret@db:5432");
+      },
+    };
+    const store = createAccountStore(failing as never);
+    const read = await store.readAccount("user-1" as never).catch((error: unknown) => error);
+    expect(read).toBeInstanceOf(AccountStoreError);
+    expect(read).toMatchObject({ code: "ACCOUNT_READ_FAILED" });
+    expect(String((read as Error).stack)).not.toContain("secret");
+    const write = await store
+      .updatePreferences("user-1" as never, { appearance: "dark" })
+      .catch((error: unknown) => error);
+    expect(write).toMatchObject({ code: "ACCOUNT_WRITE_FAILED" });
+    expect(String((write as Error).message)).not.toContain("ECONNREFUSED");
+  });
+});

core/tests/account-store.integration.ts

@@ -0,0 +1,378 @@
+import { randomBytes } from "node:crypto";
+import { mkdtemp, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import type { EkklesiaUserId } from "@ekklesia/contracts";
+import { Client, type QueryResultRow } from "pg";
+import { afterAll, describe, expect, it } from "vitest";
+import {
+  type AccountStore,
+  AccountStoreError,
+  createAccountDrizzleView,
+  createAccountStore,
+} from "../src/account/index.js";
+import { createValidatedPostgresPool } from "../src/database/index.js";
+import {
+  applyModuleMigrations,
+  createPostgresMigrationDatabase,
+  discoverAllMigrations,
+} from "../src/migrations/index.js";
+
+/**
+ * A person's own account summary and preferences against real PostgreSQL (ADR 0062).
+ *
+ * The unit suite proves the model and parser; this proves what only a database can: that the
+ * migration creates the table with its constraints, that a choice survives a completely new
+ * connection (which is what "follows you to another device" rests on), that one person's change
+ * never touches another's row, that the database itself refuses a value outside the model, and
+ * that deleting a person deletes their preferences.
+ */
+const integrationDatabaseUrlEnvironment = "EKKLESIA_MIGRATION_TEST_DATABASE_URL";
+const coreMigrationsDirectory = path.join(
+  path.dirname(fileURLToPath(import.meta.url)),
+  "..",
+  "drizzle",
+);
+const trackedDatabases = new Set<string>();
+let databaseCounter = 0;
+
+class IntegrationHarnessError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "IntegrationHarnessError";
+    this.stack = `${this.name}: ${this.message}`;
+  }
+}
+
+function harnessError(message: string): IntegrationHarnessError {
+  return new IntegrationHarnessError(message);
+}
+
+function baseDatabaseUrl(): string {
+  const value = process.env[integrationDatabaseUrlEnvironment];
+  if (typeof value !== "string" || value.trim() === "") {
+    throw harnessError("The account integration database is not configured.");
+  }
+  try {
+    const parsed = new URL(value);
+    if (parsed.protocol !== "postgres:" && parsed.protocol !== "postgresql:") {
+      throw new TypeError("Unsupported protocol.");
+    }
+  } catch {
+    throw harnessError("The account integration database configuration is invalid.");
+  }
+  return value;
+}
+
+function quoteDatabaseName(databaseName: string): string {
+  if (!/^[a-z][a-z0-9_]{0,62}$/u.test(databaseName)) {
+    throw harnessError("The generated integration database name is invalid.");
+  }
+  return `"${databaseName}"`;
+}
+
+function makeDatabaseName(label: string): string {
+  const safeLabel = label
+    .toLowerCase()
+    .replaceAll(/[^a-z0-9]+/gu, "_")
+    .replaceAll(/^_+|_+$/gu, "")
+    .slice(0, 14);
+  databaseCounter += 1;
+  return `ekk_acct_${process.pid}_${databaseCounter}_${safeLabel || "scenario"}_${randomBytes(4).toString("hex")}`;
+}
+
+function databaseUrl(databaseName: string): string {
+  const parsed = new URL(baseDatabaseUrl());
+  parsed.pathname = `/${databaseName}`;
+  parsed.searchParams.delete("application_name");
+  return parsed.toString();
+}
+
+async function openAdministrativeClient(connectionString: string): Promise<Client> {
+  const client = new Client({ connectionString });
+  client.on("error", () => undefined);
+  try {
+    await client.connect();
+    return client;
+  } catch {
+    try {
+      await client.end();
+    } catch {
+      // The public harness failure stays static when connection cleanup also fails.
+    }
+    throw harnessError("The account integration database connection failed.");
+  }
+}
+
+async function safeQuery<Row extends QueryResultRow>(
+  client: Client,
+  text: string,
+  values: unknown[] = [],
+): Promise<readonly Row[]> {
+  try {
+    const result = await client.query<Row>(text, values);
+    return result.rows;
+  } catch {
+    throw harnessError("An integration database administration operation failed.");
+  }
+}
+
+async function safeEnd(client: Client): Promise<void> {
+  try {
+    await client.end();
+  } catch {
+    throw harnessError("An integration database connection could not be closed.");
+  }
+}
+
+async function dropDatabase(databaseName: string): Promise<void> {
+  const admin = await openAdministrativeClient(baseDatabaseUrl());
+  try {
+    await safeQuery(
+      admin,
+      "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = $1 AND pid <> pg_backend_pid()",
+      [databaseName],
+    );
+    await safeQuery(
+      admin,
+      `DROP DATABASE IF EXISTS ${quoteDatabaseName(databaseName)} WITH (FORCE)`,
+    );
+    trackedDatabases.delete(databaseName);
+  } finally {
+    await safeEnd(admin);
+  }
+}
+
+async function createDisposableDatabase(label: string): Promise<{ name: string; url: string }> {
+  const name = makeDatabaseName(label);
+  const admin = await openAdministrativeClient(baseDatabaseUrl());
+  try {
+    await safeQuery(admin, `CREATE DATABASE ${quoteDatabaseName(name)} TEMPLATE template0`);
+  } finally {
+    await safeEnd(admin);
+  }
+  trackedDatabases.add(name);
+  return { name, url: databaseUrl(name) };
+}
+
+async function applyCoreMigrations(url: string): Promise<void> {
+  const emptyModulesDirectory = await mkdtemp(path.join(tmpdir(), "ekklesia-acct-no-modules-"));
+  try {
+    const aggregate = await discoverAllMigrations({
+      coreMigrationsDirectory,
+      moduleDiscovery: {
+        moduleSdkVersion: "0.1.0",
+        modulesDirectory: emptyModulesDirectory,
+        platformVersion: "0.1.0",
+      },
+    });
+    expect(aggregate.migrations.map((entry) => entry.identity)).toEqual([
+      "core:0000_identity_core_tables",
+      "core:0001_authorization_core_tables",
+      "core:0002_authorization_integrity",
+      "core:0003_dashboard_navigation_tables",
+      "core:0004_module_lifecycle_state",
+      "core:0005_module_configuration",
+      "core:0006_device_identity",
+      "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
+    ]);
+    await applyModuleMigrations({ aggregate, database: createPostgresMigrationDatabase(url) });
+  } finally {
+    await rm(emptyModulesDirectory, { force: true, recursive: true });
+  }
+}
+
+afterAll(async () => {
+  for (const databaseName of [...trackedDatabases]) {
+    await dropDatabase(databaseName).catch(() => undefined);
+  }
+});
+
+const ada = "user-ada" as EkklesiaUserId;
+const grace = "user-grace" as EkklesiaUserId;
+const nobody = "user-nobody" as EkklesiaUserId;
+
+async function insertPerson(
+  client: Client,
+  id: string,
+  name: string,
+  email: string,
+): Promise<void> {
+  await safeQuery(
+    client,
+    "insert into ekklesia_core_user (id, name, email, email_verified) values ($1, $2, $3, true)",
+    [id, name, email],
+  );
+}
+
+describe.sequential("live Core account store", () => {
+  let database: { name: string; url: string };
+  let admin: Client;
+  let store: AccountStore;
+  let close: () => Promise<void>;
+
+  it("creates the preference table with its constraints", async () => {
+    database = await createDisposableDatabase("fresh");
+    await applyCoreMigrations(database.url);
+    admin = await openAdministrativeClient(database.url);
+
+    const constraints = await safeQuery<{ constraint_name: string; constraint_type: string }>(
+      admin,
+      `select constraint_name, constraint_type from information_schema.table_constraints
+        where table_name = 'ekklesia_core_user_preference' and constraint_type <> 'CHECK'
+           or constraint_name like 'ekklesia_core_user_preference_%_check'
+        order by constraint_name`,
+    );
+    const deleteRules = await safeQuery<{ delete_rule: string }>(
+      admin,
+      `select rc.delete_rule from information_schema.referential_constraints rc
+         join information_schema.table_constraints tc on tc.constraint_name = rc.constraint_name
+        where tc.table_name = 'ekklesia_core_user_preference'`,
+    );
+
+    expect(constraints.map((constraint) => constraint.constraint_name)).toEqual([
+      "ekklesia_core_user_preference_appearance_check",
+      "ekklesia_core_user_preference_motion_check",
+      "ekklesia_core_user_preference_pkey",
+      "ekklesia_core_user_preference_user_id_ekklesia_core_user_id_fk",
+    ]);
+    expect(deleteRules.map((rule) => rule.delete_rule)).toEqual(["CASCADE"]);
+
+    await insertPerson(admin, ada, "Ada Lovelace", "[email protected]");
+    await insertPerson(admin, grace, "Grace Hopper", "[email protected]");
+
+    const handle = createValidatedPostgresPool(database.url);
+    close = handle.close;
+    store = createAccountStore(createAccountDrizzleView(handle.pool));
+  });
+
+  it("reads a person who never chose anything with their name, email, and the defaults", async () => {
+    expect(await store.readAccount(ada)).toEqual({
+      email: "[email protected]",
+      name: "Ada Lovelace",
+      preferences: { appearance: "system", motion: "system" },
+    });
+    const rows = await safeQuery(admin, "select * from ekklesia_core_user_preference");
+    // Reading never materializes a row nobody chose.
+    expect(rows).toHaveLength(0);
+  });
+
+  it("answers undefined for a person who does not exist", async () => {
+    expect(await store.readAccount(nobody)).toBeUndefined();
+  });
+
+  it.each([
+    ["appearance", "light"],
+    ["appearance", "dark"],
+    ["appearance", "system"],
+    ["motion", "reduce"],
+    ["motion", "allow"],
+    ["motion", "system"],
+  ] as const)("saves %s %s and reads it back", async (name, value) => {
+    const saved = await store.updatePreferences(ada, { [name]: value });
+    expect(saved[name]).toBe(value);
+    expect((await store.readAccount(ada))?.preferences[name]).toBe(value);
+  });
+
+  it("changes only the preference named, keeping the other", async () => {
+    await store.updatePreferences(ada, { appearance: "dark", motion: "reduce" });
+    expect(await store.updatePreferences(ada, { motion: "allow" })).toEqual({
+      appearance: "dark",
+      motion: "allow",
+    });
+    expect(await store.updatePreferences(ada, { appearance: "light" })).toEqual({
+      appearance: "light",
+      motion: "allow",
+    });
+  });
+
+  it("stores a first partial choice with the other preference still never chosen", async () => {
+    expect(await store.updatePreferences(grace, { motion: "reduce" })).toEqual({
+      appearance: "system",
+      motion: "reduce",
+    });
+    const rows = await safeQuery<{ appearance: string | null; motion: string | null }>(
+      admin,
+      "select appearance, motion from ekklesia_core_user_preference where user_id = $1",
+      [grace],
+    );
+    expect(rows).toEqual([{ appearance: null, motion: "reduce" }]);
+  });
+
+  it("keeps each person's preferences to themselves", async () => {
+    await store.updatePreferences(ada, { appearance: "dark", motion: "allow" });
+    await store.updatePreferences(grace, { appearance: "light", motion: "reduce" });
+    expect((await store.readAccount(ada))?.preferences).toEqual({
+      appearance: "dark",
+      motion: "allow",
+    });
+    expect(await store.readAccount(grace)).toEqual({
+      email: "[email protected]",
+      name: "Grace Hopper",
+      preferences: { appearance: "light", motion: "reduce" },
+    });
+  });
+
+  it("survives a completely new connection, as another device signing in would see", async () => {
+    const reopened = createValidatedPostgresPool(database.url);
+    try {
+      const other = createAccountStore(createAccountDrizzleView(reopened.pool));
+      expect((await other.readAccount(ada))?.preferences).toEqual({
+        appearance: "dark",
+        motion: "allow",
+      });
+    } finally {
+      await reopened.close();
+    }
+  });
+
+  it("refuses to store preferences for a person who does not exist", async () => {
+    const failure = await store
+      .updatePreferences(nobody, { appearance: "dark" })
+      .catch((error: unknown) => error);
+    expect(failure).toBeInstanceOf(AccountStoreError);
+    expect(failure).toMatchObject({ code: "ACCOUNT_NOT_FOUND" });
+    const rows = await safeQuery(
+      admin,
+      "select 1 from ekklesia_core_user_preference where user_id = $1",
+      [nobody],
+    );
+    expect(rows).toHaveLength(0);
+  });
+
+  it("refuses an invalid update with nothing written", async () => {
+    await expect(
+      store.updatePreferences(ada, { appearance: "sepia" } as never),
+    ).rejects.toMatchObject({ code: "ACCOUNT_PREFERENCES_INVALID" });
+    expect((await store.readAccount(ada))?.preferences.appearance).toBe("dark");
+  });
+
+  it("has the database itself refuse a value outside the model", async () => {
+    await expect(
+      admin.query(
+        "update ekklesia_core_user_preference set appearance = 'sepia' where user_id = $1",
+        [ada],
+      ),
+    ).rejects.toMatchObject({ code: "23514" });
+    await expect(
+      admin.query("update ekklesia_core_user_preference set motion = 'none' where user_id = $1", [
+        ada,
+      ]),
+    ).rejects.toMatchObject({ code: "23514" });
+  });
+
+  it("deletes a person's preferences with the person", async () => {
+    await safeQuery(admin, "delete from ekklesia_core_user where id = $1", [grace]);
+    const rows = await safeQuery(
+      admin,
+      "select 1 from ekklesia_core_user_preference where user_id = $1",
+      [grace],
+    );
+    expect(rows).toHaveLength(0);
+    expect(await store.readAccount(grace)).toBeUndefined();
+    await safeEnd(admin);
+    await close();
+  });
+});

core/tests/authorization-permissions.test.ts

@@ -3,6 +3,7 @@ import { describe, expect, it } from "vitest";
 import {
   CORE_AUTHORIZATION_GRANTS_MANAGE,
   CORE_DASHBOARD_NAVIGATION_MANAGE,
+  CORE_ACCOUNT_SELF_MANAGE,
   CORE_DEVICES_MANAGE,
   CORE_MODULES_CONFIGURATION_MANAGE,
   CORE_MODULES_LIFECYCLE_MANAGE,
@@ -133,7 +134,13 @@ describe("CORE_PERMISSION_REGISTRY", () => {
     expect(CORE_MODULES_CONFIGURATION_MANAGE).not.toBe(CORE_MODULES_LIFECYCLE_MANAGE);
   });
 
-  it("contains exactly these six permissions and no others", () => {
+  it("registers core.account.self.manage as authenticated: managing your own account needs no grant", () => {
+    const declaration = CORE_PERMISSION_REGISTRY.get(CORE_ACCOUNT_SELF_MANAGE);
+    expect(declaration?.baseline).toBe("authenticated");
+    expect(declaration?.id).toBe("core.account.self.manage");
+  });
+
+  it("contains exactly these seven permissions and no others", () => {
     expect(CORE_PERMISSION_REGISTRY.declarations.map((declaration) => declaration.id)).toEqual([
       CORE_AUTHORIZATION_GRANTS_MANAGE,
       CORE_MODULES_UI_READ,
@@ -141,6 +148,7 @@ describe("CORE_PERMISSION_REGISTRY", () => {
       CORE_MODULES_LIFECYCLE_MANAGE,
       CORE_MODULES_CONFIGURATION_MANAGE,
       CORE_DEVICES_MANAGE,
+      CORE_ACCOUNT_SELF_MANAGE,
     ]);
   });
 });
@@ -178,6 +186,11 @@ describe("CORE_PERMISSION_DECLARATIONS", () => {
         description: "Approve display device pairing, list paired devices, and revoke a device.",
         id: CORE_DEVICES_MANAGE,
       },
+      {
+        baseline: "authenticated",
+        description: "Read your own account and read and change your own preferences.",
+        id: CORE_ACCOUNT_SELF_MANAGE,
+      },
     ]);
     expect(Object.isFrozen(CORE_PERMISSION_DECLARATIONS)).toBe(true);
     for (const declaration of CORE_PERMISSION_DECLARATIONS) {

core/tests/authorization-store.integration.ts

@@ -178,6 +178,7 @@ async function applyCoreMigrations(url: string): Promise<void> {
       "core:0005_module_configuration",
       "core:0006_device_identity",
       "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
     ]);
     await applyModuleMigrations({ aggregate, database: createPostgresMigrationDatabase(url) });
   } finally {
@@ -243,6 +244,8 @@ describe.sequential("live Core authorization store", () => {
       "ekklesia_core_platform_owner_bootstrap",
       "ekklesia_core_session",
       "ekklesia_core_user",
+      // A person's own preferences, one typed column each (ADR 0062).
+      "ekklesia_core_user_preference",
       "ekklesia_core_verification",
     ]);
 

core/tests/cli-bootstrap-platform-owner.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it, vi } from "vitest";
+import { IMPORT_SAFETY_TEST_TIMEOUT_MS } from "./support/import-safety.js";
 
 const poolConstructor = vi.hoisted(() => vi.fn());
 
@@ -7,16 +8,20 @@ vi.mock("pg", () => ({ Pool: poolConstructor }));
 describe("bootstrap-platform-owner CLI import safety", () => {
   const originalEnv = { ...process.env };
 
-  it("does not read DATABASE_URL, connect to PostgreSQL, or run bootstrap merely by importing the module", async () => {
-    delete process.env.DATABASE_URL;
+  it(
+    "does not read DATABASE_URL, connect to PostgreSQL, or run bootstrap merely by importing the module",
+    async () => {
+      delete process.env.DATABASE_URL;
 
-    // Under Vitest, process.argv[1] is never this file's own path, so isDirectExecution() is
-    // false the same way it naturally is for apps/api/src/server.ts under its own test suite —
-    // no argv manipulation is needed to prove the guard holds.
-    await expect(import("../src/cli/bootstrap-platform-owner.js")).resolves.toBeDefined();
+      // Under Vitest, process.argv[1] is never this file's own path, so isDirectExecution() is
+      // false the same way it naturally is for apps/api/src/server.ts under its own test suite —
+      // no argv manipulation is needed to prove the guard holds.
+      await expect(import("../src/cli/bootstrap-platform-owner.js")).resolves.toBeDefined();
 
-    expect(poolConstructor).not.toHaveBeenCalled();
+      expect(poolConstructor).not.toHaveBeenCalled();
 
-    process.env = originalEnv;
-  });
+      process.env = originalEnv;
+    },
+    IMPORT_SAFETY_TEST_TIMEOUT_MS,
+  );
 });

core/tests/cli-create-initial-owner.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it, vi } from "vitest";
+import { IMPORT_SAFETY_TEST_TIMEOUT_MS } from "./support/import-safety.js";
 
 const poolConstructor = vi.hoisted(() => vi.fn());
 
@@ -7,18 +8,22 @@ vi.mock("pg", () => ({ Pool: poolConstructor }));
 describe("create-initial-owner CLI import safety", () => {
   const originalEnv = { ...process.env };
 
-  it("does not read DATABASE_URL, connect to PostgreSQL, or create anything merely by importing the module", async () => {
-    delete process.env.DATABASE_URL;
+  it(
+    "does not read DATABASE_URL, connect to PostgreSQL, or create anything merely by importing the module",
+    async () => {
+      delete process.env.DATABASE_URL;
 
-    // Under Vitest, process.argv[1] is never this file's own path, so isDirectExecution() is false
-    // exactly as it is for `bootstrap-platform-owner.ts` — no argv manipulation is needed to prove
-    // the guard holds. Importing the command must never prompt, connect, or write.
-    await expect(import("../src/cli/create-initial-owner.js")).resolves.toBeDefined();
+      // Under Vitest, process.argv[1] is never this file's own path, so isDirectExecution() is false
+      // exactly as it is for `bootstrap-platform-owner.ts` — no argv manipulation is needed to prove
+      // the guard holds. Importing the command must never prompt, connect, or write.
+      await expect(import("../src/cli/create-initial-owner.js")).resolves.toBeDefined();
 
-    expect(poolConstructor).not.toHaveBeenCalled();
+      expect(poolConstructor).not.toHaveBeenCalled();
 
-    process.env = originalEnv;
-  });
+      process.env = originalEnv;
+    },
+    IMPORT_SAFETY_TEST_TIMEOUT_MS,
+  );
 
   it("reads no environment variable for the password", async () => {
     // The password is prompted for or read from standard input; it is deliberately never taken from

core/tests/core-migration-discovery.test.ts

@@ -91,7 +91,7 @@ async function createModule(
     writeFile(
       path.join(moduleDirectory, "ekklesia.module.json"),
       JSON.stringify({
-        manifestVersion: 7,
+        manifestVersion: 8,
         id,
         name: `${id} module`,
         version: "0.1.0",

core/tests/dashboard-flat-modules.test.ts

@@ -59,7 +59,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         : {}),
       entrypoints: { server: "./dist/server/index.js", ui: "./dist/ui/index.js" },
       id: fixture.id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: fixture.name,
       version: "1.0.0",
     }),

core/tests/dashboard-store.integration.ts

@@ -177,6 +177,7 @@ async function applyCoreMigrations(url: string): Promise<void> {
       "core:0005_module_configuration",
       "core:0006_device_identity",
       "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
     ]);
     await applyModuleMigrations({ aggregate, database: createPostgresMigrationDatabase(url) });
   } finally {

core/tests/doctor-host-configuration.test.ts

@@ -83,7 +83,7 @@ function discoveredModule(id: string, overrides: Record<string, unknown> = {}):
       },
       entrypoints: { server: "./dist/server.js" },
       id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${id} module`,
       permissions: [],
       storage: { buckets: [] },

core/tests/doctor-import.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it, vi } from "vitest";
+import { IMPORT_SAFETY_TEST_TIMEOUT_MS } from "./support/import-safety.js";
 
 const discoverModules = vi.fn();
 const discoverModuleSchemas = vi.fn();
@@ -22,24 +23,28 @@ vi.mock("../src/migrations/index.js", async (importOriginal) => ({
 }));
 
 describe("Doctor import safety", () => {
-  it("does not discover, connect, plan, or print when imported", async () => {
-    const log = vi.spyOn(console, "log").mockImplementation(() => undefined);
-    const error = vi.spyOn(console, "error").mockImplementation(() => undefined);
+  it(
+    "does not discover, connect, plan, or print when imported",
+    async () => {
+      const log = vi.spyOn(console, "log").mockImplementation(() => undefined);
+      const error = vi.spyOn(console, "error").mockImplementation(() => undefined);
 
-    await import("../src/diagnostics/index.js");
-    await import("../src/cli/doctor.js");
-    await import("../src/index.js");
+      await import("../src/diagnostics/index.js");
+      await import("../src/cli/doctor.js");
+      await import("../src/index.js");
 
-    expect(discoverModules).not.toHaveBeenCalled();
-    expect(discoverModuleSchemas).not.toHaveBeenCalled();
-    expect(discoverModuleMigrations).not.toHaveBeenCalled();
-    expect(startModuleRuntime).not.toHaveBeenCalled();
-    expect(createPostgresMigrationDatabase).not.toHaveBeenCalled();
-    expect(planModuleMigrations).not.toHaveBeenCalled();
-    expect(log).not.toHaveBeenCalled();
-    expect(error).not.toHaveBeenCalled();
+      expect(discoverModules).not.toHaveBeenCalled();
+      expect(discoverModuleSchemas).not.toHaveBeenCalled();
+      expect(discoverModuleMigrations).not.toHaveBeenCalled();
+      expect(startModuleRuntime).not.toHaveBeenCalled();
+      expect(createPostgresMigrationDatabase).not.toHaveBeenCalled();
+      expect(planModuleMigrations).not.toHaveBeenCalled();
+      expect(log).not.toHaveBeenCalled();
+      expect(error).not.toHaveBeenCalled();
 
-    log.mockRestore();
-    error.mockRestore();
-  });
+      log.mockRestore();
+      error.mockRestore();
+    },
+    IMPORT_SAFETY_TEST_TIMEOUT_MS,
+  );
 });

core/tests/doctor-report.test.ts

@@ -92,7 +92,7 @@ Modules
   ✓ Dependency graph valid
     Dependency order is empty.
   ✓ Permission registry composed
-    6 permissions registered
+    7 permissions registered
   ○ Module lifecycle skipped
     DATABASE_URL is not configured.
   ○ Module configuration skipped

core/tests/doctor.test.ts

@@ -1,8 +1,8 @@
-import { type ModuleManifest, parsePermissionId } from "@ekklesia/contracts";
 import { mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
+import { type ModuleManifest, parsePermissionId } from "@ekklesia/contracts";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { createPermissionRegistry, PermissionRegistryError } from "../src/authorization/index.js";
 import {
@@ -32,7 +32,11 @@ const checksumA = "a".repeat(64);
 const checksumB = "b".repeat(64);
 const checksumC = "c".repeat(64);
 
-function discoveredModule(id: string, version = "0.1.0"): DiscoveredModule {
+function discoveredModule(
+  id: string,
+  version = "0.1.0",
+  database?: { readonly abi: 1 },
+): DiscoveredModule {
   return {
     contributions: [],
     directory: `/unpublished/${id}`,
@@ -41,13 +45,14 @@ function discoveredModule(id: string, version = "0.1.0"): DiscoveredModule {
       capabilities: [],
       compatibility: { moduleSdk: "^0.1.0", platform: "^0.1.0" },
       configuration: [],
+      ...(database ? { database } : {}),
       dependencies: {
         capabilities: { optional: {}, required: {} },
         modules: { optional: {}, required: {} },
       },
       entrypoints: { server: "./dist/server.js" },
       id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${id} module`,
       permissions: [],
       storage: { buckets: [] },
@@ -294,7 +299,7 @@ describe("Ekklesia Doctor outbound email reporting", () => {
 describe("Ekklesia Doctor diagnostics", () => {
   it("publishes a healthy deterministic static report without database configuration", async () => {
     const people = discoveredModule("people");
-    const calendar = discoveredModule("calendar", "0.2.0");
+    const calendar = discoveredModule("calendar", "0.2.0", { abi: 1 });
     const inventory = migrationAggregate(
       [migration("people", "0000_initial", checksumA)],
       [people, calendar],
@@ -327,6 +332,7 @@ describe("Ekklesia Doctor diagnostics", () => {
     ]);
     expect(check(report, "modules.discovery").details).toEqual(["people 0.1.0", "calendar 0.2.0"]);
     expect(check(report, "modules.dependencies").details).toEqual(["Order: people → calendar"]);
+    expect(check(report, "schemas.discovery")).toMatchObject({ status: "pass" });
     expect(check(report, "modules.permissions")).toMatchObject({
       details: ["0 permissions registered"],
       status: "pass",

core/tests/fixtures/module-database-integration/db-facade/ekklesia.module.json

@@ -1,12 +1,12 @@
 {
-  "manifestVersion": 7,
+  "manifestVersion": 8,
   "id": "db-facade",
   "name": "Database Facade Integration Test Module",
   "description": "Test-only installed module fixture proving ModuleDatabase against real PostgreSQL. Never discovered by production startup, Doctor, or normal migration aggregation — only apps/api/tests/module-database.integration.ts points discovery at it explicitly.",
   "version": "0.1.0",
   "compatibility": {
-    "platform": "^0.1.0",
-    "moduleSdk": "^0.1.0"
+    "platform": "^0.2.0",
+    "moduleSdk": "^0.2.0"
   },
   "permissions": [
     {

core/tests/identity-verification-boundaries.test.ts

@@ -169,13 +169,57 @@ describe("the browser shell reaches none of it", () => {
   });
 
   it("never puts a reset token in browser storage", async () => {
-    for (const file of await readTypeScriptFiles(path.join("surfaces", "shell", "src"))) {
+    // A reset token is a bearer credential for one account; the shell holds it in React state for
+    // the life of one form and nowhere else. The shell's uses of browser storage are pinned
+    // exactly: the desktop sidebar's expanded/collapsed mode (ADR 0058) and the pre-paint copy of
+    // the person's appearance (ADR 0062). `localStorage` is named only by the entry point, once, to
+    // hand to those two, and by the pre-paint script, once, to read its one key. Each write is its
+    // own fixed key and a validated value.
+    const files = await readTypeScriptFiles(path.join("surfaces", "shell", "src"));
+    const writes: string[] = [];
+    const removals: string[] = [];
+    for (const file of files) {
       const code = withoutComments(file.text);
-      // A reset token is a bearer credential for one account; the shell holds it in React state for
-      // the life of one form and nowhere else.
-      expect(code, file.path).not.toContain("localStorage");
       expect(code, file.path).not.toContain("sessionStorage");
       expect(code, file.path).not.toContain("document.cookie");
+      writes.push(
+        ...[...code.matchAll(/\.setItem\(([^)]*)\)/gu)].map(
+          (match) => `${path.relative(repositoryRoot, file.path)}: ${match[1]}`,
+        ),
+      );
+      removals.push(
+        ...[...code.matchAll(/\.removeItem\(([^)]*)\)/gu)].map(
+          (match) => `${path.relative(repositoryRoot, file.path)}: ${match[1]}`,
+        ),
+      );
+      if (file.path.endsWith(path.join("browser", "main.tsx"))) {
+        expect(code.match(/localStorage/gu), file.path).toHaveLength(1);
+        expect(code).toMatch(
+          /const browserStorage = \(\(\) => \{\s*try \{\s*return window\.localStorage;/u,
+        );
+        expect(code).toContain("createLocalSidebarPreference(browserStorage)");
+        expect(code).toContain("createLocalAppearanceCache(browserStorage)");
+      } else if (file.path.endsWith(path.join("browser", "appearance-boot.ts"))) {
+        expect(code.match(/localStorage/gu), file.path).toHaveLength(1);
+        expect(code).toContain("window.localStorage.getItem(APPEARANCE_CACHE_KEY)");
+      } else {
+        expect(code, file.path).not.toContain("localStorage");
+      }
+    }
+    expect(writes).toEqual([
+      `${path.join("surfaces", "shell", "src", "browser", "appearance-cache.ts")}: APPEARANCE_CACHE_KEY, serialized`,
+      `${path.join("surfaces", "shell", "src", "browser", "sidebar-preference.ts")}: SIDEBAR_PREFERENCE_KEY, mode`,
+    ]);
+    expect(removals).toEqual([
+      `${path.join("surfaces", "shell", "src", "browser", "appearance-cache.ts")}: APPEARANCE_CACHE_KEY`,
+    ]);
+    // The files that ever hold the token touch no storage API at all.
+    for (const file of files.filter((candidate) =>
+      ["auth-protocol.ts", "ResetPasswordForm.tsx", "HostApp.tsx"].some((name) =>
+        candidate.path.endsWith(name),
+      ),
+    )) {
+      expect(withoutComments(file.text), file.path).not.toMatch(/\b(?:setItem|getItem|Storage)\b/u);
     }
   });
 });

core/tests/legacy-schema-definition.test.ts

@@ -0,0 +1,34 @@
+import { alias, getTableConfig, integer, pgTable } from "drizzle-orm/pg-core";
+import { describe, expect, it } from "vitest";
+import { parseModuleSchemaDefinition } from "../src/modules/legacy-schema-definition.js";
+
+describe("the legacy module schema definition", () => {
+  it("normalizes and freezes a typed schema definition without freezing its tables", () => {
+    const records = pgTable("example_records", { id: integer().primaryKey() });
+    const definition = parseModuleSchemaDefinition({
+      moduleId: "example",
+      tables: { records },
+    });
+
+    expect(definition.tables.records).toBe(records);
+    expect(getTableConfig(records).name).toBe("example_records");
+    expect(Object.isFrozen(definition)).toBe(true);
+    expect(Object.isFrozen(definition.tables)).toBe(true);
+    expect(Object.isFrozen(records)).toBe(false);
+  });
+
+  it("rejects malformed, empty, unknown, and non-PostgreSQL table definitions", () => {
+    const records = pgTable("example_records", { id: integer() });
+    const disguisedRecords = alias(records, "example_disguised_records");
+    expect(() => parseModuleSchemaDefinition({ moduleId: "example", tables: {} })).toThrow();
+    expect(() =>
+      parseModuleSchemaDefinition({ moduleId: "example", tables: { records: {} } }),
+    ).toThrow();
+    expect(() =>
+      parseModuleSchemaDefinition({ moduleId: "example", tables: { records }, extra: true }),
+    ).toThrow();
+    expect(() =>
+      parseModuleSchemaDefinition({ moduleId: "example", tables: { disguisedRecords } }),
+    ).toThrow();
+  });
+});

core/tests/module-configuration-lifecycle.test.ts

@@ -17,7 +17,7 @@ function fakeModule(
   } = {},
 ): DiscoveredModule {
   const manifest = parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "1.0.0",

core/tests/module-configuration-store.integration.ts

@@ -179,6 +179,7 @@ async function applyCoreMigrations(url: string): Promise<void> {
       "core:0005_module_configuration",
       "core:0006_device_identity",
       "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
     ]);
     await applyModuleMigrations({ aggregate, database: createPostgresMigrationDatabase(url) });
   } finally {
@@ -194,7 +195,7 @@ afterAll(async () => {
 
 function manifestWith(configuration: readonly Record<string, unknown>[], id = "announcements") {
   return parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "1.0.0",

core/tests/module-configuration.test.ts

@@ -21,7 +21,7 @@ function manifestWith(
   id = "announcements",
 ) {
   return parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "1.0.0",
@@ -92,7 +92,7 @@ describe("module configuration declarations", () => {
 
   it("rejects two declarations of the same key, so an ordinary key and a secret can never collide", () => {
     const result = safeParseModuleManifest({
-      manifestVersion: 7,
+      manifestVersion: 8,
       id: "announcements",
       name: "announcements module",
       version: "1.0.0",
@@ -114,7 +114,7 @@ describe("module configuration declarations", () => {
 
   it("rejects a default on a secret, because a checked-in default credential is a leaked one", () => {
     const result = safeParseModuleManifest({
-      manifestVersion: 7,
+      manifestVersion: 8,
       id: "announcements",
       name: "announcements module",
       version: "1.0.0",
@@ -130,7 +130,7 @@ describe("module configuration declarations", () => {
 
   it("rejects a key that is both required and defaulted, which states an intent nothing can honour", () => {
     const result = safeParseModuleManifest({
-      manifestVersion: 7,
+      manifestVersion: 8,
       id: "announcements",
       name: "announcements module",
       version: "1.0.0",
@@ -169,7 +169,7 @@ describe("module configuration declarations", () => {
     ],
   ])("rejects %s", (_label, declaration) => {
     const result = safeParseModuleManifest({
-      manifestVersion: 7,
+      manifestVersion: 8,
       id: "announcements",
       name: "announcements module",
       version: "1.0.0",
@@ -189,7 +189,7 @@ describe("module configuration declarations", () => {
     "valueOf",
   ])("rejects the reserved object property name %s as a configuration key", (key) => {
     const result = safeParseModuleManifest({
-      manifestVersion: 7,
+      manifestVersion: 8,
       id: "announcements",
       name: "announcements module",
       version: "1.0.0",
@@ -210,7 +210,7 @@ describe("module configuration declarations", () => {
     "",
   ])("rejects the malformed configuration key %s", (key) => {
     const result = safeParseModuleManifest({
-      manifestVersion: 7,
+      manifestVersion: 8,
       id: "announcements",
       name: "announcements module",
       version: "1.0.0",
@@ -591,7 +591,7 @@ describe("configuration over a real discovered inventory", () => {
       writeFile(
         path.join(moduleDirectory, "ekklesia.module.json"),
         JSON.stringify({
-          manifestVersion: 7,
+          manifestVersion: 8,
           id,
           name: `${id} module`,
           version: "1.0.0",

core/tests/module-database-abi.test.ts

@@ -0,0 +1,867 @@
+import { readFile } from "node:fs/promises";
+import {
+  isModuleDatabaseError,
+  type ModuleDatabaseErrorCode,
+  type ModuleDatabaseTransaction,
+} from "@ekklesia/contracts";
+import { DatabaseError, type Pool } from "pg";
+import { describe, expect, it, vi } from "vitest";
+import {
+  createModuleDatabaseExecutor,
+  moduleDatabaseExecutorModuleId,
+} from "../src/modules/database-abi.js";
+import {
+  decodeModuleDatabaseValue,
+  encodeModuleDatabaseParameters,
+  MODULE_DATABASE_MAX_PARAMETERS,
+  parsePostgresArrayText,
+} from "../src/modules/database-abi-values.js";
+
+/**
+ * Module Database ABI v1 (ADR 0050) without a database: parameter validation and encoding, result
+ * decoding from PostgreSQL text, option validation, error sanitization, and scope bookkeeping.
+ *
+ * Everything that depends on PostgreSQL's own behaviour (type OIDs, the protocol, SQLSTATEs,
+ * transactions, savepoints, session settings) is proven against a real database in
+ * `module-database-abi.integration.ts`. The scripted client here only replays command tags and
+ * transaction status, so the executor's own bookkeeping can be observed statement by statement.
+ */
+
+async function rejection(promise: Promise<unknown>): Promise<unknown> {
+  try {
+    await promise;
+  } catch (error) {
+    return error;
+  }
+  throw new Error("Expected the operation to reject.");
+}
+
+async function expectAbiError(
+  promise: Promise<unknown>,
+  code: ModuleDatabaseErrorCode,
+  sqlState?: string,
+): Promise<void> {
+  const error = await rejection(promise);
+  expect(isModuleDatabaseError(error)).toBe(true);
+  expect(error).toMatchObject({ code });
+  expect((error as { sqlState?: string }).sqlState).toBe(sqlState);
+}
+
+function syncThrows(run: () => unknown): unknown {
+  try {
+    run();
+  } catch (error) {
+    return error;
+  }
+  throw new Error("Expected the call to throw.");
+}
+
+// --- Parameters --------------------------------------------------------------------------------
+
+describe("encodeModuleDatabaseParameters", () => {
+  it("encodes every scalar category as text, or bytes, and nothing else", () => {
+    const bytes = new Uint8Array([0, 1, 255]);
+    const encoded = encodeModuleDatabaseParameters([
+      null,
+      true,
+      false,
+      1.5,
+      Number.NaN,
+      Number.POSITIVE_INFINITY,
+      Number.NEGATIVE_INFINITY,
+      9_007_199_254_740_993n,
+      'it\'s \\ "quoted"',
+      bytes,
+    ]);
+    expect(encoded.slice(0, 9)).toEqual([
+      null,
+      "true",
+      "false",
+      "1.5",
+      "NaN",
+      "Infinity",
+      "-Infinity",
+      "9007199254740993",
+      'it\'s \\ "quoted"',
+    ]);
+    expect(Buffer.isBuffer(encoded[9])).toBe(true);
+    expect([...(encoded[9] as Buffer)]).toEqual([0, 1, 255]);
+  });
+
+  it("copies bytes, so a later change by the caller cannot reach the statement", () => {
+    const bytes = new Uint8Array([1, 2, 3]);
+    const view = bytes.subarray(1);
+    const [encoded] = encodeModuleDatabaseParameters([view]);
+    bytes[1] = 9;
+    expect([...(encoded as Buffer)]).toEqual([2, 3]);
+  });
+
+  it("encodes arrays as quoted PostgreSQL array literals, nested for more dimensions", () => {
+    expect(
+      encodeModuleDatabaseParameters([
+        [1, null, 3],
+        ['a"b', "c\\d", "", "NULL", "{,}"],
+        [
+          [1, 2],
+          [3, 4],
+        ],
+        [new Uint8Array([0, 255])],
+        [true, 2n],
+        [],
+      ]),
+    ).toEqual([
+      '{"1",NULL,"3"}',
+      '{"a\\"b","c\\\\d","","NULL","{,}"}',
+      '{{"1","2"},{"3","4"}}',
+      '{"\\\\x00ff"}',
+      '{"true","2"}',
+      "{}",
+    ]);
+  });
+
+  it("treats omitted values as no parameters", () => {
+    expect(encodeModuleDatabaseParameters(undefined)).toEqual([]);
+  });
+
+  class Point {
+    readonly x = 1;
+  }
+
+  const refused: readonly [string, unknown][] = [
+    ["a Date", new Date(0)],
+    ["a plain object", { a: 1 }],
+    ["a null-prototype object", Object.create(null)],
+    ["undefined", undefined],
+    ["a function", () => 1],
+    ["a symbol", Symbol("s")],
+    ["a class instance", new Point()],
+    ["a Map", new Map()],
+    ["another typed array", new Int16Array([1])],
+    ["an ArrayBuffer", new ArrayBuffer(1)],
+    ["a boxed string", new String("x")],
+    ["an array holding a Date", [new Date(0)]],
+    ["an array holding undefined", [1, undefined]],
+    ["an array holding an object", [{ a: 1 }]],
+    // biome-ignore lint/suspicious/noSparseArray: the hole is the case under test.
+    ["a sparse array", [1, , 3]],
+    ["scalars mixed with sub-arrays", [1, [2]]],
+    ["a null where a sub-array belongs", [[1], null]],
+    ["ragged sub-arrays", [[1], [1, 2]]],
+    ["more dimensions than PostgreSQL allows", [[[[[[[1]]]]]]]],
+  ];
+
+  for (const [label, value] of refused) {
+    it(`refuses ${label}, without naming the value`, () => {
+      const error = syncThrows(() => encodeModuleDatabaseParameters(["fine", value]));
+      expect(isModuleDatabaseError(error)).toBe(true);
+      expect(error).toMatchObject({ code: "MODULE_DATABASE_PARAMETER_INVALID" });
+      expect((error as Error).message).not.toMatch(/fine|1970|Point|Symbol/u);
+    });
+  }
+
+  it("accepts exactly PostgreSQL's six array dimensions", () => {
+    expect(encodeModuleDatabaseParameters([[[[[[[1]]]]]]])).toEqual(['{{{{{{"1"}}}}}}']);
+  });
+
+  it("refuses a values list that is not an array, or longer than the protocol allows", () => {
+    for (const values of [
+      "x",
+      { 0: "x", length: 1 },
+      new Array(MODULE_DATABASE_MAX_PARAMETERS + 1).fill(1),
+    ]) {
+      const error = syncThrows(() => encodeModuleDatabaseParameters(values));
+      expect(error).toMatchObject({ code: "MODULE_DATABASE_PARAMETER_INVALID" });
+    }
+    expect(
+      encodeModuleDatabaseParameters(new Array(MODULE_DATABASE_MAX_PARAMETERS).fill(1)),
+    ).toHaveLength(MODULE_DATABASE_MAX_PARAMETERS);
+  });
+
+  it("refuses a self-referencing array instead of recursing forever", () => {
+    const cyclic: unknown[] = [];
+    cyclic.push(cyclic);
+    expect(syncThrows(() => encodeModuleDatabaseParameters([cyclic]))).toMatchObject({
+      code: "MODULE_DATABASE_PARAMETER_INVALID",
+    });
+  });
+});
+
+// --- Results -----------------------------------------------------------------------------------
+
+describe("decodeModuleDatabaseValue", () => {
+  it("decodes the scalar types the table names, and keeps everything else as exact text", () => {
+    expect(decodeModuleDatabaseValue(16, "t")).toBe(true);
+    expect(decodeModuleDatabaseValue(16, "f")).toBe(false);
+    expect(decodeModuleDatabaseValue(21, "-32768")).toBe(-32_768);
+    expect(decodeModuleDatabaseValue(23, "2147483647")).toBe(2_147_483_647);
+    expect(decodeModuleDatabaseValue(26, "4294967295")).toBe(4_294_967_295);
+    expect(decodeModuleDatabaseValue(700, "1.5")).toBe(1.5);
+    expect(decodeModuleDatabaseValue(701, "NaN")).toBeNaN();
+    expect(decodeModuleDatabaseValue(701, "Infinity")).toBe(Number.POSITIVE_INFINITY);
+    expect(decodeModuleDatabaseValue(701, "-Infinity")).toBe(Number.NEGATIVE_INFINITY);
+    expect(decodeModuleDatabaseValue(701, "1e+300")).toBe(1e300);
+    // Precision-sensitive and zone-sensitive types stay exactly as PostgreSQL wrote them.
+    expect(decodeModuleDatabaseValue(20, "9223372036854775807")).toBe("9223372036854775807");
+    expect(decodeModuleDatabaseValue(1700, "0.1000000000000000000001")).toBe(
+      "0.1000000000000000000001",
+    );
+    expect(decodeModuleDatabaseValue(3802, '{"a": 12345678901234567890}')).toBe(
+      '{"a": 12345678901234567890}',
+    );
+    expect(decodeModuleDatabaseValue(1184, "2026-10-07 12:00:00+00")).toBe(
+      "2026-10-07 12:00:00+00",
+    );
+    // An unknown OID (an enum, a domain, an extension type) is text.
+    expect(decodeModuleDatabaseValue(987_654, "anything")).toBe("anything");
+  });
+
+  it("decodes bytea to a plain Uint8Array, from hex or the older escape form", () => {
+    const hex = decodeModuleDatabaseValue(17, "\\x00ff10");
+    expect(Object.getPrototypeOf(hex)).toBe(Uint8Array.prototype);
+    expect([...(hex as Uint8Array)]).toEqual([0, 255, 16]);
+    expect([...(decodeModuleDatabaseValue(17, "\\x") as Uint8Array)]).toEqual([]);
+    const escaped = decodeModuleDatabaseValue(17, "a\\000\\\\\\377");
+    expect([...(escaped as Uint8Array)]).toEqual([97, 0, 92, 255]);
+  });
+
+  it("decodes built-in arrays element by element", () => {
+    expect(decodeModuleDatabaseValue(1016, "{1,NULL,9223372036854775807}")).toEqual([
+      "1",
+      null,
+      "9223372036854775807",
+    ]);
+    expect(decodeModuleDatabaseValue(1231, "{1.10,2}")).toEqual(["1.10", "2"]);
+    expect(decodeModuleDatabaseValue(1000, "{t,f}")).toEqual([true, false]);
+    expect(decodeModuleDatabaseValue(1007, "{{1,2},{3,4}}")).toEqual([
+      [1, 2],
+      [3, 4],
+    ]);
+    const bytes = decodeModuleDatabaseValue(1001, '{"\\\\x00ff"}') as Uint8Array[];
+    expect([...(bytes[0] as Uint8Array)]).toEqual([0, 255]);
+    expect(decodeModuleDatabaseValue(1009, "{}")).toEqual([]);
+    // An array of a type the table does not know arrives as text, like the type itself.
+    expect(decodeModuleDatabaseValue(987_655, "{a,b}")).toBe("{a,b}");
+  });
+});
+
+describe("parsePostgresArrayText", () => {
+  const text = (value: string) => value;
+
+  it('honours quoting, escapes, and the difference between NULL and "NULL"', () => {
+    expect(parsePostgresArrayText('{"a\\"b","c,d",NULL,"NULL","","{}",null}', text)).toEqual([
+      'a"b',
+      "c,d",
+      null,
+      "NULL",
+      "",
+      "{}",
+      null,
+    ]);
+    expect(parsePostgresArrayText('{"back\\\\slash"}', text)).toEqual(["back\\slash"]);
+  });
+
+  it("drops a non-default lower bound: a JavaScript array is a zero-based list", () => {
+    expect(parsePostgresArrayText("[0:1]={5,6}", text)).toEqual(["5", "6"]);
+    expect(parsePostgresArrayText("[1:1][2:3]={{7,8}}", text)).toEqual([["7", "8"]]);
+  });
+
+  it("refuses text that is not an array literal", () => {
+    for (const malformed of ["", "{", "{1", '{"a', "{1}x", "[1:2]{1,2}", "1"]) {
+      expect(() => parsePostgresArrayText(malformed, text)).toThrow();
+    }
+  });
+});
+
+// --- The executor, over a scripted client -------------------------------------------------------
+
+interface ScriptedStatement {
+  readonly text: string;
+  readonly values?: readonly unknown[];
+}
+
+interface Script {
+  readonly pool: Pool;
+  readonly statements: ScriptedStatement[];
+  readonly released: (boolean | undefined)[];
+  /** Resolve a statement only when `release` is called, to model in-flight work. */
+  holdNext(): () => void;
+  failNext(error: unknown): void;
+  /** Fail the next statement whose text is exactly `text`. */
+  failWhen(text: string, error: unknown): void;
+  connectCount(): number;
+}
+
+function commandOf(text: string): string {
+  const word = /^\s*([A-Za-z]+)/u.exec(text)?.[1]?.toUpperCase() ?? "";
+  return word === "END" ? "COMMIT" : word;
+}
+
+/**
+ * A pool whose one client replays PostgreSQL's command tags and transaction status for simple SQL.
+ * It is not PostgreSQL: it exists only so the executor's bookkeeping can be observed.
+ */
+function scriptedPool(): Script {
+  const statements: ScriptedStatement[] = [];
+  const released: (boolean | undefined)[] = [];
+  let status = "I";
+  let connects = 0;
+  let hold: Promise<void> | undefined;
+  let failure: unknown;
+  const failures = new Map<string, unknown>();
+
+  const client = {
+    getTransactionStatus: () => status,
+    on: () => client,
+    removeListener: () => client,
+    async query(config: string | { text: string; values?: unknown[] }) {
+      const text = typeof config === "string" ? config : config.text;
+      statements.push(
+        typeof config === "string" ? { text } : { text, values: config.values ?? [] },
+      );
+      const held = hold;
+      hold = undefined;
+      if (held !== undefined) {
+        await held;
+      }
+      if (failure !== undefined || failures.has(text)) {
+        const error = failure ?? failures.get(text);
+        failure = undefined;
+        failures.delete(text);
+        if (status === "T") {
+          status = "E";
+        }
+        throw error;
+      }
+      const command = commandOf(text);
+      if (command === "BEGIN" || command === "START") {
+        status = "T";
+      } else if (command === "COMMIT" || (command === "ROLLBACK" && !/\bTO\b/iu.test(text))) {
+        const aborted = status === "E";
+        status = "I";
+        return { command: aborted ? "ROLLBACK" : command, fields: [], rowCount: null, rows: [] };
+      }
+      return {
+        command,
+        fields: [{ dataTypeID: 23, name: "n" }],
+        rowCount: 1,
+        rows: [["1"]],
+      };
+    },
+    release: (destroy?: boolean) => {
+      released.push(destroy);
+    },
+  };
+
+  return {
+    connectCount: () => connects,
+    failNext(error) {
+      failure = error;
+    },
+    failWhen(text, error) {
+      failures.set(text, error);
+    },
+    holdNext() {
+      let release!: () => void;
+      hold = new Promise<void>((resolve) => {
+        release = resolve;
+      });
+      return release;
+    },
+    pool: {
+      connect: vi.fn(async () => {
+        connects += 1;
+        return client;
+      }),
+    } as unknown as Pool,
+    released,
+    statements,
+  };
+}
+
+function pgError(code: string): DatabaseError {
+  const error = new DatabaseError(
+    'duplicate key value violates unique constraint "example_secret_key"',
+    100,
+    "error",
+  );
+  error.code = code;
+  error.detail = "Key (secret)=(hunter2) already exists.";
+  error.hint = "a hint";
+  error.table = "example_records";
+  error.constraint = "example_secret_key";
+  return error;
+}
+
+const pin =
+  "SET TimeZone TO 'UTC'; SET DateStyle TO 'ISO, MDY'; SET IntervalStyle TO 'postgres'; SET bytea_output TO 'hex'; SET extra_float_digits TO 1";
+
+function texts(script: Script): string[] {
+  return script.statements.map((statement) => statement.text);
+}
+
+describe("createModuleDatabaseExecutor", () => {
+  it("builds a frozen executor holding exactly the ABI's members, without touching the pool", () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    expect(Object.keys(executor).sort()).toEqual(["abiVersion", "query", "transaction"]);
+    expect(executor.abiVersion).toBe(1);
+    expect(Object.isFrozen(executor)).toBe(true);
+    expect(Object.getPrototypeOf(executor)).toBe(Object.prototype);
+    for (const forbidden of ["pool", "client", "$client", "_", "session", "dialect", "select"]) {
+      expect(forbidden in executor).toBe(false);
+    }
+    expect(script.connectCount()).toBe(0);
+  });
+
+  it("carries its module for Core's attribution, and refuses an invalid module ID", () => {
+    const executor = createModuleDatabaseExecutor(scriptedPool().pool, { moduleId: "care-team" });
+    expect(moduleDatabaseExecutorModuleId(executor)).toBe("care-team");
+    expect(moduleDatabaseExecutorModuleId({})).toBeUndefined();
+    expect(() =>
+      createModuleDatabaseExecutor(scriptedPool().pool, { moduleId: "Not A Module" }),
+    ).toThrow(TypeError);
+  });
+
+  it("pins the session, runs one extended-protocol statement, and resets before releasing", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    const result = await executor.query({ text: "SELECT 1 AS n", values: [5n] });
+
+    expect(result).toEqual({
+      command: "SELECT",
+      fields: [{ name: "n", typeOid: 23 }],
+      rowCount: 1,
+      rows: [{ n: 1 }],
+    });
+    expect(texts(script)).toEqual([pin, "SELECT 1 AS n", "DISCARD ALL"]);
+    expect(script.statements[1]).toEqual({ text: "SELECT 1 AS n", values: ["5"] });
+    expect(script.released).toEqual([undefined]);
+    expect(Object.isFrozen(result)).toBe(true);
+    expect(Object.isFrozen(result.rows)).toBe(true);
+    expect(Object.isFrozen(result.fields)).toBe(true);
+  });
+
+  it("refuses a malformed request before borrowing a connection", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    const query = executor.query as (request: unknown) => Promise<unknown>;
+
+    for (const request of [
+      undefined,
+      null,
+      "SELECT 1",
+      [],
+      { text: "" },
+      { text: 1 },
+      { text: "SELECT 1", rowMode: "rows" },
+      { text: "SELECT 1", name: "prepared" },
+      { text: "SELECT 1", types: [] },
+    ]) {
+      await expectAbiError(query(request), "MODULE_DATABASE_REQUEST_INVALID");
+    }
+    await expectAbiError(
+      query({ text: "SELECT $1", values: [new Date()] }),
+      "MODULE_DATABASE_PARAMETER_INVALID",
+    );
+    expect(script.connectCount()).toBe(0);
+  });
+
+  it("reports only PostgreSQL's SQLSTATE from a database error, never its text", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    script.failWhen("SELECT 1", pgError("23505"));
+    const error = await rejection(executor.query({ text: "SELECT 1" }));
+
+    expect(error).toMatchObject({ code: "MODULE_DATABASE_QUERY_FAILED", sqlState: "23505" });
+    const serialized = `${JSON.stringify(error)} ${String(error)} ${(error as Error).stack}`;
+    for (const secret of [
+      "hunter2",
+      "example_secret_key",
+      "example_records",
+      "duplicate",
+      "hint",
+    ]) {
+      expect(serialized).not.toContain(secret);
+    }
+    expect((error as Error).cause).toBeUndefined();
+    // A PostgreSQL error leaves the connection usable, so it is reset and returned.
+    expect(script.released).toEqual([undefined]);
+  });
+
+  it("drops a non-PostgreSQL failure's code and destroys the connection it happened on", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    script.failWhen(
+      "SELECT 1",
+      Object.assign(new Error("Connection terminated: postgres://u:p@h/db"), { code: "EPIPE" }),
+    );
+
+    const error = await rejection(executor.query({ text: "SELECT 1" }));
+    expect(error).toMatchObject({ code: "MODULE_DATABASE_QUERY_FAILED" });
+    expect((error as { sqlState?: string }).sqlState).toBeUndefined();
+    expect(JSON.stringify(error)).not.toContain("postgres://");
+    expect(script.released).toEqual([true]);
+  });
+
+  it("refuses a top-level transaction-control statement and destroys a connection it left open", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    await expectAbiError(executor.query({ text: "BEGIN" }), "MODULE_DATABASE_REQUEST_INVALID");
+    expect(script.released).toEqual([true]);
+    expect(texts(script)).not.toContain("DISCARD ALL");
+  });
+});
+
+describe("transaction options", () => {
+  const invalid: readonly unknown[] = [
+    null,
+    "serializable",
+    [],
+    { isolation: "read uncommitted" },
+    { isolation: "SERIALIZABLE" },
+    { isolation: "constructor" },
+    { readOnly: "yes" },
+    { readOnly: 1 },
+    { deferrable: true },
+    { isolation: "serializable", retries: 3 },
+  ];
+
+  for (const options of invalid) {
+    it(`refuses ${JSON.stringify(options)} before borrowing a connection`, async () => {
+      const script = scriptedPool();
+      const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+      const callback = vi.fn();
+      await expectAbiError(
+        executor.transaction(callback, options as never),
+        "MODULE_DATABASE_TRANSACTION_OPTION_INVALID",
+      );
+      expect(callback).not.toHaveBeenCalled();
+      expect(script.connectCount()).toBe(0);
+    });
+  }
+
+  it("refuses a callback that is not a function", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    await expectAbiError(
+      executor.transaction("SELECT 1" as never),
+      "MODULE_DATABASE_REQUEST_INVALID",
+    );
+    expect(script.connectCount()).toBe(0);
+  });
+
+  it("begins every transaction with an explicit isolation level and access mode", async () => {
+    const cases: readonly [unknown, string][] = [
+      [undefined, "BEGIN ISOLATION LEVEL READ COMMITTED READ WRITE"],
+      [{}, "BEGIN ISOLATION LEVEL READ COMMITTED READ WRITE"],
+      [{ readOnly: true }, "BEGIN ISOLATION LEVEL READ COMMITTED READ ONLY"],
+      [{ isolation: "repeatable read" }, "BEGIN ISOLATION LEVEL REPEATABLE READ READ WRITE"],
+      [
+        { isolation: "serializable", readOnly: false },
+        "BEGIN ISOLATION LEVEL SERIALIZABLE READ WRITE",
+      ],
+    ];
+    for (const [options, begin] of cases) {
+      const script = scriptedPool();
+      const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+      await executor.transaction(async () => undefined, options as never);
+      expect(texts(script)).toEqual([pin, begin, "COMMIT", "DISCARD ALL"]);
+    }
+  });
+});
+
+describe("transaction scopes", () => {
+  it("commits a resolved callback and returns its value", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    const value = await executor.transaction(async (tx) => {
+      expect(Object.keys(tx).sort()).toEqual(["abiVersion", "query", "savepoint"]);
+      expect(Object.isFrozen(tx)).toBe(true);
+      expect(moduleDatabaseExecutorModuleId(tx)).toBe("example");
+      await tx.query({ text: "INSERT INTO example_records VALUES (1)" });
+      return "done";
+    });
+
+    expect(value).toBe("done");
+    expect(texts(script).slice(1)).toEqual([
+      "BEGIN ISOLATION LEVEL READ COMMITTED READ WRITE",
+      "INSERT INTO example_records VALUES (1)",
+      "COMMIT",
+      "DISCARD ALL",
+    ]);
+  });
+
+  it("rolls back a rejected callback and rejects with the callback's own error, untouched", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    const own = new Error("module failure");
+
+    const error = await rejection(
+      executor.transaction(async (tx) => {
+        await tx.query({ text: "INSERT INTO example_records VALUES (1)" });
+        throw own;
+      }),
+    );
+
+    expect(error).toBe(own);
+    expect(texts(script)).toContain("ROLLBACK");
+    expect(texts(script)).not.toContain("COMMIT");
+  });
+
+  it("revokes the executor when the callback settles; later use sends nothing", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    let escaped: ModuleDatabaseTransaction | undefined;
+    await executor.transaction((tx) => {
+      escaped = tx;
+    });
+    const sent = script.statements.length;
+
+    await expectAbiError(
+      (escaped as ModuleDatabaseTransaction).query({ text: "SELECT 1" }),
+      "MODULE_DATABASE_SCOPE_CLOSED",
+    );
+    await expectAbiError(
+      (escaped as ModuleDatabaseTransaction).savepoint(async () => undefined),
+      "MODULE_DATABASE_SCOPE_CLOSED",
+    );
+    expect(script.statements).toHaveLength(sent);
+  });
+
+  it("never commits a callback that returned with a query still outstanding, even once it succeeds", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    let forgotten: Promise<unknown> | undefined;
+    let releaseHeld: (() => void) | undefined;
+
+    const outcome = executor.transaction((tx) => {
+      releaseHeld = script.holdNext();
+      forgotten = tx.query({ text: "INSERT INTO example_records VALUES (1)" });
+    });
+    await vi.waitFor(() => expect(releaseHeld).toBeDefined());
+    // Core waits for the started statement to settle before rolling back the connection.
+    await new Promise((resolve) => setTimeout(resolve, 10));
+    expect(texts(script)).not.toContain("ROLLBACK");
+    releaseHeld?.();
+
+    await expectAbiError(outcome, "MODULE_DATABASE_SCOPE_WORK_OUTSTANDING");
+    await expect(forgotten).resolves.toBeDefined();
+    expect(texts(script).slice(-2)).toEqual(["ROLLBACK", "DISCARD ALL"]);
+    expect(texts(script)).not.toContain("COMMIT");
+  });
+
+  it("keeps a rejected callback's own error when sibling work is still settling, and still never commits", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    const own = new Error("module failure");
+    let releaseHeld: (() => void) | undefined;
+
+    const outcome = executor.transaction(async (tx) => {
+      releaseHeld = script.holdNext();
+      void tx.query({ text: "INSERT INTO example_records VALUES (1)" });
+      throw own;
+    });
+    await vi.waitFor(() => expect(releaseHeld).toBeDefined());
+    // The sibling statement is drained before Core rolls back.
+    await new Promise((resolve) => setTimeout(resolve, 10));
+    expect(texts(script)).not.toContain("ROLLBACK");
+    releaseHeld?.();
+
+    expect(await rejection(outcome)).toBe(own);
+    expect(texts(script).slice(-2)).toEqual(["ROLLBACK", "DISCARD ALL"]);
+    expect(texts(script)).not.toContain("COMMIT");
+  });
+
+  it("refuses a transaction-control statement inside a transaction and never commits it", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    const error = await rejection(
+      executor.transaction(async (tx) => {
+        await expectAbiError(
+          tx.query({ text: "SAVEPOINT mine" }),
+          "MODULE_DATABASE_REQUEST_INVALID",
+        );
+        return "carried on";
+      }),
+    );
+
+    expect(error).toMatchObject({ code: "MODULE_DATABASE_REQUEST_INVALID" });
+    expect(texts(script)).not.toContain("COMMIT");
+    expect(texts(script)).toContain("ROLLBACK");
+    // The connection is destroyed, never reset and reused.
+    expect(texts(script)).not.toContain("DISCARD ALL");
+    expect(script.released).toEqual([true]);
+  });
+
+  it("reports a COMMIT that PostgreSQL answered with ROLLBACK as a failed transaction", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    const outcome = executor.transaction(async (tx) => {
+      script.failNext(pgError("22012"));
+      await expectAbiError(
+        tx.query({ text: "SELECT 1/0" }),
+        "MODULE_DATABASE_QUERY_FAILED",
+        "22012",
+      );
+    });
+
+    await expectAbiError(outcome, "MODULE_DATABASE_TRANSACTION_FAILED");
+  });
+});
+
+describe("savepoint scopes", () => {
+  it("names savepoints itself, releases a resolved one, and rolls back a rejected one", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    const own = new Error("savepoint failure");
+
+    await executor.transaction(async (tx) => {
+      await tx.savepoint(async (sp) => {
+        await sp.query({ text: "INSERT INTO example_records VALUES (1)" });
+      });
+      expect(await rejection(tx.savepoint(async () => Promise.reject(own)))).toBe(own);
+    });
+
+    expect(texts(script).slice(2, -2)).toEqual([
+      "SAVEPOINT ekklesia_savepoint_1",
+      "INSERT INTO example_records VALUES (1)",
+      "RELEASE SAVEPOINT ekklesia_savepoint_1",
+      "SAVEPOINT ekklesia_savepoint_2",
+      "ROLLBACK TO SAVEPOINT ekklesia_savepoint_2",
+      "RELEASE SAVEPOINT ekklesia_savepoint_2",
+    ]);
+  });
+
+  it("makes the parent inactive while a savepoint is open, so scopes cannot overlap", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    await executor.transaction(async (tx) => {
+      await tx.savepoint(async (sp) => {
+        await expectAbiError(tx.query({ text: "SELECT 1" }), "MODULE_DATABASE_SCOPE_INACTIVE");
+        await expectAbiError(
+          tx.savepoint(async () => undefined),
+          "MODULE_DATABASE_SCOPE_INACTIVE",
+        );
+        await sp.savepoint(async (inner) => {
+          await expectAbiError(sp.query({ text: "SELECT 1" }), "MODULE_DATABASE_SCOPE_INACTIVE");
+          await inner.query({ text: "SELECT 2" });
+        });
+        await sp.query({ text: "SELECT 3" });
+      });
+      await tx.query({ text: "SELECT 4" });
+    });
+
+    expect(texts(script)).toContain("SAVEPOINT ekklesia_savepoint_2");
+    expect(texts(script)).toContain("COMMIT");
+  });
+
+  it("revokes an escaped savepoint executor", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    await executor.transaction(async (tx) => {
+      let escaped: ModuleDatabaseTransaction | undefined;
+      await tx.savepoint((sp) => {
+        escaped = sp;
+      });
+      await expectAbiError(
+        (escaped as ModuleDatabaseTransaction).query({ text: "SELECT 1" }),
+        "MODULE_DATABASE_SCOPE_CLOSED",
+      );
+      await tx.query({ text: "SELECT 2" });
+    });
+    expect(texts(script)).toContain("COMMIT");
+  });
+
+  it("rolls back, and never releases, a savepoint whose callback left work outstanding", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+
+    await executor.transaction(async (tx) => {
+      await expectAbiError(
+        tx.savepoint((sp) => {
+          const release = script.holdNext();
+          void sp.query({ text: "INSERT INTO example_records VALUES (1)" });
+          setTimeout(release, 10);
+        }),
+        "MODULE_DATABASE_SCOPE_WORK_OUTSTANDING",
+      );
+    });
+
+    expect(texts(script).slice(2, -2)).toEqual([
+      "SAVEPOINT ekklesia_savepoint_1",
+      "INSERT INTO example_records VALUES (1)",
+      "ROLLBACK TO SAVEPOINT ekklesia_savepoint_1",
+    ]);
+  });
+
+  it("keeps a rejected savepoint callback's own error, rolling back and releasing after its sibling work settles", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    const own = new Error("savepoint failure");
+
+    await executor.transaction(async (tx) => {
+      const error = await rejection(
+        tx.savepoint(async (sp) => {
+          const release = script.holdNext();
+          void sp.query({ text: "INSERT INTO example_records VALUES (1)" });
+          setTimeout(release, 10);
+          throw own;
+        }),
+      );
+      expect(error).toBe(own);
+    });
+
+    expect(texts(script).slice(2, -2)).toEqual([
+      "SAVEPOINT ekklesia_savepoint_1",
+      "INSERT INTO example_records VALUES (1)",
+      "ROLLBACK TO SAVEPOINT ekklesia_savepoint_1",
+      "RELEASE SAVEPOINT ekklesia_savepoint_1",
+    ]);
+    expect(texts(script)).toContain("COMMIT");
+  });
+
+  it("counts an unawaited savepoint as the transaction's outstanding work", async () => {
+    const script = scriptedPool();
+    const executor = createModuleDatabaseExecutor(script.pool, { moduleId: "example" });
+    let forgotten: Promise<unknown> | undefined;
+
+    await expectAbiError(
+      executor.transaction((tx) => {
+        forgotten = tx.savepoint(async (sp) => {
+          await sp.query({ text: "INSERT INTO example_records VALUES (1)" });
+        });
+      }),
+      "MODULE_DATABASE_SCOPE_WORK_OUTSTANDING",
+    );
+    await expectAbiError(forgotten as Promise<unknown>, "MODULE_DATABASE_SCOPE_CLOSED");
+    expect(texts(script)).not.toContain("COMMIT");
+    expect(texts(script).filter((text) => text.startsWith("RELEASE"))).toEqual([]);
+    expect(texts(script).at(-1)).toBe("DISCARD ALL");
+  });
+});
+
+describe("the ABI's own sources", () => {
+  it("import no ORM, query builder, or ORM type", async () => {
+    for (const file of [
+      "../src/modules/database-abi.ts",
+      "../src/modules/database-abi-values.ts",
+    ]) {
+      const source = await readFile(new URL(file, import.meta.url), "utf8");
+      const specifiers = [...source.matchAll(/\bfrom\s+"([^"]+)"/gu)].map((match) => match[1]);
+      expect(
+        specifiers.every((specifier) =>
+          ["@ekklesia/contracts", "pg", "./database-abi-values.js"].includes(specifier ?? ""),
+        ),
+      ).toBe(true);
+      expect(source).not.toMatch(/drizzle|kysely|NodePg|PgTable|PgColumn/iu);
+    }
+  });
+});

core/tests/module-database-type.test.ts

@@ -1,8 +1,8 @@
 import { integer, pgTable, text } from "drizzle-orm/pg-core";
 import { describe, expect, it } from "vitest";
-import type { ModuleDatabase, ModuleRuntimeServices } from "../src/index.js";
+import type { LegacyModuleRuntimeServices, ModuleDatabase } from "../src/modules/database.js";
 
-const testTable = pgTable("contracts_module_database_test", {
+const testTable = pgTable("core_module_database_type_test", {
   id: integer("id").primaryKey(),
   name: text("name").notNull(),
 });
@@ -68,16 +68,17 @@ function typeOnlyExclusions(database: ModuleDatabase): void {
 }
 void typeOnlyExclusions;
 
-/** Never invoked — proves `ModuleRuntimeServices` has exactly one field, `database`, typed as
- * `ModuleDatabase`, with no storage/jobs/configuration/secrets/authorization field this phase. */
-function typeOnlyServicesShape(services: ModuleRuntimeServices): void {
+/** Never invoked — proves a legacy module's `ModuleRuntimeServices` has exactly one field,
+ * `database`, typed as `ModuleDatabase`, with no storage/jobs/configuration/secrets/authorization
+ * field this phase. */
+function typeOnlyServicesShape(services: LegacyModuleRuntimeServices): void {
   const database: ModuleDatabase = services.database;
   void database;
-  // @ts-expect-error `storage` does not exist on `ModuleRuntimeServices` yet.
+  // @ts-expect-error `storage` does not exist on the services yet.
   void services.storage;
-  // @ts-expect-error `jobs` does not exist on `ModuleRuntimeServices` yet.
+  // @ts-expect-error `jobs` does not exist on the services yet.
   void services.jobs;
-  // @ts-expect-error `authorization` does not exist on `ModuleRuntimeServices` yet.
+  // @ts-expect-error `authorization` does not exist on the services yet.
   void services.authorization;
 }
 void typeOnlyServicesShape;

core/tests/module-discovery.test.ts

@@ -4,8 +4,12 @@ import path from "node:path";
 import { afterEach, describe, expect, it } from "vitest";
 import {
   discoverModules,
+  isReservedModuleId,
   ModuleDiscoveryError,
   type ModuleDiscoveryIssueCode,
+  RESERVED_MODULE_IDS,
+  RESERVED_SETTINGS_NAMES,
+  RESERVED_TOP_LEVEL_NAMES,
 } from "../src/modules/index.js";
 
 interface ModuleFixtureOptions {
@@ -34,7 +38,7 @@ async function createModulesDirectory(): Promise<string> {
 
 function manifestFor(id: string): Record<string, unknown> {
   return {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
@@ -271,6 +275,89 @@ describe("module discovery", () => {
     );
   });
 
+  it("rejects a module whose id is one of the platform's reserved top-level names (ADR 0057)", async () => {
+    // Every module with a Dashboard UI is addressed at `/<module-id>`, so an id equal to a
+    // platform-owned top-level namespace would collide with the API, the display host, a host
+    // script, or a Dashboard page.
+    expect(RESERVED_TOP_LEVEL_NAMES).toEqual(["account", "api", "assets", "display", "settings"]);
+    // A module's settings live at `/settings/<module-id>` (ADR 0061), beside the platform's own
+    // Settings sections, so their names are reserved too.
+    expect(RESERVED_SETTINGS_NAMES).toEqual([
+      "branding",
+      "discover",
+      "displays",
+      "general",
+      "system",
+    ]);
+    expect(RESERVED_MODULE_IDS).toEqual([
+      "account",
+      "api",
+      "assets",
+      "branding",
+      "discover",
+      "display",
+      "displays",
+      "general",
+      "settings",
+      "system",
+    ]);
+    for (const list of [RESERVED_MODULE_IDS, RESERVED_TOP_LEVEL_NAMES, RESERVED_SETTINGS_NAMES]) {
+      expect(Object.isFrozen(list)).toBe(true);
+    }
+
+    for (const id of RESERVED_MODULE_IDS) {
+      const modulesDirectory = await createModulesDirectory();
+      await createModule(modulesDirectory, id);
+
+      const error = await discoveryError(modulesDirectory);
+
+      expect(error.issues, id).toEqual([
+        expect.objectContaining({
+          code: "MODULE_ID_RESERVED",
+          moduleDirectory: id,
+          moduleId: id,
+          path: "id",
+        }),
+      ]);
+    }
+  });
+
+  it("accepts ids that merely resemble a reserved name", async () => {
+    const modulesDirectory = await createModulesDirectory();
+    // `modules` is an ordinary id again: module management is Settings → Discover.
+    for (const id of [
+      "settings-sync",
+      "my-account",
+      "display-board",
+      "api-docs",
+      "general-info",
+      "modules",
+      "discovery",
+      "systems",
+    ]) {
+      await createModule(modulesDirectory, id);
+    }
+
+    const modules = await discoverModules({
+      moduleSdkVersion: "0.1.0",
+      modulesDirectory,
+      platformVersion: "0.1.0",
+    });
+
+    expect(modules.map((module) => module.manifest.id).sort()).toEqual([
+      "api-docs",
+      "discovery",
+      "display-board",
+      "general-info",
+      "modules",
+      "my-account",
+      "settings-sync",
+      "systems",
+    ]);
+    expect(isReservedModuleId("settings")).toBe(true);
+    expect(isReservedModuleId("settings-sync")).toBe(false);
+  });
+
   it("enforces platform and Module SDK compatibility", async () => {
     const modulesDirectory = await createModulesDirectory();
     await createModule(modulesDirectory, "future", {

core/tests/module-http-import.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it, vi } from "vitest";
+import { IMPORT_SAFETY_TEST_TIMEOUT_MS } from "./support/import-safety.js";
 
 const readdir = vi.fn();
 const readFile = vi.fn();
@@ -14,13 +15,17 @@ vi.mock("node:fs/promises", async (importOriginal) => ({
 }));
 
 describe("module HTTP contract and runtime import safety", () => {
-  it("performs no filesystem I/O merely by importing the module runtime or the module-http contract", async () => {
-    await import("../src/modules/index.js");
-    await import("@ekklesia/contracts");
+  it(
+    "performs no filesystem I/O merely by importing the module runtime or the module-http contract",
+    async () => {
+      await import("../src/modules/index.js");
+      await import("@ekklesia/contracts");
 
-    expect(readdir).not.toHaveBeenCalled();
-    expect(readFile).not.toHaveBeenCalled();
-    expect(realpath).not.toHaveBeenCalled();
-    expect(stat).not.toHaveBeenCalled();
-  });
+      expect(readdir).not.toHaveBeenCalled();
+      expect(readFile).not.toHaveBeenCalled();
+      expect(realpath).not.toHaveBeenCalled();
+      expect(stat).not.toHaveBeenCalled();
+    },
+    IMPORT_SAFETY_TEST_TIMEOUT_MS,
+  );
 });

core/tests/module-lifecycle-store.integration.ts

@@ -182,6 +182,7 @@ async function applyCoreMigrations(url: string): Promise<void> {
       "core:0005_module_configuration",
       "core:0006_device_identity",
       "core:0007_verified_bootstrap_owners",
+      "core:0008_user_preferences",
     ]);
     await applyModuleMigrations({ aggregate, database: createPostgresMigrationDatabase(url) });
   } finally {
@@ -200,7 +201,7 @@ afterAll(async () => {
  * by eligibility resolution. */
 function fakeModule(id: string, dependencies?: Record<string, unknown>): DiscoveredModule {
   const manifest = parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "1.0.0",

core/tests/module-lifecycle.test.ts

@@ -22,7 +22,7 @@ function fakeModule(
   } = {},
 ): DiscoveredModule {
   const manifest = parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
@@ -344,7 +344,7 @@ describe("resolveModuleEligibility — over a real discovered inventory", () =>
       writeFile(
         path.join(moduleDirectory, "ekklesia.module.json"),
         JSON.stringify({
-          manifestVersion: 7,
+          manifestVersion: 8,
           id,
           name: `${id} module`,
           version: "0.1.0",

core/tests/module-migration-discovery.test.ts

@@ -35,9 +35,9 @@ async function createModulesDirectory(): Promise<string> {
 
 function discoveryOptions(modulesDirectory: string) {
   return {
-    moduleSdkVersion: "0.1.0",
+    moduleSdkVersion: "0.2.0",
     modulesDirectory,
-    platformVersion: "0.1.0",
+    platformVersion: "0.2.0",
   };
 }
 

core/tests/module-package-verification.test.ts

@@ -0,0 +1,748 @@
+import { mkdir, mkdtemp, readdir, rm, stat, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { afterEach, describe, expect, it } from "vitest";
+import {
+  currentModulePackageHost,
+  type ModulePackageHost,
+  ModulePackageVerificationError,
+  type ModulePackageVerificationErrorCode,
+  verifyModulePackage,
+} from "../src/modules/index.js";
+import {
+  type FixtureEntry,
+  modulePackageFixture,
+  type PackageFixtureOptions,
+  sha256,
+} from "./support/module-package-fixture.js";
+
+const platform = {
+  databaseRuntime: { "drizzle-orm": "0.45.2" },
+  moduleSdkVersion: "0.2.0",
+  platformVersion: "0.2.0",
+} as const;
+
+const temporaryDirectories: string[] = [];
+
+afterEach(async () => {
+  await Promise.all(
+    temporaryDirectories
+      .splice(0)
+      .map((directory) => rm(directory, { force: true, recursive: true })),
+  );
+});
+
+async function scratch(): Promise<string> {
+  const directory = await mkdtemp(path.join(tmpdir(), "ekklesia-verify-"));
+  temporaryDirectories.push(directory);
+  return directory;
+}
+
+async function archiveFile(options: PackageFixtureOptions = {}): Promise<{
+  readonly archivePath: string;
+  readonly sha256: string;
+}> {
+  const fixture = await modulePackageFixture(options);
+  const archivePath = path.join(await scratch(), "private-host-name-5e1d.tar.gz");
+  await writeFile(archivePath, fixture.archive);
+  return { archivePath, sha256: fixture.sha256 };
+}
+
+async function executionScratch(): Promise<string> {
+  const directory = path.join(await scratch(), "execution");
+  await mkdir(directory);
+  return directory;
+}
+
+async function rejection(
+  options: PackageFixtureOptions,
+  code: ModulePackageVerificationErrorCode,
+  extra: { readonly expectedSha256?: string } = {},
+): Promise<ModulePackageVerificationError> {
+  const { archivePath } = await archiveFile(options);
+  try {
+    await verifyModulePackage({ archivePath, platform, ...extra });
+  } catch (error) {
+    expect(error).toBeInstanceOf(ModulePackageVerificationError);
+    const verificationError = error as ModulePackageVerificationError;
+    expect(verificationError.code).toBe(code);
+    // Sanitized: never the archive's location, a temporary directory, or text from inside it.
+    const rendered = JSON.stringify({ ...verificationError, message: verificationError.message });
+    expect(rendered).not.toContain("private-host-name-5e1d");
+    expect(rendered).not.toContain(tmpdir());
+    expect(rendered).not.toContain("attacker-chosen");
+    return verificationError;
+  }
+  throw new Error(`Expected ${code}.`);
+}
+
+function withEntry(entry: FixtureEntry): PackageFixtureOptions {
+  return { extraEntries: [entry] };
+}
+
+function abiPackage(overrides: PackageFixtureOptions = {}): PackageFixtureOptions {
+  return {
+    manifest: (manifest) => ({ ...manifest, database: { abi: 1 } }),
+    schemaSource: `export default {
+      moduleId: "example",
+      tables: [{ name: "example_records", foreignKeys: [] }]
+    };\n`,
+    serverSource:
+      'export default { database: { abi: 1 }, id: "example", version: "0.1.0", register() {} };\n',
+    ...overrides,
+  };
+}
+
+describe("Module Package v1 verification (ADR 0049)", () => {
+  it("verifies a valid any-target package, its digest, and its module", async () => {
+    const { archivePath, sha256: digest } = await archiveFile();
+    const result = await verifyModulePackage({ archivePath, expectedSha256: digest, platform });
+    expect(result).toEqual({
+      archiveSha256: digest,
+      fileCount: 9,
+      moduleId: "example",
+      target: "any",
+      version: "0.1.0",
+    });
+  });
+
+  it("uses an explicit execution scratch for pure JavaScript and cleans concurrent runs", async () => {
+    const { archivePath } = await archiveFile();
+    const executionScratchDirectory = await executionScratch();
+    const runs = Array.from({ length: 4 }, () =>
+      verifyModulePackage({ archivePath, executionScratchDirectory, platform }),
+    );
+    await expect(Promise.all(runs)).resolves.toHaveLength(4);
+    expect(await readdir(executionScratchDirectory)).toEqual([]);
+  });
+
+  it("cleans its execution scratch after a backend load failure", async () => {
+    const { archivePath } = await archiveFile({
+      serverSource:
+        'import "dependency-not-in-this-package";\nexport default { id: "example", version: "0.1.0" };\n',
+    });
+    const executionScratchDirectory = await executionScratch();
+    await expect(
+      verifyModulePackage({ archivePath, executionScratchDirectory, platform }),
+    ).rejects.toMatchObject({ code: "MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED" });
+    expect(await readdir(executionScratchDirectory)).toEqual([]);
+  });
+
+  it("reports a missing execution scratch as a verifier environment error", async () => {
+    const { archivePath } = await archiveFile();
+    const executionScratchDirectory = path.join(await scratch(), "missing");
+    await expect(
+      verifyModulePackage({ archivePath, executionScratchDirectory, platform }),
+    ).rejects.toMatchObject({
+      code: "MODULE_PACKAGE_VERIFIER_SCRATCH_UNAVAILABLE",
+      message:
+        "The verifier execution scratch directory is missing, not writable, or mounted noexec.",
+    });
+    await expect(stat(executionScratchDirectory)).rejects.toMatchObject({ code: "ENOENT" });
+  });
+
+  it("rejects an unsafe archive before consulting the execution scratch", async () => {
+    const { archivePath } = await archiveFile(
+      withEntry({ path: "example/../attacker-chosen", data: "x" }),
+    );
+    const executionScratchDirectory = path.join(await scratch(), "missing");
+    await expect(
+      verifyModulePackage({ archivePath, executionScratchDirectory, platform }),
+    ).rejects.toMatchObject({ code: "MODULE_PACKAGE_UNSAFE_PATH" });
+    await expect(stat(executionScratchDirectory)).rejects.toMatchObject({ code: "ENOENT" });
+  });
+
+  it("extracts only a verified package, with normalized modes, into a new directory", async () => {
+    const { archivePath } = await archiveFile();
+    const target = path.join(await scratch(), "example");
+    await verifyModulePackage({ archivePath, extractTo: target, platform });
+    const names = (await readdir(target, { recursive: true })).sort();
+    expect(names).toContain("ekklesia.package.json");
+    expect(names).toContain("LICENSE");
+    expect(names).toContain("dist/server/index.js");
+    expect((await stat(target)).mode & 0o7777).toBe(0o755);
+    expect((await stat(path.join(target, "dist", "server", "index.js"))).mode & 0o7777).toBe(0o644);
+
+    const { archivePath: broken } = await archiveFile({ runtimePackage: { name: "x" } });
+    const refused = path.join(await scratch(), "refused");
+    await expect(
+      verifyModulePackage({ archivePath: broken, extractTo: refused, platform }),
+    ).rejects.toBeInstanceOf(ModulePackageVerificationError);
+    await expect(stat(refused)).rejects.toMatchObject({ code: "ENOENT" });
+  });
+
+  it("refuses to extract over an existing directory", async () => {
+    const { archivePath } = await archiveFile();
+    const existing = await scratch();
+    await expect(
+      verifyModulePackage({ archivePath, extractTo: existing, platform }),
+    ).rejects.toMatchObject({ code: "MODULE_PACKAGE_EXTRACTION_FAILED" });
+  });
+
+  it("fails a wrong archive digest", async () => {
+    await rejection({}, "MODULE_PACKAGE_DIGEST_MISMATCH", { expectedSha256: sha256("other") });
+  });
+
+  it("fails a payload whose contents no longer match their digest", async () => {
+    await rejection(
+      {
+        tamper: (files) => {
+          files.set("dist/server/index.js", Buffer.from("export default {}; // attacker-chosen\n"));
+        },
+      },
+      "MODULE_PACKAGE_FILE_MISMATCH",
+    );
+  });
+
+  it("fails a listed file missing from the archive", async () => {
+    await rejection(
+      { tamper: (files) => void files.delete("THIRD_PARTY_NOTICES") },
+      "MODULE_PACKAGE_FILE_MISSING",
+    );
+  });
+
+  it("fails an archive file that is not listed", async () => {
+    await rejection(
+      withEntry({ path: "example/attacker-chosen.js", data: "extra" }),
+      "MODULE_PACKAGE_FILE_UNLISTED",
+    );
+  });
+
+  it.each([
+    ["a missing license declaration", undefined],
+    ["an empty license declaration", ""],
+    ["UNLICENSED", "UNLICENSED"],
+    ["a malformed SPDX expression", "MIT OR"],
+  ])("fails package metadata with %s", async (_label, license) => {
+    await rejection(
+      {
+        metadata: (metadata) => {
+          const changed: Record<string, unknown> = { ...metadata, license };
+          if (license === undefined) {
+            delete changed.license;
+          }
+          return changed;
+        },
+      },
+      "MODULE_PACKAGE_METADATA_INVALID",
+    );
+  });
+
+  it("fails closed on pre-ADR-0051 metadata", async () => {
+    await rejection(
+      {
+        metadata: (metadata) => {
+          const old: Record<string, unknown> = { ...metadata };
+          delete old.license;
+          return old;
+        },
+      },
+      "MODULE_PACKAGE_METADATA_INVALID",
+    );
+  });
+
+  it("requires LICENSE at the canonical path in both payload and inventory", async () => {
+    await rejection(
+      { tamper: (files) => void files.delete("LICENSE") },
+      "MODULE_PACKAGE_FILE_MISSING",
+    );
+    await rejection(
+      {
+        metadata: (metadata) => ({
+          ...metadata,
+          files: (metadata.files as { path: string }[]).filter((file) => file.path !== "LICENSE"),
+        }),
+      },
+      "MODULE_PACKAGE_METADATA_INVALID",
+    );
+    await rejection(
+      withEntry({ path: "example/licenses/LICENSE", data: "attacker-chosen" }),
+      "MODULE_PACKAGE_FILE_UNLISTED",
+    );
+    await rejection(
+      withEntry({ path: "example/COPYING", data: "attacker-chosen" }),
+      "MODULE_PACKAGE_FILE_UNLISTED",
+    );
+  });
+
+  it("checks the listed LICENSE bytes, size, and digest", async () => {
+    await rejection(
+      { tamper: (files) => files.set("LICENSE", Buffer.from("attacker-chosen")) },
+      "MODULE_PACKAGE_FILE_MISMATCH",
+    );
+    await rejection(
+      {
+        metadata: (metadata) => ({
+          ...metadata,
+          files: (metadata.files as { path: string; size: number; sha256: string }[]).map((file) =>
+            file.path === "LICENSE" ? { ...file, size: file.size + 1 } : file,
+          ),
+        }),
+      },
+      "MODULE_PACKAGE_FILE_MISMATCH",
+    );
+  });
+
+  it("rejects a duplicate LICENSE archive entry", async () => {
+    await rejection(
+      withEntry({ path: "example/LICENSE", data: "attacker-chosen" }),
+      "MODULE_PACKAGE_LAYOUT_INVALID",
+    );
+  });
+
+  it("fails when the manifest and the package disagree about the version", async () => {
+    await rejection(
+      { manifest: (manifest) => ({ ...manifest, version: "0.2.0" }) },
+      "MODULE_PACKAGE_IDENTITY_MISMATCH",
+    );
+  });
+
+  it("fails when the metadata names another module", async () => {
+    await rejection(
+      { metadata: (metadata) => ({ ...metadata, module: { id: "other", version: "0.1.0" } }) },
+      "MODULE_PACKAGE_IDENTITY_MISMATCH",
+    );
+  });
+
+  it("fails a runtime package.json that is not the generated shape", async () => {
+    await rejection(
+      {
+        runtimePackage: {
+          name: "@test/module-example",
+          version: "0.1.0",
+          private: true,
+          type: "module",
+          ekklesia: { layer: "module" },
+          dependencies: { "@ekklesia/module-sdk": "workspace:*" },
+        },
+      },
+      "MODULE_PACKAGE_RUNTIME_PACKAGE_INVALID",
+    );
+  });
+
+  it("fails an unsupported package format", async () => {
+    await rejection(
+      { metadata: (metadata) => ({ ...metadata, packageFormat: 2 }) },
+      "MODULE_PACKAGE_FORMAT_UNSUPPORTED",
+    );
+  });
+
+  it("fails transitional metadata it does not understand", async () => {
+    await rejection(
+      { metadata: (metadata) => ({ ...metadata, transitional: { orm: { prisma: "6.0.0" } } }) },
+      "MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED",
+    );
+    await rejection(
+      {
+        metadata: (metadata) => ({
+          ...metadata,
+          transitional: { databaseRuntime: { "drizzle-orm": "0.45.2", prisma: "6.0.0" } },
+        }),
+      },
+      "MODULE_PACKAGE_TRANSITIONAL_UNSUPPORTED",
+    );
+  });
+
+  it("enforces today's database runtime agreement, and accepts it when it holds", async () => {
+    await rejection(
+      {
+        metadata: (metadata) => ({
+          ...metadata,
+          transitional: { databaseRuntime: { "drizzle-orm": "0.44.0" } },
+        }),
+      },
+      "MODULE_PACKAGE_DATABASE_RUNTIME_INCOMPATIBLE",
+    );
+    const { archivePath } = await archiveFile({
+      metadata: (metadata) => ({
+        ...metadata,
+        transitional: { databaseRuntime: { "drizzle-orm": "0.45.2" } },
+      }),
+    });
+    await expect(verifyModulePackage({ archivePath, platform })).resolves.toMatchObject({
+      moduleId: "example",
+    });
+  });
+
+  it("verifies ABI-v1 plain schema metadata without comparing Drizzle with Core", async () => {
+    const { archivePath } = await archiveFile(abiPackage());
+
+    await expect(
+      verifyModulePackage({
+        archivePath,
+        platform: { ...platform, databaseRuntime: { "drizzle-orm": "99.0.0" } },
+      }),
+    ).resolves.toMatchObject({ moduleId: "example" });
+  });
+
+  it("rejects transitional database runtime metadata from an ABI-v1 package", async () => {
+    await rejection(
+      abiPackage({
+        metadata: (metadata) => ({
+          ...metadata,
+          transitional: { databaseRuntime: { "drizzle-orm": "0.45.2" } },
+        }),
+      }),
+      "MODULE_PACKAGE_DATABASE_RUNTIME_UNEXPECTED",
+    );
+  });
+
+  it("rejects an unsupported database ABI and malformed ABI-v1 schema metadata", async () => {
+    await rejection(
+      abiPackage({ manifest: (manifest) => ({ ...manifest, database: { abi: 2 } }) }),
+      "MODULE_PACKAGE_MANIFEST_INVALID",
+    );
+    const schemaError = await rejection(
+      abiPackage({
+        schemaSource:
+          'export default { moduleId: "example", tables: { records: "attacker-chosen" } };\n',
+      }),
+      "MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED",
+    );
+    expect(schemaError.message).not.toContain("attacker-chosen");
+  });
+
+  it("fails a target this platform cannot run", async () => {
+    await rejection(
+      {
+        metadata: (metadata) => ({
+          ...metadata,
+          target: "linux-arm64-musl",
+          runtime: { libcVersion: ">=1.2.0", node: ">=20", nodeApi: 9 },
+        }),
+      },
+      "MODULE_PACKAGE_TARGET_INCOMPATIBLE",
+    );
+  });
+
+  it("fails a native file inside an any-target package", async () => {
+    const native = await modulePackageFixture({
+      tamper: (files) => {
+        files.set("dist/addon.node", Buffer.from([0x7f, 0x45, 0x4c, 0x46]));
+      },
+      metadata: (metadata) => {
+        const files = [
+          ...(metadata.files as { path: string; size: number; sha256: string }[]),
+          {
+            path: "dist/addon.node",
+            size: 4,
+            sha256: sha256(Buffer.from([0x7f, 0x45, 0x4c, 0x46])),
+          },
+        ].sort((left, right) => (left.path < right.path ? -1 : 1));
+        return { ...metadata, files };
+      },
+    });
+    const archivePath = path.join(await scratch(), "native.tar.gz");
+    await writeFile(archivePath, native.archive);
+    await expect(verifyModulePackage({ archivePath, platform })).rejects.toMatchObject({
+      code: "MODULE_PACKAGE_NATIVE_FILE",
+    });
+  });
+
+  it("fails a package that needs a newer Node.js", async () => {
+    await rejection(
+      { metadata: (metadata) => ({ ...metadata, runtime: { node: ">=99" } }) },
+      "MODULE_PACKAGE_RUNTIME_INCOMPATIBLE",
+    );
+  });
+
+  it("fails an incorporated SDK outside the manifest's own range", async () => {
+    await rejection(
+      {
+        metadata: (metadata) => ({
+          ...metadata,
+          incorporates: { "@ekklesia/module-sdk": "0.9.0" },
+        }),
+      },
+      "MODULE_PACKAGE_SDK_INCOMPATIBLE",
+    );
+  });
+
+  it("fails a module whose declared entrypoint is missing", async () => {
+    await rejection(
+      {
+        manifest: (manifest) => ({
+          ...manifest,
+          version: "0.1.0",
+          entrypoints: {
+            ...(manifest.entrypoints as Record<string, unknown>),
+            schema: "./dist/schema/index.js",
+          },
+        }),
+      },
+      "MODULE_PACKAGE_MODULE_INVALID",
+    );
+  });
+
+  it("fails a backend that imports a dependency the package does not contain", async () => {
+    const error = await rejection(
+      {
+        serverSource:
+          'import pad from "ekklesia-dependency-not-in-this-package";\nexport default { id: "example", version: "0.1.0", register() { pad(); } };\n',
+      },
+      "MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED",
+    );
+    expect(error.message).not.toContain("ekklesia-dependency-not-in-this-package");
+  });
+
+  it("fails a backend whose default export names another module", async () => {
+    await rejection(
+      { serverSource: 'export default { id: "other", version: "0.1.0" };\n' },
+      "MODULE_PACKAGE_ENTRYPOINT_LOAD_FAILED",
+    );
+  });
+
+  it.each([
+    ["an absolute path", { path: "/etc/attacker-chosen", data: "x" }, "MODULE_PACKAGE_UNSAFE_PATH"],
+    [
+      "a .. segment",
+      { path: "example/../attacker-chosen", data: "x" },
+      "MODULE_PACKAGE_UNSAFE_PATH",
+    ],
+    [
+      "a symbolic link",
+      { path: "example/link", type: "symlink", linkname: "/etc/passwd" },
+      "MODULE_PACKAGE_LINK",
+    ],
+    [
+      "a hard link",
+      { path: "example/hard", type: "hardlink", linkname: "example/package.json" },
+      "MODULE_PACKAGE_LINK",
+    ],
+    [
+      "a device node",
+      { path: "example/device", type: "character" },
+      "MODULE_PACKAGE_SPECIAL_ENTRY",
+    ],
+    ["a FIFO", { path: "example/fifo", type: "fifo" }, "MODULE_PACKAGE_SPECIAL_ENTRY"],
+    [
+      "a setuid file",
+      { path: "example/setuid", data: "x", mode: 0o4755 },
+      "MODULE_PACKAGE_UNSAFE_MODE",
+    ],
+    [
+      "a setgid directory",
+      { path: "example/setgid", type: "directory", mode: 0o2755 },
+      "MODULE_PACKAGE_UNSAFE_MODE",
+    ],
+    [
+      "a second top-level directory",
+      { path: "attacker-chosen/file", data: "x" },
+      "MODULE_PACKAGE_LAYOUT_INVALID",
+    ],
+    [
+      "a duplicate entry",
+      { path: "example/package.json", data: "{}" },
+      "MODULE_PACKAGE_LAYOUT_INVALID",
+    ],
+  ] as const)("fails %s", async (_label, entry, code) => {
+    await rejection(withEntry(entry as FixtureEntry), code);
+  });
+
+  it("fails a file that is not a gzip-compressed tar archive", async () => {
+    const archivePath = path.join(await scratch(), "plain.tar.gz");
+    await writeFile(archivePath, "not an archive");
+    await expect(verifyModulePackage({ archivePath, platform })).rejects.toMatchObject({
+      code: "MODULE_PACKAGE_UNREADABLE",
+    });
+  });
+
+  describe("native targets (ADR 0049)", () => {
+    /** The first bytes of a 64-bit little-endian ELF object for `machine` (62 is x86-64). The
+     * verifier reads only the identification and machine fields. */
+    function elfHeader(machine = 62): Buffer {
+      const header = Buffer.alloc(64);
+      Buffer.from([0x7f, 0x45, 0x4c, 0x46, 2, 1, 1]).copy(header);
+      header.writeUInt16LE(3, 16);
+      header.writeUInt16LE(machine, 18);
+      return header;
+    }
+
+    const linuxHost = {
+      arch: "x64",
+      libc: { family: "glibc", version: "2.41" },
+      nodeApi: 10,
+      nodeAbi: "137",
+      platform: "linux",
+    } as const;
+
+    function nativePackage(
+      overrides: {
+        readonly files?: Record<string, Uint8Array | string>;
+        readonly target?: string;
+        readonly runtime?: Record<string, unknown>;
+      } = {},
+    ): PackageFixtureOptions {
+      return {
+        files: overrides.files ?? {
+          "node_modules/native-thing/index.js": "module.exports = {};\n",
+          "node_modules/native-thing/lib/native-thing.node": elfHeader(),
+          "node_modules/native-thing/package.json": '{"name":"native-thing","version":"1.0.0"}\n',
+        },
+        metadata: (metadata) => ({
+          ...metadata,
+          runtime: overrides.runtime ?? {
+            libcVersion: ">=2.28.0",
+            node: ">=20",
+            nodeApi: 9,
+          },
+          target: overrides.target ?? "linux-x64-glibc",
+        }),
+      };
+    }
+
+    async function verifyOn(
+      options: PackageFixtureOptions,
+      host: ModulePackageHost,
+    ): Promise<unknown> {
+      const { archivePath } = await archiveFile(options);
+      return verifyModulePackage({ archivePath, platform: { ...platform, host } });
+    }
+
+    async function refusedOn(
+      options: PackageFixtureOptions,
+      host: ModulePackageHost,
+      code: ModulePackageVerificationErrorCode,
+    ): Promise<void> {
+      await expect(verifyOn(options, host)).rejects.toMatchObject({ code });
+    }
+
+    it("accepts linux-x64-glibc on a matching host, native node_modules and addon included", async () => {
+      await expect(verifyOn(nativePackage(), linuxHost)).resolves.toMatchObject({
+        moduleId: "example",
+        target: "linux-x64-glibc",
+      });
+    });
+
+    it("refuses another operating system, CPU, or C library family", async () => {
+      await refusedOn(
+        nativePackage(),
+        { ...linuxHost, platform: "darwin" },
+        "MODULE_PACKAGE_TARGET_INCOMPATIBLE",
+      );
+      await refusedOn(
+        nativePackage(),
+        { ...linuxHost, arch: "arm64" },
+        "MODULE_PACKAGE_TARGET_INCOMPATIBLE",
+      );
+      // musl reports no glibc version, so the host cannot be proven glibc.
+      const { libc: _libc, ...musl } = linuxHost;
+      await refusedOn(nativePackage(), musl, "MODULE_PACKAGE_TARGET_INCOMPATIBLE");
+    });
+
+    it("refuses a target this platform does not implement", async () => {
+      await refusedOn(
+        nativePackage({ target: "linux-arm64-glibc" }),
+        { ...linuxHost, arch: "arm64" },
+        "MODULE_PACKAGE_TARGET_INCOMPATIBLE",
+      );
+    });
+
+    it("refuses a C library older than the package needs", async () => {
+      await refusedOn(
+        nativePackage(),
+        { ...linuxHost, libc: { family: "glibc", version: "2.17" } },
+        "MODULE_PACKAGE_LIBC_INCOMPATIBLE",
+      );
+      await expect(
+        verifyOn(nativePackage(), { ...linuxHost, libc: { family: "glibc", version: "2.28" } }),
+      ).resolves.toMatchObject({ target: "linux-x64-glibc" });
+    });
+
+    it("refuses a Node-API version or Node.js ABI the host does not provide", async () => {
+      await refusedOn(
+        nativePackage(),
+        { ...linuxHost, nodeApi: 8 },
+        "MODULE_PACKAGE_NODE_API_INCOMPATIBLE",
+      );
+      const { nodeApi: _nodeApi, ...unknownApi } = linuxHost;
+      await refusedOn(nativePackage(), unknownApi, "MODULE_PACKAGE_NODE_API_INCOMPATIBLE");
+      await refusedOn(
+        nativePackage({ runtime: { libcVersion: ">=2.28.0", node: ">=20", nodeAbi: "115" } }),
+        linuxHost,
+        "MODULE_PACKAGE_NODE_API_INCOMPATIBLE",
+      );
+    });
+
+    it("refuses a native file built for another machine, or an addon that is not one", async () => {
+      await refusedOn(
+        nativePackage({
+          files: { "node_modules/native-thing/lib/native-thing.node": elfHeader(183) },
+        }),
+        linuxHost,
+        "MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE",
+      );
+      await refusedOn(
+        nativePackage({
+          files: { "node_modules/native-thing/lib/libthing.so": elfHeader(183) },
+        }),
+        linuxHost,
+        "MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE",
+      );
+      await refusedOn(
+        nativePackage({
+          files: { "node_modules/native-thing/lib/native-thing.node": "not an ELF object" },
+        }),
+        linuxHost,
+        "MODULE_PACKAGE_NATIVE_FILE_INCOMPATIBLE",
+      );
+    });
+
+    it("requires a native package to state its Node.js interface and, on Linux, its C library", async () => {
+      await rejection(
+        nativePackage({ runtime: { libcVersion: ">=2.28.0", node: ">=20" } }),
+        "MODULE_PACKAGE_METADATA_INVALID",
+      );
+      await rejection(
+        nativePackage({ runtime: { node: ">=20", nodeApi: 9 } }),
+        "MODULE_PACKAGE_METADATA_INVALID",
+      );
+    });
+
+    it("keeps any-target packages free of node_modules, addons, and ELF objects", async () => {
+      await rejection(
+        { files: { "node_modules/thing/index.js": "module.exports = {};\n" } },
+        "MODULE_PACKAGE_NATIVE_FILE",
+      );
+      await rejection({ files: { "dist/thing.node": elfHeader() } }, "MODULE_PACKAGE_NATIVE_FILE");
+      await rejection({ files: { "dist/libthing.so": elfHeader() } }, "MODULE_PACKAGE_NATIVE_FILE");
+    });
+
+    it("establishes this host's facts from Node.js alone", () => {
+      const host = currentModulePackageHost();
+      expect(host.platform).toBe(process.platform);
+      expect(host.arch).toBe(process.arch);
+      expect(host.nodeApi).toBe(Number(process.versions.napi));
+      if (process.platform === "linux") {
+        const report = process.report.getReport() as { header?: { glibcVersionRuntime?: string } };
+        expect(host.libc?.version).toBe(report.header?.glibcVersionRuntime);
+      }
+    });
+  });
+
+  it("fails an archive without package metadata", async () => {
+    const fixture = await modulePackageFixture();
+    const { gunzipSync, gzipSync } = await import("node:zlib");
+    // Rebuild without the metadata entry by filtering the fixture through a fresh archive.
+    const archivePath = path.join(await scratch(), "no-metadata.tar.gz");
+    const raw = gunzipSync(fixture.archive);
+    const blocks: Buffer[] = [];
+    for (let offset = 0; offset + 512 <= raw.length; ) {
+      const headerBlock = raw.subarray(offset, offset + 512);
+      if (headerBlock.every((byte) => byte === 0)) {
+        break;
+      }
+      const name = headerBlock.subarray(0, 100).toString("latin1").replace(/\0.*$/su, "");
+      const size = Number.parseInt(headerBlock.subarray(124, 136).toString("latin1"), 8);
+      const length = 512 + Math.ceil(size / 512) * 512;
+      if (!name.endsWith("ekklesia.package.json")) {
+        blocks.push(raw.subarray(offset, offset + length));
+      }
+      offset += length;
+    }
+    await writeFile(archivePath, gzipSync(Buffer.concat([...blocks, Buffer.alloc(1024)])));
+    await expect(verifyModulePackage({ archivePath, platform })).rejects.toMatchObject({
+      code: "MODULE_PACKAGE_METADATA_MISSING",
+    });
+  });
+});

core/tests/module-permissions.test.ts

@@ -3,6 +3,7 @@ import { describe, expect, it } from "vitest";
 import {
   CORE_AUTHORIZATION_GRANTS_MANAGE,
   CORE_DASHBOARD_NAVIGATION_MANAGE,
+  CORE_ACCOUNT_SELF_MANAGE,
   CORE_DEVICES_MANAGE,
   CORE_MODULES_CONFIGURATION_MANAGE,
   CORE_MODULES_LIFECYCLE_MANAGE,
@@ -28,7 +29,7 @@ interface PermissionInput {
  * is read by `composePlatformPermissionRegistry`; the rest exist only to satisfy the type. */
 function fakeModule(id: string, permissions: readonly PermissionInput[] = []): DiscoveredModule {
   const manifest = parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
@@ -75,8 +76,9 @@ describe("composePlatformPermissionRegistry", () => {
     expect(registry.has(CORE_DASHBOARD_NAVIGATION_MANAGE)).toBe(true);
     expect(registry.has(CORE_MODULES_LIFECYCLE_MANAGE)).toBe(true);
     expect(registry.has(CORE_MODULES_CONFIGURATION_MANAGE)).toBe(true);
-    // Core's own five declarations plus one from each module.
-    expect(registry.declarations).toHaveLength(8);
+    expect(registry.has(CORE_ACCOUNT_SELF_MANAGE)).toBe(true);
+    // Core's own seven declarations plus one from each module.
+    expect(registry.declarations).toHaveLength(9);
   });
 
   it("preserves deterministic order: Core first, then modules in the supplied order, then declarations in manifest order", () => {
@@ -97,6 +99,7 @@ describe("composePlatformPermissionRegistry", () => {
       CORE_MODULES_LIFECYCLE_MANAGE,
       CORE_MODULES_CONFIGURATION_MANAGE,
       CORE_DEVICES_MANAGE,
+      CORE_ACCOUNT_SELF_MANAGE,
       "calendar.events.read",
       "calendar.events.write",
       "people.directory.read",

core/tests/module-realtime-runtime.test.ts

@@ -1,11 +1,8 @@
 import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import path from "node:path";
-import type {
-  ModuleDatabase,
-  ModuleRealtimePublisher,
-  ModuleRuntimeServices,
-} from "@ekklesia/contracts";
+import type { ModuleRealtimePublisher } from "@ekklesia/contracts";
+import type { LegacyModuleRuntimeServices, ModuleDatabase } from "../src/modules/database.js";
 import { afterEach, describe, expect, it } from "vitest";
 import { ModuleRuntimeError, startModuleRuntime } from "../src/modules/runtime.js";
 
@@ -22,7 +19,7 @@ afterEach(async () => {
   );
 });
 
-function fakeServices(): ModuleRuntimeServices {
+function fakeServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as ModuleDatabase });
 }
 
@@ -31,7 +28,7 @@ function manifest(
   permissions: readonly Record<string, string>[] = [],
 ): Record<string, unknown> {
   return {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",

core/tests/module-runtime.test.ts

@@ -1,21 +1,23 @@
 import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import path from "node:path";
+import type { ModuleConfiguration, ModuleDatabaseExecutor } from "@ekklesia/contracts";
 import type {
-  ModuleConfiguration,
+  AnyModuleRuntimeServices,
+  LegacyModuleRuntimeServices,
   ModuleDatabase,
-  ModuleRuntimeServices,
-} from "@ekklesia/contracts";
+} from "../src/modules/database.js";
 import { afterEach, describe, expect, it, vi } from "vitest";
 import { discoverModules } from "../src/modules/discovery.js";
-import { resolveModuleEligibility } from "../src/modules/lifecycle.js";
 import {
   ModuleDiscoveryError,
   ModuleRuntimeError,
   type ModuleRuntimeIssueCode,
+  type ModuleRuntimeServicesLookup,
   startDiscoveredModuleRuntime,
   startModuleRuntime,
 } from "../src/modules/index.js";
+import { resolveModuleEligibility } from "../src/modules/lifecycle.js";
 
 vi.mock("../src/modules/discovery.js", async (importOriginal) => {
   const actual = await importOriginal<typeof import("../src/modules/discovery.js")>();
@@ -52,12 +54,13 @@ function manifestFor(
   id: string,
   options: {
     capabilities?: Array<{ id: string; version: string }>;
+    database?: { abi: 1 };
     dependencies?: Record<string, unknown>;
     permissions?: Array<{ id: string; baseline: string; description: string }>;
   } = {},
 ): Record<string, unknown> {
   return {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
@@ -67,6 +70,7 @@ function manifestFor(
     },
     capabilities: options.capabilities ?? [],
     permissions: options.permissions ?? [],
+    ...(options.database ? { database: options.database } : {}),
     ...(options.dependencies ? { dependencies: options.dependencies } : {}),
     entrypoints: {
       server: "./dist/server/index.js",
@@ -145,13 +149,29 @@ function fakeModuleDatabase(): ModuleDatabase {
   }) as unknown as ModuleDatabase;
 }
 
-function fakeModuleRuntimeServices(): ModuleRuntimeServices {
-  return Object.freeze({ database: fakeModuleDatabase() });
+function fakeModuleRuntimeServices(): ModuleRuntimeServicesLookup {
+  const services = new Map<string, LegacyModuleRuntimeServices>();
+  const database = fakeModuleDatabase();
+  return new Proxy(services, {
+    get(target, property, receiver) {
+      if (property === "get") {
+        return (moduleId: string) => {
+          let value = target.get(moduleId);
+          if (!value) {
+            value = Object.freeze({ database });
+            target.set(moduleId, value);
+          }
+          return value;
+        };
+      }
+      return Reflect.get(target, property, receiver);
+    },
+  });
 }
 
 function runtimeOptions(
   modulesDirectory: string,
-  services: ModuleRuntimeServices = fakeModuleRuntimeServices(),
+  services: ModuleRuntimeServicesLookup = fakeModuleRuntimeServices(),
 ) {
   return {
     moduleSdkVersion: "0.1.0",
@@ -1067,6 +1087,54 @@ describe("already-discovered module runtime", () => {
 });
 
 describe("module runtime services", () => {
+  it("delivers only the manifest-selected database mode and distinct ABI executors", async () => {
+    const modulesDirectory = await createModulesDirectory();
+    const recorder = createReferenceRecorder();
+    const legacyDatabase = fakeModuleDatabase();
+    const alphaExecutor = Object.freeze({
+      abiVersion: 1,
+      query: vi.fn(),
+      transaction: vi.fn(),
+    }) as unknown as ModuleDatabaseExecutor;
+    const betaExecutor = Object.freeze({
+      abiVersion: 1,
+      query: vi.fn(),
+      transaction: vi.fn(),
+    }) as unknown as ModuleDatabaseExecutor;
+    const services: ModuleRuntimeServicesLookup = new Map<string, AnyModuleRuntimeServices>([
+      ["legacy", Object.freeze({ database: legacyDatabase })],
+      ["alpha", Object.freeze({ database: alphaExecutor })],
+      ["beta", Object.freeze({ database: betaExecutor })],
+    ]);
+    await createRuntimeModule(modulesDirectory, "legacy", {
+      serverSource: `export default { id: "legacy", version: "0.1.0", start({ services }) { ${recorder.expression}.push(services.database); } };`,
+    });
+    for (const id of ["alpha", "beta"]) {
+      await createRuntimeModule(modulesDirectory, id, {
+        manifest: manifestFor(id, { database: { abi: 1 } }),
+        serverSource: `export default { database: { abi: 1 }, id: ${JSON.stringify(id)}, version: "0.1.0", start({ services }) { ${recorder.expression}.push(services.database); } };`,
+      });
+    }
+
+    const runtime = await startModuleRuntime(runtimeOptions(modulesDirectory, services));
+
+    expect(recorder.values).toEqual([alphaExecutor, betaExecutor, legacyDatabase]);
+    expect("select" in alphaExecutor).toBe(false);
+    expect(alphaExecutor).not.toBe(betaExecutor);
+    await runtime.stop();
+  });
+
+  it("rejects a runtime database declaration that disagrees with its manifest", async () => {
+    const modulesDirectory = await createModulesDirectory();
+    await createRuntimeModule(modulesDirectory, "mismatch", {
+      manifest: manifestFor("mismatch", { database: { abi: 1 } }),
+      serverSource: `export default { id: "mismatch", version: "0.1.0" };`,
+    });
+
+    const error = await captureRuntimeError(modulesDirectory);
+    expect(runtimeIssueCodes(error)).toContain("MODULE_RUNTIME_DATABASE_MISMATCH");
+  });
+
   it("never gives register a services field, and gives start and stop the exact same services object", async () => {
     const modulesDirectory = await createModulesDirectory();
     const services = fakeModuleRuntimeServices();
@@ -1086,11 +1154,11 @@ describe("module runtime services", () => {
 
     expect(registerServices.values).toEqual([undefined]);
     expect(lifecycleServices.values).toHaveLength(2);
-    expect(lifecycleServices.values[0]).toBe(services);
-    expect(lifecycleServices.values[1]).toBe(services);
+    expect(lifecycleServices.values[0]).toBe(services.get("wired"));
+    expect(lifecycleServices.values[1]).toBe(services.get("wired"));
   });
 
-  it("shares the exact same services object identity across every module's start hook", async () => {
+  it("selects a stable services object per module rather than sharing one across modules", async () => {
     const modulesDirectory = await createModulesDirectory();
     const services = fakeModuleRuntimeServices();
     const recorder = createReferenceRecorder();
@@ -1112,7 +1180,8 @@ describe("module runtime services", () => {
 
     const runtime = await startModuleRuntime(runtimeOptions(modulesDirectory, services));
 
-    expect(recorder.values).toEqual([services, services]);
+    expect(recorder.values).toEqual([services.get("alpha"), services.get("beta")]);
+    expect(recorder.values[0]).not.toBe(recorder.values[1]);
     await runtime.stop();
   });
 
@@ -1141,23 +1210,26 @@ describe("module runtime services", () => {
       startModuleRuntime(runtimeOptions(modulesDirectory, services)),
     ).rejects.toBeInstanceOf(ModuleRuntimeError);
 
-    expect(recorder.values).toEqual([services, services]);
+    expect(recorder.values).toEqual([services.get("started"), services.get("started")]);
   });
 
   it("starts and stops a zero-module runtime without ever touching the provided services", async () => {
     const modulesDirectory = await createModulesDirectory();
-    const services = fakeModuleRuntimeServices();
+    const database = fakeModuleDatabase();
+    const services: ModuleRuntimeServicesLookup = new Map([
+      ["unused", Object.freeze({ database })],
+    ]);
 
     const runtime = await startModuleRuntime(runtimeOptions(modulesDirectory, services));
     await runtime.stop();
 
     expect(runtime.modules).toEqual([]);
-    expect(vi.mocked(services.database.select)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.insert)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.update)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.delete)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.execute)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.transaction)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.select)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.insert)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.update)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.delete)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.execute)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.transaction)).not.toHaveBeenCalled();
   });
 });
 
@@ -1463,7 +1535,7 @@ describe("module configuration delivery (ADR 0029)", () => {
     expect(recorder.values).toEqual([["object", []]]);
   });
 
-  it("keeps the services object one shared identity even though configuration is per-module", async () => {
+  it("keeps each module's services object stable while configuration remains per-module", async () => {
     const modulesDirectory = await createModulesDirectory();
     const services = fakeModuleRuntimeServices();
     const recorder = createReferenceRecorder();
@@ -1492,11 +1564,11 @@ describe("module configuration delivery (ADR 0029)", () => {
     await runtime.stop();
 
     const [alphaServices, alphaConfig, bravoServices, bravoConfig] = recorder.values;
-    // This is the reason configuration is a sibling of `services` rather than a field inside it:
-    // `services` is deliberately one shared object for the whole runtime, while configuration must
-    // differ per module. Both properties hold simultaneously.
-    expect(alphaServices).toBe(services);
-    expect(bravoServices).toBe(services);
+    // Configuration remains a sibling of `services`: both are selected per module, but they are
+    // independently composed snapshots with separate contracts and lifetimes.
+    expect(alphaServices).toBe(services.get("alpha"));
+    expect(bravoServices).toBe(services.get("bravo"));
+    expect(alphaServices).not.toBe(bravoServices);
     expect(alphaConfig).not.toBe(bravoConfig);
     expect((alphaConfig as ModuleConfiguration).getString("label")).toBe("alpha");
     expect((bravoConfig as ModuleConfiguration).getString("label")).toBe("bravo");

core/tests/module-schema-discovery.test.ts

@@ -38,10 +38,14 @@ async function createModulesDirectory(): Promise<string> {
 
 function manifestFor(
   id: string,
-  options: { dependencies?: Record<string, unknown>; schema?: string | false } = {},
+  options: {
+    database?: { abi: 1 };
+    dependencies?: Record<string, unknown>;
+    schema?: string | false;
+  } = {},
 ): Record<string, unknown> {
   return {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "0.1.0",
@@ -49,6 +53,7 @@ function manifestFor(
     ...(options.dependencies ? { dependencies: options.dependencies } : {}),
     capabilities: [],
     permissions: [],
+    ...(options.database ? { database: options.database } : {}),
     entrypoints: {
       server: "./dist/server/index.js",
       ...(options.schema === false ? {} : { schema: options.schema ?? "./dist/schema/index.js" }),
@@ -126,6 +131,62 @@ function issueCodes(error: ModuleSchemaDiscoveryError): ModuleSchemaDiscoveryIss
 }
 
 describe("module schema discovery", () => {
+  it("loads ABI-v1 schema entrypoints as plain metadata without importing an ORM", async () => {
+    const modulesDirectory = await createModulesDirectory();
+    await createSchemaModule(modulesDirectory, "calendar", {
+      manifest: manifestFor("calendar", { database: { abi: 1 } }),
+      schemaSource: `
+        export default {
+          moduleId: "calendar",
+          tables: [
+            { name: "calendar_events", foreignKeys: [] },
+            { name: "calendar_attendees", foreignKeys: [{ table: "calendar_events" }] }
+          ]
+        };
+      `,
+    });
+
+    const aggregate = await discoverModuleSchemas(discoveryOptions(modulesDirectory));
+
+    expect(aggregate.tables.map((table) => table.name)).toEqual([
+      "calendar_attendees",
+      "calendar_events",
+    ]);
+    expect(aggregate.tables.every((table) => table.table === undefined)).toBe(true);
+    expect(aggregate.drizzleSchema).toEqual({});
+  });
+
+  it("aggregates ABI-v1 prefix, duplicate, cross-module FK, missing target, and malformed errors", async () => {
+    const modulesDirectory = await createModulesDirectory();
+    await createSchemaModule(modulesDirectory, "alpha", {
+      manifest: manifestFor("alpha", { database: { abi: 1 } }),
+      schemaSource: `export default {
+        moduleId: "alpha",
+        tables: [
+          { name: "wrong_records", foreignKeys: [] },
+          { name: "alpha_records", foreignKeys: [{ table: "beta_records" }] },
+          { name: "alpha_records", foreignKeys: [{ table: "alpha_missing" }] }
+        ]
+      };`,
+    });
+    await createSchemaModule(modulesDirectory, "malformed", {
+      manifest: manifestFor("malformed", { database: { abi: 1 } }),
+      schemaSource: `export default { moduleId: "malformed", tables: [{ name: "malformed_rows", unknown: true }] };`,
+    });
+
+    const error = await captureSchemaError(modulesDirectory);
+
+    expect(issueCodes(error)).toEqual(
+      expect.arrayContaining([
+        "MODULE_SCHEMA_CROSS_MODULE_FOREIGN_KEY",
+        "MODULE_SCHEMA_EXPORT_INVALID",
+        "MODULE_SCHEMA_FOREIGN_KEY_TARGET_MISSING",
+        "MODULE_SCHEMA_TABLE_DUPLICATE",
+        "MODULE_SCHEMA_TABLE_NAMESPACE_INVALID",
+      ]),
+    );
+  });
+
   it("returns a frozen empty aggregate without importing module servers", async () => {
     const modulesDirectory = await createModulesDirectory();
     const recorder = createGlobalEventRecorder();

core/tests/module-storage-lifecycle.test.ts

@@ -18,7 +18,7 @@ function fakeModule(
   } = {},
 ): DiscoveredModule {
   const manifest = parseModuleManifest({
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${id} module`,
     version: "1.0.0",