Merge pull request 'test(api): let a shutdown's closed connections leave pg_stat_activity' (#100) from fix/flaky-shutdown-connection-check into main

Reviewed-on: #100
Reviewed-by: Zayin_Admin <[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
+Ekklesia is a modular, self-hosted church platform. **This repository is the platform** — Core, the
-monorepo:
+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
+  execution, module discovery/lifecycle, devices, and other feature-agnostic services. Core never
-  feature module, a surface, or an app.
+  imports a feature module, a surface, or an app.
-- **Modules** (`modules/*`, template at `templates/module`) are independently versioned product
+- **Modules** are independently versioned product packages. First-party modules live in **their own
-  packages. They own their own data and migrations, declare capabilities/permissions through
+  repositories** (Signage is `Zayin/Signage`), build against the published `@ekklesia/*` packages
-  `@ekklesia/contracts` and `@ekklesia/module-sdk`, and must never import Core, another module, or a
+  (ADR 0053), and reach an installation as a Module Package (ADR 0049) installed into module storage
-  surface directly. Per ADR 0021 a module owns its UI; manifest v7 permits independently optional
+  outside the image (ADR 0048). No module source lives in this repository; `templates/module` is the
-  primary and full-viewport display artifacts, authored in React against the same role-neutral
+  example, and `modules/` is only an optional, ignored local installed-modules directory. A module owns
-  `@ekklesia/module-ui-sdk` ABI. Ekklesia mounts each through a separate surface role, while
+  its data, migrations, and **its own domain UI** (ADR 0021), declares capabilities/permissions through
-  `pnpm boundaries` still rejects every non-React UI framework and non-`.tsx` presentation source.
+  `@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
+  presentation concern a module does not. The shell **hosts** module UI through the generic loader;
-  or module internals directly.
+  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
+- The canonical repositories are on the church Gitea under the `Zayin` organization:
-  change branch-protection settings.
+  `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

README.md

@@ -48,8 +48,34 @@ migration history is retained and reported, and blocks no other migration. A mod
 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. Only the portable `any` target exists
+bundled, and checked by Core's verifier before it is installed. Two targets exist:
-so far. Purge, native-target packages, signing, and any installer or marketplace do not exist yet.
+- 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`,
@@ -506,8 +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
+manifest is version 8 after ADR 0050 added the optional database ABI declaration. Version 8 is a
-browser contributions.
+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
@@ -841,7 +867,7 @@ 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

apps/api/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ekklesia/api",
-  "version": "0.1.2",
+  "version": "0.2.5",
   "license": "AGPL-3.0-or-later",
   "private": true,
   "type": "module",

apps/api/src/app.ts

@@ -1,6 +1,5 @@
 import {
   isAuthenticatedPrincipal,
-  type ModuleRuntimeServices,
   type ModuleSecretSource,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
@@ -13,6 +12,7 @@ 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 +20,7 @@ import type {
   ModuleLifecycleSnapshot,
   ModuleLifecycleStore,
   ModuleRealtimeRegistry,
+  ModuleRuntimeServicesLookup,
   ModuleStorageLookup,
   ModuleUiPublicationRegistry,
 } from "@ekklesia/core/modules";
@@ -30,7 +31,7 @@ import { AUTH_REQUEST_MAX_BODY_BYTES, platformBodyLimit } from "./body-limits.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 { 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 +63,10 @@ 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
+  /** 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`) — reference-identical, never a fresh
+   * module's `start`/`stop` hooks (`apps/api/src/server.ts`) — each handler receives its module's
-   * object built here, so a module's HTTP handlers and lifecycle hooks share exactly one
+   * reference-identical service object, never a fresh facade or executor built per request. */
-   * `ModuleDatabase` for the lifetime of this API runtime. */
+  readonly moduleServices: ModuleRuntimeServicesLookup | AnyModuleRuntimeServices;
-  readonly moduleServices: ModuleRuntimeServices;
   /** 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`
@@ -407,6 +407,12 @@ 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) {

apps/api/src/database.ts

@@ -1,4 +1,4 @@
-import type { ModuleDatabase } from "@ekklesia/contracts";
+import type { ModuleDatabaseExecutor, ModuleId } from "@ekklesia/contracts";
 import {
   type AuthorizationDrizzleDatabase,
   createAuthorizationDrizzleView,
@@ -12,9 +12,11 @@ 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";
 
@@ -24,6 +26,8 @@ export interface ApiDatabaseHandle {
   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;
   /**
@@ -76,6 +80,7 @@ export function createApiDatabase(
     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

@@ -1,11 +1,7 @@
 import type { Socket } from "node:net";
 import path from "node:path";
 import { pathToFileURL } from "node:url";
-import {
+import { EMPTY_MODULE_SECRET_SOURCE, type ModuleSecretSource } from "@ekklesia/contracts";
-  EMPTY_MODULE_SECRET_SOURCE,
-  type ModuleRuntimeServices,
-  type ModuleSecretSource,
-} from "@ekklesia/contracts";
 import {
   createAuthorizationEvaluator,
   createAuthorizationStore,
@@ -21,12 +17,14 @@ 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 +391,13 @@ 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,
+ * 3. Construct the Core identity runtime, authorization store, and evaluator from that pool.
- *    then the Core identity runtime, authorization store, and evaluator.
  * 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
+ *    rediscovering modules a second time — passing the manifest-selected service map.
- *    `start`/`stop` hook receives.
  * 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
+ *    UI for that same eligible set, and passing the same per-module service map to HTTP handlers.
- *    handler.
  * 7. Bind the Node HTTP server.
  *
  * Discovery and permission composition happen before any pool, Better Auth instance, module
@@ -459,12 +454,10 @@ 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 +525,15 @@ 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(

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
@@ -339,10 +362,10 @@ 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: `${id} module`,
         permissions: [{ baseline: "public", description: "Gated drain probe.", id: permissionId }],
         version: "0.1.0",
@@ -386,11 +409,11 @@ async function createFixtureModule(
 ): Promise<void> {
   const moduleDirectory = path.join(modulesDirectory, id);
   const manifest = {
-    manifestVersion: 7,
+    manifestVersion: 8,
     id,
     name: `${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 +544,10 @@ 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 +1372,7 @@ 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);
@@ -2230,7 +2253,7 @@ 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 +2615,9 @@ 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,
@@ -2837,7 +2860,7 @@ 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 +3929,9 @@ 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";
@@ -48,9 +48,9 @@ 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(),

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

@@ -1,9 +1,7 @@
 import { createHash } from "node:crypto";
 import {
   ANONYMOUS_PRINCIPAL,
-  type ModuleDatabase,
   type ModuleRouteHandler,
-  type ModuleRuntimeServices,
   parsePermissionId,
   type RegisteredModuleHttpRoute,
 } from "@ekklesia/contracts";
@@ -16,6 +14,8 @@ import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
   createModuleUiPublicationRegistry,
   EMPTY_MODULE_REALTIME_REGISTRY,
+  type LegacyModuleRuntimeServices,
+  type ModuleDatabase,
 } from "@ekklesia/core/modules";
 import { describe, expect, it, vi } from "vitest";
 
@@ -74,7 +74,7 @@ function fakeStore(): AuthorizationStore {
   };
 }
 
-function fakeModuleServices(): ModuleRuntimeServices {
+function fakeModuleServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as unknown as ModuleDatabase });
 }
 

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 {
@@ -20,6 +18,8 @@ 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";
@@ -77,7 +77,7 @@ 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",
     }),
@@ -147,7 +147,7 @@ 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/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";
@@ -56,7 +56,7 @@ function fakeStore(): AuthorizationStore {
   };
 }
 
-function fakeModuleServices(): ModuleRuntimeServices {
+function fakeModuleServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as unknown as ModuleDatabase });
 }
 

apps/api/tests/lifecycle.test.ts

@@ -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";
@@ -108,7 +108,7 @@ 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",
       }),
@@ -213,7 +213,7 @@ 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([
@@ -240,9 +264,9 @@ 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.
@@ -441,6 +465,11 @@ 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 +783,7 @@ 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";
@@ -105,7 +105,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture = {
           : {}),
       },
       id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${id} module`,
       permissions: fixture.display
         ? [
@@ -155,7 +155,7 @@ interface Installation {
   readonly modules: readonly DiscoveredModule[];
 }
 
-function fakeServices(): ModuleRuntimeServices {
+function fakeServices(): LegacyModuleRuntimeServices {
   return Object.freeze({ database: Object.freeze({}) as unknown as ModuleDatabase });
 }
 

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 +18,23 @@ 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 { 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 +74,11 @@ 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 +92,7 @@ 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 +108,7 @@ 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 ?? {
@@ -145,6 +146,36 @@ 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 +539,7 @@ 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 +668,7 @@ 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 +797,7 @@ 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,
@@ -79,7 +79,7 @@ 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",
       }),
@@ -189,7 +189,7 @@ 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 {
@@ -129,7 +129,7 @@ async function createFixtureModule(
           : {}),
       },
       id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name,
       permissions: [
         {
@@ -241,7 +241,7 @@ 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

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 {
@@ -21,6 +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";
@@ -99,7 +99,7 @@ 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 +192,7 @@ 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);

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 {
+import { ANONYMOUS_PRINCIPAL } from "@ekklesia/contracts";
-  ANONYMOUS_PRINCIPAL,
-  type ModuleDatabase,
-  type ModuleRuntimeServices,
-} from "@ekklesia/contracts";
 import type { AuthorizationEvaluator, AuthorizationStore } from "@ekklesia/core/authorization";
 import type { EkklesiaIdentityRuntime } from "@ekklesia/core/identity";
 import {
@@ -14,6 +10,8 @@ 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";
@@ -139,7 +137,7 @@ 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 +213,7 @@ 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

core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ekklesia/core",
-  "version": "0.1.2",
+  "version": "0.2.5",
   "license": "AGPL-3.0-or-later",
   "private": true,
   "type": "module",

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

@@ -25,6 +25,7 @@ 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;
@@ -90,6 +91,16 @@ export function parseSha256File(contents: string): string {
   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>;
 }
@@ -121,6 +132,7 @@ export async function readModulePackagePlatform(
 
 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;
@@ -137,6 +149,7 @@ async function main(): Promise<void> {
   const result = await verifyModulePackage({
     archivePath: parsed.archivePath,
     platform,
+    ...(executionScratchDirectory === undefined ? {} : { executionScratchDirectory }),
     ...(expectedSha256 === undefined ? {} : { expectedSha256 }),
     ...(parsed.extractTo === undefined ? {} : { extractTo: parsed.extractTo }),
   });

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
+ * The window slides: every request from the device moves `lastSeenAt` forward, and the host
- * because human sessions expire that fast would mean someone climbing to a ceiling-mounted screen
+ * re-issues the cookie with a fresh lifetime, so a screen that is in use stays paired until an
- * on a schedule. What makes a long horizon safe is that it is not the security boundary: the server
+ * administrator revokes it. Revocation, not expiry, is the security boundary — the server checks it
- * decides on every single request whether the device is still revoked, so an administrator's revoke
+ * on every single request. The window exists only so an abandoned, forgotten screen eventually stops
- * takes effect immediately regardless of how long the credential would otherwise have lived. The
+ * being an identity at all: 180 days after it was last seen, its credential is dead.
- * expiry exists so an abandoned, forgotten screen eventually stops being an identity at all.
  */
 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 type { ModuleDatabaseAbiRuntimeServices, ModuleRuntimeServices } from "@ekklesia/contracts";
-import { drizzle } from "drizzle-orm/node-postgres";
+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/index.ts

@@ -2,12 +2,14 @@ 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";

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 "@ekklesia/contracts";
-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.`,
-);
 
 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-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

@@ -9,12 +9,18 @@
 // 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 with no relative imports, so Node can run the source file directly
+// Written as erasable TypeScript, so Node can run the source file directly in tests as well as the
-// in tests as well as the compiled file in the image.
+// 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, parseModuleSchemaDefinition } from "@ekklesia/contracts";
+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>>;
@@ -22,7 +28,7 @@ interface ProbeRequest {
 
 interface ProbeFailure {
   readonly role: string;
-  readonly reason: "export" | "identity" | "load";
+  readonly reason: "contract" | "export" | "identity" | "load";
 }
 
 function defaultExport(namespace: unknown): unknown {
@@ -51,8 +57,14 @@ async function probe(request: ProbeRequest): Promise<readonly ProbeFailure[]> {
         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 = parseModuleSchemaDefinition(defaultExport(namespace));
+        const definition =
+          request.databaseAbi === 1
+            ? parseModuleSchemaMetadataDefinition(defaultExport(namespace))
+            : parseModuleSchemaDefinition(defaultExport(namespace));
         if (definition.moduleId !== request.moduleId) {
           failures.push({ reason: "identity", role });
         }

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

@@ -1,21 +1,28 @@
 import { fork } from "node:child_process";
 import { createHash } from "node:crypto";
-import { chmod, mkdir, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
+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 ModuleManifest,
   type ModulePackageMetadata,
-  safeParseModuleManifest,
   safeParseModulePackageMetadata,
   safeParseModulePackageRuntimePackage,
-} from "@ekklesia/contracts";
+} 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,
@@ -45,6 +52,7 @@ import { discoverModuleSchemas, ModuleSchemaDiscoveryError } from "./schema-disc
 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"
@@ -53,20 +61,26 @@ export type ModulePackageVerificationErrorCode =
   | "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_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.",
@@ -80,12 +94,19 @@ const messages: Readonly<Record<ModulePackageVerificationErrorCode, string>> = O
     "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.",
+  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:
@@ -98,6 +119,8 @@ const messages: Readonly<Record<ModulePackageVerificationErrorCode, string>> = O
   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.",
@@ -126,6 +149,8 @@ export interface ModulePackagePlatform {
   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 {
@@ -135,6 +160,12 @@ export interface VerifyModulePackageOptions {
   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;
 }
 
@@ -261,12 +292,19 @@ function checkCompatibility(
   files: ReadonlyMap<string, Buffer>,
   platform: ModulePackagePlatform,
 ): void {
-  // This verifier implements the portable target only. Native targets are a later slice.
+  if (metadata.target === MODULE_PACKAGE_ANY_TARGET) {
-  if (metadata.target !== MODULE_PACKAGE_ANY_TARGET) {
+    // An any-target package bundles everything: no addon, no ELF object, no node_modules.
-    fail("MODULE_PACKAGE_TARGET_INCOMPATIBLE");
+    for (const [filePath, data] of files) {
-  }
+      if (
-  if ([...files.keys()].some((filePath) => filePath.toLowerCase().endsWith(".node"))) {
+        filePath.toLowerCase().endsWith(".node") ||
-    fail("MODULE_PACKAGE_NATIVE_FILE");
+        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");
@@ -275,9 +313,15 @@ function checkCompatibility(
   if (sdk !== undefined && !isVersionCompatible(sdk, manifest.compatibility.moduleSdk)) {
     fail("MODULE_PACKAGE_SDK_INCOMPATIBLE");
   }
-  // Transitional (ADR 0049): today a module's Drizzle copy must be interchangeable with the
+  if (manifest.database?.abi === 1) {
-  // platform's, because Core queries the module's tables with its own Drizzle instance. This is an
+    if (metadata.transitional?.databaseRuntime !== undefined) {
-  // implementation constraint pending a Module Database ABI, not that ABI.
+      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");
@@ -285,6 +329,74 @@ function checkCompatibility(
   }
 }
 
+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. */
@@ -311,13 +423,66 @@ function probeEntrypointPath(): string {
   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(
-  moduleId: string,
+  manifest: Pick<ModuleManifest, "database" | "id" | "version">,
-  version: string,
   entrypoints: Readonly<Record<string, string>>,
   timeoutMs: number,
+  executionDirectory: string,
 ): Promise<void> {
   const outcome = await new Promise<"ok" | "failed">((resolve) => {
     let settled = false;
@@ -332,13 +497,24 @@ async function loadEntrypoints(
       }
     };
     try {
-      child = fork(probeEntrypointPath(), [JSON.stringify({ entrypoints, moduleId, version })], {
+      child = fork(
-        cwd: tmpdir(),
+        probeEntrypointPath(),
-        env: {},
+        [
-        execArgv: [],
+          JSON.stringify({
-        serialization: "json",
+            ...(manifest.database?.abi === 1 ? { databaseAbi: 1 } : {}),
-        stdio: ["ignore", "ignore", "ignore", "ipc"],
+            entrypoints,
-      });
+            moduleId: manifest.id,
+            version: manifest.version,
+          }),
+        ],
+        {
+          cwd: executionDirectory,
+          env: {},
+          execArgv: [],
+          serialization: "json",
+          stdio: ["ignore", "ignore", "ignore", "ipc"],
+        },
+      );
     } catch {
       finish("failed");
       return;
@@ -401,7 +577,7 @@ export async function verifyModulePackage(
   const manifest = checkIdentity(archive, metadata, files);
   checkCompatibility(metadata, manifest, files, options.platform);
 
-  const scratch = await mkdtemp(path.join(tmpdir(), "ekklesia-package-verify-"));
+  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");
@@ -437,12 +613,7 @@ export async function verifyModulePackage(
 
     // 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(
+    await loadEntrypoints(manifest, entrypoints, options.loadTimeoutMs ?? 30_000, scratch);
-      metadata.module.id,
-      metadata.module.version,
-      entrypoints,
-      options.loadTimeoutMs ?? 30_000,
-    );
     try {
       await discoverModuleSchemas(discoveryOptions);
     } catch (error) {

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
+ * A lookup rather than a field on `ModuleRuntimeServices`, because configuration is resolved and
- * shared object identity every module receives** — a property this runtime has a test for — while
+ * frozen per module independently of its live service object. A module with no entry receives
- * configuration is per-module by definition. 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
+ * `ModuleRuntimeServices`: a storage facade is scoped to exactly the buckets one module declared.
- * storage facade is scoped to exactly the buckets one module declared. Sharing it would hand every
+ * 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
+  /** The manifest-selected service object for each module. One module's `start`/`stop` hooks and
-   * `apps/api` mounts routes) HTTP handlers receive for this runtime — a required production
+   * handlers receive its same entry; ABI-v1 entries carry distinct attributed executors. */
-   * dependency, never an optional test-only global. See `ModuleRuntimeServices`. */
+  readonly services: ModuleRuntimeServicesSource;
-  readonly services: ModuleRuntimeServices;
 }
 
 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],
+  foreignKey: LegacyModuleTableCandidate["foreignKeys"][number],
-  candidate: ModuleTableCandidate,
+  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/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 () => {
+  it(
-    delete process.env.DATABASE_URL;
+    "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
+      // 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 —
+      // 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.
+      // no argv manipulation is needed to prove the guard holds.
-    await expect(import("../src/cli/bootstrap-platform-owner.js")).resolves.toBeDefined();
+      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 () => {
+  it(
-    delete process.env.DATABASE_URL;
+    "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
+      // 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
+      // 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.
+      // the guard holds. Importing the command must never prompt, connect, or write.
-    await expect(import("../src/cli/create-initial-owner.js")).resolves.toBeDefined();
+      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/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 () => {
+  it(
-    const log = vi.spyOn(console, "log").mockImplementation(() => undefined);
+    "does not discover, connect, plan, or print when imported",
-    const error = vi.spyOn(console, "error").mockImplementation(() => undefined);
+    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/diagnostics/index.js");
-    await import("../src/cli/doctor.js");
+      await import("../src/cli/doctor.js");
-    await import("../src/index.js");
+      await import("../src/index.js");
 
-    expect(discoverModules).not.toHaveBeenCalled();
+      expect(discoverModules).not.toHaveBeenCalled();
-    expect(discoverModuleSchemas).not.toHaveBeenCalled();
+      expect(discoverModuleSchemas).not.toHaveBeenCalled();
-    expect(discoverModuleMigrations).not.toHaveBeenCalled();
+      expect(discoverModuleMigrations).not.toHaveBeenCalled();
-    expect(startModuleRuntime).not.toHaveBeenCalled();
+      expect(startModuleRuntime).not.toHaveBeenCalled();
-    expect(createPostgresMigrationDatabase).not.toHaveBeenCalled();
+      expect(createPostgresMigrationDatabase).not.toHaveBeenCalled();
-    expect(planModuleMigrations).not.toHaveBeenCalled();
+      expect(planModuleMigrations).not.toHaveBeenCalled();
-    expect(log).not.toHaveBeenCalled();
+      expect(log).not.toHaveBeenCalled();
-    expect(error).not.toHaveBeenCalled();
+      expect(error).not.toHaveBeenCalled();
 
-    log.mockRestore();
+      log.mockRestore();
-    error.mockRestore();
+      error.mockRestore();
-  });
+    },
+    IMPORT_SAFETY_TEST_TIMEOUT_MS,
+  );
 });

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",
+    "platform": "^0.2.0",
-    "moduleSdk": "^0.1.0"
+    "moduleSdk": "^0.2.0"
   },
   "permissions": [
     {

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

@@ -194,7 +194,7 @@ 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
+/** Never invoked — proves a legacy module's `ModuleRuntimeServices` has exactly one field,
- * `ModuleDatabase`, with no storage/jobs/configuration/secrets/authorization field this phase. */
+ * `database`, typed as `ModuleDatabase`, with no storage/jobs/configuration/secrets/authorization
-function typeOnlyServicesShape(services: ModuleRuntimeServices): void {
+ * 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

@@ -34,7 +34,7 @@ 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",

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 () => {
+  it(
-    await import("../src/modules/index.js");
+    "performs no filesystem I/O merely by importing the module runtime or the module-http contract",
-    await import("@ekklesia/contracts");
+    async () => {
+      await import("../src/modules/index.js");
+      await import("@ekklesia/contracts");
 
-    expect(readdir).not.toHaveBeenCalled();
+      expect(readdir).not.toHaveBeenCalled();
-    expect(readFile).not.toHaveBeenCalled();
+      expect(readFile).not.toHaveBeenCalled();
-    expect(realpath).not.toHaveBeenCalled();
+      expect(realpath).not.toHaveBeenCalled();
-    expect(stat).not.toHaveBeenCalled();
+      expect(stat).not.toHaveBeenCalled();
-  });
+    },
+    IMPORT_SAFETY_TEST_TIMEOUT_MS,
+  );
 });

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

@@ -200,7 +200,7 @@ 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

@@ -1,10 +1,12 @@
-import { mkdtemp, readdir, rm, stat, writeFile } from "node:fs/promises";
+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 {
-  type ModulePackageVerificationErrorCode,
+  currentModulePackageHost,
+  type ModulePackageHost,
   ModulePackageVerificationError,
+  type ModulePackageVerificationErrorCode,
   verifyModulePackage,
 } from "../src/modules/index.js";
 import {
@@ -16,8 +18,8 @@ import {
 
 const platform = {
   databaseRuntime: { "drizzle-orm": "0.45.2" },
-  moduleSdkVersion: "0.1.2",
+  moduleSdkVersion: "0.2.0",
-  platformVersion: "0.1.2",
+  platformVersion: "0.2.0",
 } as const;
 
 const temporaryDirectories: string[] = [];
@@ -46,6 +48,12 @@ async function archiveFile(options: PackageFixtureOptions = {}): Promise<{
   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,
@@ -72,25 +80,85 @@ 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: 8,
+      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);
@@ -140,6 +208,88 @@ describe("Module Package v1 verification (ADR 0049)", () => {
     );
   });
 
+  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" }) },
@@ -214,13 +364,51 @@ describe("Module Package v1 verification (ADR 0049)", () => {
     });
   });
 
+  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: { node: ">=20", nodeApi: 9 },
+          runtime: { libcVersion: ">=1.2.0", node: ">=20", nodeApi: 9 },
         }),
       },
       "MODULE_PACKAGE_TARGET_INCOMPATIBLE",
@@ -359,6 +547,179 @@ describe("Module Package v1 verification (ADR 0049)", () => {
     });
   });
 
+  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");

core/tests/module-permissions.test.ts

@@ -28,7 +28,7 @@ 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",

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 {
+import type { ModuleRealtimePublisher } from "@ekklesia/contracts";
-  ModuleDatabase,
+import type { LegacyModuleRuntimeServices, ModuleDatabase } from "../src/modules/database.js";
-  ModuleRealtimePublisher,
-  ModuleRuntimeServices,
-} from "@ekklesia/contracts";
 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 "../src/modules/database.js";
-} from "@ekklesia/contracts";
 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 {
+function fakeModuleRuntimeServices(): ModuleRuntimeServicesLookup {
-  return Object.freeze({ database: fakeModuleDatabase() });
+  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[0]).toBe(services.get("wired"));
-    expect(lifecycleServices.values[1]).toBe(services);
+    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(database.select)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.insert)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.insert)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.update)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.update)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.delete)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.delete)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.execute)).not.toHaveBeenCalled();
+    expect(vi.mocked(database.execute)).not.toHaveBeenCalled();
-    expect(vi.mocked(services.database.transaction)).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:
+    // Configuration remains a sibling of `services`: both are selected per module, but they are
-    // `services` is deliberately one shared object for the whole runtime, while configuration must
+    // independently composed snapshots with separate contracts and lifetimes.
-    // differ per module. Both properties hold simultaneously.
+    expect(alphaServices).toBe(services.get("alpha"));
-    expect(alphaServices).toBe(services);
+    expect(bravoServices).toBe(services.get("bravo"));
-    expect(bravoServices).toBe(services);
+    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",

core/tests/module-storage.test.ts

@@ -1,5 +1,6 @@
 import {
   EMPTY_MODULE_STORAGE,
+  isModuleStorageError,
   isValidModuleStorageKey,
   MODULE_STORAGE_KEY_MAX_BYTES,
   MODULE_STORAGE_READ_URL_DEFAULT_SECONDS,
@@ -322,6 +323,17 @@ describe("module storage scoping", () => {
     }
   });
 
+  it("recognizes a storage error from an installed module's separate package copy", () => {
+    const external = Object.assign(new Error("The storage service could not be reached."), {
+      code: "STORAGE_PROVIDER_UNAVAILABLE",
+      name: "ModuleStorageError",
+    });
+
+    expect(external).not.toBeInstanceOf(ModuleStorageError);
+    expect(isModuleStorageError(external)).toBe(true);
+    expect(isModuleStorageError(Object.assign(new Error("no"), { code: "UNKNOWN" }))).toBe(false);
+  });
+
   it("gives a module no way to reach another module's storage by knowing its name", async () => {
     const shared = fakeProvider();
     const announcements = createModuleStorage({

core/tests/module-ui-publication.test.ts

@@ -79,7 +79,7 @@ async function createModule(modulesDirectory: string, fixture: ModuleFixture): P
         version: contribution.version,
       })),
       id: fixture.id,
-      manifestVersion: 7,
+      manifestVersion: 8,
       name: `${fixture.id} module`,
       permissions:
         fixture.display === undefined

core/tests/postgres-migration.integration.ts

@@ -1905,7 +1905,7 @@ describe.sequential("live PostgreSQL migration timeout precedence", () => {
 describe.sequential("live PostgreSQL retained history for an uninstalled module", () => {
   const repositoryRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..", "..");
   const templateModule = path.join(repositoryRoot, "templates", "module");
-  const versions = { moduleSdkVersion: "0.1.0", platformVersion: "0.1.0" } as const;
+  const versions = { moduleSdkVersion: "0.2.0", platformVersion: "0.2.0" } as const;
 
   async function coreWithoutNewestMigration(directory: string): Promise<string> {
     const target = path.join(directory, "core-drizzle");

core/tests/support/import-safety.ts

@@ -0,0 +1,19 @@
+/**
+ * The per-test timeout for Core's import-safety tests, and only those.
+ *
+ * Each of these tests proves that importing a module does nothing (no I/O, no connection, no output)
+ * by performing a cold dynamic `import()` of a large Core source graph inside the test body. Vitest
+ * transforms and evaluates that whole graph on demand, and that work is CPU-bound. An ordinary test
+ * file's own top-level imports run before its tests start and fall under no per-test timeout; these
+ * deliberately do not, so the cost lands inside Vitest's default 5-second test timeout.
+ *
+ * Alone they take about 0.7–1.2 s. During a full `pnpm verify`, Turbo runs every package's suite at
+ * once and the CPU is saturated. Reproduced locally (six cores, Core's suite alongside five other
+ * packages' suites), the same tests took 3.0–5.4 s, and so timed out intermittently.
+ *
+ * 30 seconds is about five times the slowest time measured under load, which leaves room for slower
+ * shared CI runners. It matches the repository's integration-test timeout. It is still bounded, so a
+ * module that genuinely hangs while being imported, for example on a network call, still fails. The
+ * assertions themselves are unchanged: these tests fail on what an import does, never on speed.
+ */
+export const IMPORT_SAFETY_TEST_TIMEOUT_MS = 30_000;

core/tests/support/migration-module-fixture.ts

@@ -50,11 +50,11 @@ export function manifestFor(
   } = {},
 ): Record<string, unknown> {
   return {
-    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" },
     ...(options.dependencies ? { dependencies: options.dependencies } : {}),
     capabilities: [],
     permissions: [],

core/tests/support/module-package-fixture.ts

@@ -86,6 +86,7 @@ export interface PackageFixtureOptions {
   readonly id?: string;
   readonly version?: string;
   readonly serverSource?: string;
+  readonly schemaSource?: string;
   readonly manifest?: (manifest: Record<string, unknown>) => Record<string, unknown>;
   readonly runtimePackage?: Record<string, unknown>;
   readonly metadata?: (metadata: Record<string, unknown>) => Record<string, unknown>;
@@ -93,6 +94,8 @@ export interface PackageFixtureOptions {
   readonly tamper?: (files: Map<string, Buffer>) => void;
   /** Entries appended after the package's own, under any path. */
   readonly extraEntries?: readonly FixtureEntry[];
+  /** Extra payload files, listed in the metadata like every other file. */
+  readonly files?: Readonly<Record<string, Uint8Array | string>>;
 }
 
 export interface PackageFixture {
@@ -125,6 +128,7 @@ export async function modulePackageFixture(
   let files: Map<string, Buffer>;
   try {
     const created = await createMigrationModule(scratch, id, {
+      ...(options.schemaSource === undefined ? {} : { schemaSource: options.schemaSource }),
       serverSource:
         options.serverSource ??
         `export default { id: ${JSON.stringify(id)}, version: ${JSON.stringify(version)}, register() {} };\n`,
@@ -160,6 +164,10 @@ export async function modulePackageFixture(
     ),
   );
   files.set("THIRD_PARTY_NOTICES", Buffer.from("No third-party software is included.\n"));
+  files.set("LICENSE", Buffer.from("Example module license text.\n"));
+  for (const [filePath, data] of Object.entries(options.files ?? {})) {
+    files.set(filePath, Buffer.from(data));
+  }
 
   const listed = [...files.entries()]
     .sort(([left], [right]) => (left < right ? -1 : left > right ? 1 : 0))
@@ -167,13 +175,14 @@ export async function modulePackageFixture(
   const baseMetadata: Record<string, unknown> = {
     packageFormat: 1,
     module: { id, version },
+    license: "MIT",
     target: "any",
     runtime: { node: ">=20" },
     provenance: {
       revision: "86ae907f59458508e3277666cdd214f5bd7c1078",
-      packager: { name: "@ekklesia/module-pack", version: "0.1.2" },
+      packager: { name: "@ekklesia/module-pack", version: "0.2.0" },
     },
-    incorporates: { "@ekklesia/module-sdk": "0.1.2" },
+    incorporates: { "@ekklesia/module-sdk": "0.2.0" },
     files: listed,
   };
   const metadata = options.metadata ? options.metadata(baseMetadata) : baseMetadata;

core/tests/verify-module-package-cli.test.ts

@@ -3,6 +3,8 @@ import path from "node:path";
 import { fileURLToPath } from "node:url";
 import { describe, expect, it } from "vitest";
 import {
+  MODULE_VERIFIER_SCRATCH_ENV,
+  moduleVerifierScratchDirectory,
   parseSha256File,
   parseVerifyModulePackageArguments,
   readModulePackagePlatform,
@@ -57,6 +59,21 @@ describe("verify-module-package digest files", () => {
   });
 });
 
+describe("verify-module-package execution scratch", () => {
+  it("accepts an absolute operator-configured directory and otherwise leaves the library default", () => {
+    expect(moduleVerifierScratchDirectory({})).toBeUndefined();
+    expect(
+      moduleVerifierScratchDirectory({ [MODULE_VERIFIER_SCRATCH_ENV]: "/run/ekklesia-verifier" }),
+    ).toBe("/run/ekklesia-verifier");
+  });
+
+  it.each(["", "relative/path"])("refuses the invalid configured path %j", (configured) => {
+    expect(() =>
+      moduleVerifierScratchDirectory({ [MODULE_VERIFIER_SCRATCH_ENV]: configured }),
+    ).toThrow(`${MODULE_VERIFIER_SCRATCH_ENV} must be an absolute path.`);
+  });
+});
+
 describe("verify-module-package platform facts", () => {
   it("reads this platform's versions and its transitional database runtime from the repository", async () => {
     const root = JSON.parse(await readFile(path.join(repositoryRoot, "package.json"), "utf8"));

core/tsconfig.json

@@ -2,7 +2,8 @@
   "extends": "../packages/typescript-config/node.json",
   "compilerOptions": {
     "noEmit": true,
-    "types": ["node", "vitest/globals"]
+    "types": ["node", "vitest/globals"],
+    "rewriteRelativeImportExtensions": true
   },
   "include": [
     "drizzle.config.ts",

deploy/README.md

@@ -17,6 +17,7 @@ specific to one organization.
 | [`scripts/init-tls.sh`](scripts/init-tls.sh) | Creates the installation-private CA and the `postgres` and `object-storage` server certificates. |
 | [`scripts/gen-secrets.sh`](scripts/gen-secrets.sh) | Prints freshly generated secrets to paste into the env files. Writes nothing. |
 | [`Dockerfile`](Dockerfile) | The one production image, for the API and every operator command ([The production image](#the-production-image)). |
+| [`display-kiosk.md`](display-kiosk.md) | Setting up an unattended display screen: launch, pairing, and recovery. |
 
 ## The reference deployment
 
@@ -170,9 +171,20 @@ identity, target, and Node.js range against this platform, runs the platform's m
 validation, and loads the backend once in a short-lived process with no environment. Only then does
 it write the verified module directory, to a new directory outside module storage:
 
+The backend probe executes the package's server-side code; the verifier container is its isolation
+boundary. Keep the general-purpose `/tmp` mount `noexec`, and give only this one-shot verifier a
+separate executable scratch tmpfs. The mount below is ephemeral, bounded at 1100 MiB (just above the
+package format's 1 GiB expanded limit), `nodev`, `nosuid`, and writable only by the image's
+unprivileged `node` user. `EKKLESIA_MODULE_VERIFIER_SCRATCH_DIR` tells the CLI where that mount is;
+the verifier creates a unique child for each run and removes it on success or failure.
+
 ```sh
 mkdir -m 777 staging        # writable by the image's unprivileged user; nothing else is
-docker run --rm --network none --read-only --tmpfs /tmp \
+docker run --rm --network none --read-only \
+  --tmpfs /tmp:rw,nosuid,nodev,noexec,size=64m \
+  --tmpfs /run/ekklesia-verifier:rw,nosuid,nodev,exec,size=1100m,mode=0700,uid=1000,gid=1000 \
+  --cap-drop ALL --security-opt no-new-privileges \
+  -e EKKLESIA_MODULE_VERIFIER_SCRATCH_DIR=/run/ekklesia-verifier \
   -v "$PWD:/package:ro" -v "$PWD/staging:/staging" \
   --entrypoint node "$EKKLESIA_IMAGE" core/dist/cli/verify-module-package.js \
   /package/<id>-<version>-any.tar.gz --sha256-file /package/<id>-<version>-any.tar.gz.sha256 \
@@ -500,10 +512,10 @@ finds its files:
 ```sh
 docker build \
   --file deploy/Dockerfile \
-  --build-arg VERSION=0.1.2 \
+  --build-arg VERSION=0.2.5 \
   --build-arg REVISION="$(git rev-parse HEAD)" \
   --build-arg SOURCE=https://git.example.org/your-org/ekklesia \
-  --tag ekklesia:0.1.2 \
+  --tag ekklesia:0.2.5 \
   .
 ```
 

deploy/compose.yaml

@@ -132,6 +132,10 @@ services:
     command:
       - mini
       - -dir=/data
+      # A bucket is a SeaweedFS collection and claims a block of volumes. The ~1 GB automatic
+      # volume size leaves modest hosts with room for only a few collections; after that, writes
+      # stall instead of failing. This changes allocation granularity, not object or total capacity.
+      - -master.volumeSizeLimitMB=32
       - -s3.port.https=8443
       - -s3.cert.file=/run/ekklesia/tls/object-storage.crt
       - -s3.key.file=/run/ekklesia/tls/object-storage.key

deploy/display-kiosk.md

@@ -0,0 +1,130 @@
+# Setting up a display kiosk
+
+A display is a screen — a television with a small computer, or a mini PC on a wall — that opens one
+module's display page full screen and keeps it open unattended. This guide sets one up so it starts
+on boot, stays paired, recovers from network and server outages on its own, and never opens a second
+copy of itself.
+
+Pairing and display identity belong to the platform (ADR 0036). Today an administrator approves a
+screen in the Dashboard sidebar's **Display devices** panel; a later release moves this to
+**Settings → Displays**. Nothing below changes when that happens.
+
+## What the screen needs
+
+- Chromium or Google Chrome, current stable. The display page is tested against Chromium.
+- A **dedicated, persistent browser profile directory**. The device credential is an HttpOnly cookie
+  in that profile; it is what keeps the screen paired across reboots. Never use a guest, incognito, or
+  "clear data on exit" profile, and never share the profile with a person's browsing.
+- Network access to the installation's **API hostname** (the display page, its realtime stream, and
+  its module requests) and to the storage hostname that serves images.
+- A clock that is roughly right. Playback follows the server's clock, but TLS does not tolerate a
+  wildly wrong one.
+
+## The address
+
+Every display-capable module has one display page on the API hostname:
+
+```text
+https://<api-hostname>/display/<module-id>
+```
+
+For Signage that is `https://<api-hostname>/display/signage`. The Signage **Displays** tab shows the
+exact address under **Copy setup address**. Open it on the screen itself; opening it on an
+administrator's own computer only previews the display (and that browser appears in the roster as a
+*Signed-in browser*, which can be removed once it is offline).
+
+## Launching the browser
+
+Run exactly **one** launcher, and launch the page as an app window with a fixed profile:
+
+```bash
+chromium \
+  --user-data-dir=/var/lib/display-kiosk/profile \
+  --app=https://<api-hostname>/display/signage \
+  --kiosk \
+  --no-first-run \
+  --noerrdialogs \
+  --disable-session-crashed-bubble \
+  --hide-crash-restore-bubble \
+  --disable-features=Translate \
+  --autoplay-policy=no-user-gesture-required \
+  --check-for-update-interval=31536000
+```
+
+- `--app` opens the page with no tab strip and no address bar. `--kiosk` makes it full screen.
+- `--user-data-dir` is the persistent profile that holds the pairing. Keep it on persistent storage
+  and back it up with nothing: if it is lost, the screen simply shows a new pairing code.
+- Do **not** add `--restore-last-session`, and do not also start the browser from a desktop autostart
+  entry. Chromium allows one process per profile; a second launch hands its URL to the running
+  process, which opens a **second window or tab** of the display. That is the usual cause of
+  "duplicate" displays. One launcher, one profile, one window.
+
+### Start on boot and restart on exit (systemd)
+
+Run the browser as an unprivileged user in that user's graphical session, from a single user unit:
+
+```ini
+# ~/.config/systemd/user/display-kiosk.service
+[Unit]
+Description=Display kiosk
+After=graphical-session.target network-online.target
+Wants=network-online.target
+PartOf=graphical-session.target
+
+[Service]
+ExecStart=/usr/bin/chromium --user-data-dir=%h/.local/share/display-kiosk --app=https://<api-hostname>/display/signage --kiosk --no-first-run --noerrdialogs --disable-session-crashed-bubble --hide-crash-restore-bubble --disable-features=Translate --autoplay-policy=no-user-gesture-required --check-for-update-interval=31536000
+Restart=always
+RestartSec=5
+
+[Install]
+WantedBy=graphical-session.target
+```
+
+```bash
+systemctl --user daemon-reload
+systemctl --user enable --now display-kiosk.service
+loginctl enable-linger <kiosk-user>   # with the desktop set to log this user in automatically
+```
+
+`systemctl --user stop display-kiosk` closes the browser cleanly, which is what keeps its profile —
+and the pairing cookie — intact. Avoid cutting power to a running kiosk when you can: a clean shutdown
+is always safer for a browser profile.
+
+## Pairing
+
+1. Start the kiosk. With no credential it shows a **six-digit pairing code**.
+2. In the Dashboard, enter the code under **Display devices**, give the screen a name, and approve.
+3. Within a few seconds the screen collects its credential and starts showing content.
+4. In Signage → **Displays**, name the display and choose its group and audience.
+
+A paired screen stays paired across browser restarts and reboots, and for as long as it is in use:
+its credential is renewed each time it checks in, and only expires after **180 days without being
+used** (ADR 0056). A screen that is switched off and stored for longer than that, or that is revoked,
+returns to its pairing code and is paired again the same way.
+
+## What happens when things go wrong
+
+| Event | What the screen does |
+| --- | --- |
+| Network drops for seconds | Nothing visible. The display keeps running; the realtime stream reconnects. |
+| Network or API down for longer | Keeps playing what it has cached, with a small corner note; recovers by itself when the server is back. No remount, no reload. |
+| API restarted or upgraded | Reconnects by itself. A new module version is picked up within five minutes and swapped in. |
+| Browser crashes or is restarted | systemd restarts it; the same profile is still paired. |
+| Machine reboots | Starts on boot and resumes. If the server is not up yet, the screen retries on its own (every few seconds, backing off to once a minute) until it is. |
+| Display revoked in the Dashboard | Stops showing content within seconds and returns to its pairing code. |
+| Display moved to another group or audience | Switches content within about one heartbeat (≈12 s), no reload. |
+
+**Offline cold start is not supported yet.** A screen that is already showing content survives an
+outage. A screen that *boots* while the server is completely unreachable can load its cached page but
+cannot mount the module until the server answers, because the authorization it needs is never cached
+(ADR 0043, Signage ADR 0006). It shows a short message and retries on its own until the server is
+reachable — nobody needs to touch it.
+
+## Checklist for a new kiosk
+
+- [ ] One systemd unit, no desktop autostart entry, no second launcher.
+- [ ] `--user-data-dir` on persistent storage, not shared, not cleared on exit.
+- [ ] Automatic login of the kiosk user, and screen blanking/power saving disabled.
+- [ ] Paired and named; assigned in Signage.
+- [ ] Unplug the network for a minute: content keeps playing, then the note clears on reconnect.
+- [ ] Reboot: the screen comes back paired without anyone touching it.

docs/architecture/decisions/0036-managed-device-identity-and-pairing.md

@@ -2,6 +2,7 @@
 
 - Status: Accepted
 - Date: 2026-08-24
+- Session lifetime superseded by: [0056](0056-device-credentials-last-while-in-use.md)
 - Extends: [0013](0013-core-authorization-and-owner-bootstrap.md),
   [0032](0032-native-module-realtime-transport.md),
   [0033](0033-display-kiosk-host-contract.md),

docs/architecture/decisions/0050-module-database-abi-v1.md

@@ -1,6 +1,6 @@
 # 0050: Module Database ABI v1: modules and Core exchange SQL, never ORM objects
 
-- Status: Proposed
+- Status: Accepted
 - Date: 2026-10-07
 - Supersedes (partial): [0016](0016-module-database-access.md) — for modules that declare ABI v1,
   only its definition of the module database service as `Pick<NodePgDatabase, …>`, a facade over
@@ -181,8 +181,13 @@ transaction(callback, options)   → the callback's result
   - `"object"` rows are keyed by column name.
   - `"array"` rows are positional, in `fields` order. An ORM that selects the same column name twice,
     as joins do, needs this mode.
-  - Core rejects an object-mode result that has duplicate column names, rather than silently
+  - Duplicate column names are invalid in object mode. Core rejects such a result rather than
-    dropping one.
+    silently dropping a column.
+  - With the current PostgreSQL and driver execution path, the result's shape is only known once
+    the statement has run. So a mutating statement can already have had its effects when the
+    result-shape error is reported.
+  - This is not a security guarantee. A caller that needs atomicity runs the mutation inside an ABI
+    transaction, where the error rolls the mutation back with everything else.
 - **`command`** is PostgreSQL's command tag word, such as `SELECT`, `INSERT`, `UPDATE`, or `DELETE`.
 - **`rowCount`** is the number of rows PostgreSQL reports as processed, or `null` when it reports
   none.
@@ -331,15 +336,37 @@ transaction(async (tx) => { … }, { isolation, readOnly })
   transaction call rejects with the callback's error. There is no `rollback()` method: to roll back,
   the module throws.
 - **All work is awaited inside the callback.** Module code must await every database operation it
-  starts through `tx` before its callback returns.
+  starts through `tx` before its callback returns. What happens when work is still outstanding
-  - If the callback settles while an operation launched through that scope is still outstanding, the
+  depends on how the callback settled:
-    module has used the scope incorrectly.
+  - **Resolved with work outstanding.** The module forgot an `await` and has used the scope
-  - The transaction is then never committed: Core rolls it back, and the transaction call rejects
+    incorrectly. The transaction is never committed: Core rolls it back, and the transaction call
-    with the scope-usage `ModuleDatabaseError`.
+    rejects with the scope-usage `ModuleDatabaseError`. A forgotten `await` therefore fails. It never
-  - A forgotten `await` therefore fails. It never quietly changes what the transaction contains.
+    quietly changes what the transaction contains.
+  - **Rejected with work outstanding.** The callback's own rejection stays the transaction's error.
+    Core rolls back and does not replace that error, a PostgreSQL failure included, with the
+    scope-usage error just because sibling work was still settling. This is what happens when one
+    query in `await Promise.all([tx.query(a), tx.query(b)])` fails while the other is still running.
+  - Either way, outstanding work never leads to a commit.
   - Core may let operations that already started finish, or settle, before it rolls back and releases
     the connection, so that a pooled connection is never handed on mid-operation. Waiting for them
     never turns into a commit.
+- **Transaction control belongs to the callbacks.** Transaction-control SQL is forbidden through
+  `query`: `BEGIN`, `START TRANSACTION`, `COMMIT`, `ROLLBACK`, `SAVEPOINT`, `RELEASE SAVEPOINT`, and
+  every other statement that starts, ends, or marks a transaction. Modules control a transaction's
+  lifecycle only through the `transaction` and `savepoint` callbacks.
+  - This is a conformance rule for trusted module code, not a sandbox or a security guarantee.
+  - Core does not parse SQL to enforce it. Such a statement is valid PostgreSQL, so PostgreSQL
+    executes it before Core can see its result.
+  - Core detects a violation where the driver and protocol make that possible: from the statement's
+    command tag, and from the connection's transaction status. It then fails safely:
+    - the call rejects;
+    - the transaction's scopes refuse every later statement without sending it, because it would
+      otherwise run outside any transaction;
+    - Core never commits the enclosing transaction itself, and that transaction rejects too;
+    - the connection is destroyed rather than reused.
+  - Core does not claim to undo a transaction-control statement PostgreSQL has already executed. A
+    `COMMIT` sent through a transaction's `query` has already committed the work before it.
+  - The commit and rollback guarantees in this section apply to conforming use of the ABI.
 - **Revocation.** When the callback settles, `tx` is revoked, and it stays revoked once the scope has
   finished. Any later call on it fails with the
   closed-scope `ModuleDatabaseError` and sends nothing to PostgreSQL. A `tx` that escapes its
@@ -362,9 +389,12 @@ tx.savepoint(async (sp) => { … })
 - **Naming.** Core generates every savepoint identifier. Modules never provide one.
 - **Release and rollback.** A resolved callback releases the savepoint. A rejected one rolls back
   to it, releases it, and rejects with the callback's error.
-- **Outstanding work.** The awaiting rule for transactions applies unchanged. A savepoint callback
+- **Outstanding work.** The awaiting rule for transactions applies unchanged.
-  that settles with operations still outstanding is a scope-usage error. The savepoint is rolled
+  - A savepoint callback that resolves with operations still outstanding is a scope-usage error.
-  back, never released, and the call rejects with that error.
+    The savepoint is rolled back, never released, and the call rejects with that error.
+  - A savepoint callback that rejects keeps its own error. The savepoint is rolled back as for any
+    rejection.
+  - Either way, outstanding work never leads to a release.
 - **One active scope.** Only the innermost open scope may run statements. While a savepoint is
   open, its parent executor refuses statements and new savepoints, so savepoint scopes can never
   overlap.

docs/architecture/decisions/0051-module-package-license-material.md

@@ -0,0 +1,207 @@
+# 0051: Module packages declare their own license and carry its text
+
+- Status: Accepted
+- Date: 2026-10-07
+- Amends: [0049](0049-module-package-v1.md) — every Module Package v1 artifact gains an
+  authoritative package-level license declaration and a `LICENSE` payload. `packageFormat` stays 1.
+- Related: [the repository license](../../../README.md#license),
+  [ADR 0048](0048-generic-image-and-installed-module-storage.md),
+  [ADR 0050](0050-module-database-abi-v1.md)
+
+## Context
+
+ADR 0049 makes a module release one immutable, self-contained package and already requires
+`THIRD_PARTY_NOTICES` for code bundled from third-party dependencies. It deliberately says that no
+package is a distributable release until license and notice collection is proven. The implemented
+packager now generates those notices from the dependency code it actually bundles, but Module
+Package v1 still does not declare the module's own license or carry the module's license text.
+
+Those are different obligations. `THIRD_PARTY_NOTICES` excludes both the module itself and bundled
+Ekklesia-owned packages. The source module's development `package.json` is not copied into the
+package: the packager generates a minimal runtime `package.json` instead. Consequently, an archive
+can preserve every third-party notice and still lose the authoritative declaration and text for the
+work being distributed.
+
+The repository and its workspace packages declare `AGPL-3.0-or-later`, and the repository carries
+the GNU AGPL version 3 text in `LICENSE`. The canonical module template also declares
+`AGPL-3.0-or-later` in its source `package.json`. Official Ekklesia modules use that license today,
+but a packager cannot assume that every module has the platform's license. A module release must say
+what license its own publisher actually declared and must carry the corresponding material.
+
+The current `ekklesia.package.json` contract is strict: a reader refuses unknown fields. Adding a
+required field therefore makes pre-change and post-change readers reject one another's artifacts.
+That is intentional here, not a reason for `packageFormat: 2`. ADR 0049 has not admitted a
+distributable v1 release without proven license handling; this decision completes that still-open v1
+requirement before real modules are distributed. The packager and verifier must adopt the tightening
+together, and strict readers fail closed during that cutover rather than silently misreading a
+package.
+
+## Decision
+
+### The package declares the module's own license once
+
+Every Module Package v1 `ekklesia.package.json` has a required top-level `license` field containing
+the module's SPDX license expression:
+
+```json
+{
+  "packageFormat": 1,
+  "module": { "id": "example", "version": "0.1.0" },
+  "license": "AGPL-3.0-or-later"
+}
+```
+
+`ekklesia.package.json.license` is the authoritative package-release declaration. The expression is
+not repeated in `ekklesia.module.json` or in the generated runtime `package.json`. The module's
+source `package.json` is a packaging input, not release metadata inside the finished artifact.
+
+The source module must explicitly declare its license in its own project metadata. The canonical
+packager reads the normal string `license` field from the source module's `package.json`, validates
+it as a supported SPDX license expression, and preserves that declaration in
+`ekklesia.package.json`. It refuses a missing, empty, `UNLICENSED`, legacy object-shaped, malformed,
+or unsupported declaration. It never substitutes the Ekklesia platform's license and does not try
+to decide whether a publisher chose an appropriate license.
+
+For official Ekklesia modules today the declaration is `AGPL-3.0-or-later`, matching the repository
+license. This is a fact about those modules, not a default the packager invents for other modules.
+
+### The package carries the applicable license material
+
+Every distributable Module Package v1 contains a regular file at this canonical path inside the
+module directory:
+
+```text
+LICENSE
+```
+
+`LICENSE` contains the license material applicable to the module release. It is an ordinary payload
+file under ADR 0049:
+
+- it appears exactly once in the strict `files` list in `ekklesia.package.json`;
+- its byte size and SHA-256 are recorded there;
+- the archive SHA-256 covers it and the metadata that records it;
+- it is immutable for that release and changes only by producing a different archive.
+
+The license bytes must be available as an explicit source or build input. The canonical source is a
+module-owned `LICENSE` file at the module source root. Tooling may also accept an explicitly named
+license-text input when a workspace layout needs one, but it must place those bytes at the package's
+canonical `LICENSE` path. It must not search ancestor directories and silently adopt a repository
+license, generate project-specific license material, or download text from the network. The
+in-repository template implementation may later add its own `LICENSE` input or explicitly select
+the repository's AGPL text; this ADR does neither.
+
+The packager validates that both inputs exist: the declared SPDX expression and the applicable
+license text. It preserves the supplied text as deterministic package input. It is not a license
+compatibility engine and does not offer legal advice.
+
+### `THIRD_PARTY_NOTICES` remains a separate concern
+
+`THIRD_PARTY_NOTICES` continues to describe third-party packages actually bundled into or included
+with the module: their identities, versions, declared licenses, uses, and required license and notice
+texts. It is not the module's own license file and cannot satisfy the `LICENSE` requirement.
+
+The module itself is not added to `THIRD_PARTY_NOTICES`. A first-party module is not duplicated there
+merely because it uses the same AGPL license as Ekklesia. `LICENSE` and `THIRD_PARTY_NOTICES` both
+remain required because they describe different parts of the release.
+
+### Bundled Ekklesia code
+
+A module package may bundle Ekklesia-owned SDK, contracts, database adapter, UI, and related code.
+`incorporates` continues to record the exact versions of those Ekklesia components. It is an
+inventory and compatibility fact, not a second authoritative declaration of the module's license.
+
+Today's official module packages and the Ekklesia components they incorporate are all
+`AGPL-3.0-or-later`. Their package `LICENSE` therefore carries the applicable AGPL text once. The
+package does not need one identical copy per incorporated Ekklesia component, and those components
+do not move into `THIRD_PARTY_NOTICES` merely to obtain duplicate text.
+
+This ADR does not decide every future combination of a community module's license with differently
+licensed incorporated code. Publishers remain responsible for their choices and obligations. The
+packager preserves declared information and required material; it does not judge broad license
+compatibility.
+
+### Packaging and verification fail closed
+
+The implementation that follows this ADR must make the packager refuse a module when:
+
+- its source project has no acceptable explicit SPDX license expression;
+- its license-text input is missing or is not a regular file;
+- producing the package would omit `LICENSE` from the strict payload.
+
+The package verifier must refuse an artifact when:
+
+- `ekklesia.package.json.license` is missing, malformed, or outside the expression syntax the
+  contract supports;
+- the `LICENSE` payload is missing;
+- `LICENSE` is absent from the exact `files` list; or
+- its listed size or SHA-256 does not match its bytes, as with every other payload file.
+
+This ADR does not implement those checks. The contracts, packager, verifier, fixtures, template,
+and package proofs must change together in the implementation PR.
+
+### Determinism and runtime metadata
+
+`LICENSE` introduces no timestamp, generated host path, network lookup, or other environmental
+input. The deterministic archive rules in ADR 0049 apply to it unchanged.
+
+The generated runtime `package.json` remains minimal and is not authoritative for licensing. There
+is no runtime need to add a `license` field there. `ekklesia.package.json` is the release metadata,
+while the source module's `package.json` only supplies the publisher's declaration to the packager.
+
+### Package format remains 1
+
+`packageFormat` remains **1**. This is an additive tightening that completes ADR 0049's licensing
+requirement before the first distributable Module Package v1 release. It does not change the archive
+encoding, safety rules, target model, installation layout, or meaning of any existing field.
+
+The strict metadata schema is preserved. A verifier that predates this decision refuses the new
+unknown `license` field; an updated verifier refuses an old package that lacks it or lacks `LICENSE`.
+Both outcomes are safe. There is no installed or published v1 release compatibility promise to
+preserve because ADR 0049 explicitly withheld distributable-release status pending this work.
+
+ADR 0050's database ABI decision is unaffected. Whether a package uses database ABI v1 or the legacy
+database facade has no bearing on its license declaration or payload.
+
+## Consequences
+
+- A Module Package v1 release is self-describing about the module's own license and carries the
+  corresponding material without consulting its source repository or the network.
+- Operators can audit the release declaration in `ekklesia.package.json`, the module's license in
+  `LICENSE`, and dependency obligations in `THIRD_PARTY_NOTICES` without conflating them.
+- Module publishers must make both the SPDX declaration and license text explicit packaging inputs.
+- The template and every package fixture must be updated before packaging succeeds, but only in the
+  later implementation PR.
+- Existing development artifacts produced before this tightening are intentionally rejected and
+  rebuilt; none was a distributable v1 release under ADR 0049.
+- Identical AGPL text is carried once for today's official module and incorporated Ekklesia code.
+
+## Alternatives
+
+- **Use only `THIRD_PARTY_NOTICES`.** Rejected: it describes third-party dependencies and explicitly
+  excludes the module itself and Ekklesia-owned incorporated packages.
+- **Make the generated runtime `package.json` authoritative.** Rejected: it is deliberately minimal
+  runtime discovery metadata, and copying the declaration there would duplicate release metadata.
+- **Copy the platform's license automatically.** Rejected: the platform cannot declare a module's
+  license for its publisher, and a community module may make a different declaration.
+- **Search parent directories for `LICENSE`.** Rejected: the chosen file would depend on checkout
+  layout and could silently apply an unrelated repository's terms. An out-of-tree input must be
+  explicit.
+- **Download standard license text while packaging.** Rejected: builds must remain offline,
+  deterministic, and independent of a mutable remote source.
+- **Duplicate the AGPL text for every incorporated Ekklesia package.** Rejected: identical copies
+  add no information. `incorporates` records component identity and version; one applicable text is
+  sufficient for today's official packages.
+- **Create `packageFormat: 2`.** Rejected: v1 has not crossed its own distributable-release boundary,
+  strict readers fail safely, and no archive or installation mechanism changes.
+- **Make the packager decide license compatibility.** Rejected: preserving declarations and material
+  is mechanical; judging every present and future license combination is a broader legal and policy
+  problem.
+
+## Deferred
+
+- Implementing contract, packager, verifier, fixture, template, and package-proof changes.
+- The exact set and version of SPDX expression syntax accepted by the implementation, beyond the
+  requirement that unsupported expressions fail closed.
+- Broad policy for future mixed-license community modules and incorporated code.
+- Container-image license distribution.
+- Marketplace, installer, publisher verification, and package-signing policy.

docs/architecture/decisions/0052-reviewed-license-supplements.md

@@ -0,0 +1,229 @@
+# 0052: Reviewed license supplements cover redistributed dependencies whose packages omit required material
+
+- Status: Accepted
+- Date: 2026-10-07
+- Extends: [0049](0049-module-package-v1.md), in one respect only. ADR 0049 left exactly how licence
+  and notice material is collected to the packager's implementation. That implementation, and the
+  module development guide, then took material only from a redistributed package's own files, or
+  from a predefined standard licence text that needs no project-specific lines. This ADR adds one
+  further source: a reviewed supplement. Everything else in ADR 0049 is unchanged, as is
+  `packageFormat`.
+- Related: [ADR 0048](0048-generic-image-and-installed-module-storage.md),
+  [ADR 0051](0051-module-package-license-material.md),
+  [ADR 0055](0055-corresponding-source-artifacts.md) (decides the source-obligation policy deferred
+  below)
+
+## Context
+
+ADR 0049 requires every Module Package v1 to carry `THIRD_PARTY_NOTICES`: the licence and notice
+material that redistributing its third-party code requires. It also states that no package is a
+distributable release until licence and notice collection is proven. The canonical packager collects
+material from two places:
+
+- the licence, copying, copyright, and notice files a redistributed package ships at its root;
+- the standard text of the package's declared licence, but only when that text is complete without
+  project-specific lines (Apache-2.0 today).
+
+A package that has neither stops packaging. That is fail-closed by design: an MIT or BSD package
+without its file is refused, because its copyright line exists only in that file.
+
+The first native-target module package needs a dependency that this rule cannot handle.
+`@img/[email protected]` is the prebuilt libvips that `sharp` loads on Linux x64 with
+glibc. It declares `LGPL-3.0-or-later`. The package itself, like its latest release 1.3.4, contains
+only these files:
+- `README.md`
+- `versions.json`
+- `lib/index.js`
+- one glib header
+- one shared library
+
+That shared library includes about 29 libraries. Its README names each one and the licence it is
+used under, mostly with a link:
+- LGPL components, such as libvips, glib, and pango;
+- cairo, under MPL-2.0;
+- many BSD-, MIT-, zlib-, IJG-, and FreeType-licensed libraries.
+
+The package ships no licence text and no copyright notice for any of them. No standard text can stand
+in for that material: it includes per-project copyright notices and several different licences.
+
+Options that were ruled out before this decision:
+- **Downloading material while packaging.** Packaging must stay offline and deterministic (ADR 0049,
+  ADR 0051).
+- **Inventing material.** A packager that guesses notices produces artifacts that look compliant and
+  may not be.
+
+Ekklesia needs a way to carry material that a dependency's own package omits. It has to be reviewed
+by people, tied to exactly the bytes it was reviewed for, and fail closed whenever that tie breaks.
+
+Some of these licences may also impose obligations beyond carrying text: the LGPL and the MPL can
+require recipients to be able to obtain corresponding source. Whether and how such an obligation is
+met for a particular redistributed binary is a legal and compliance determination. This decision
+does not make that determination.
+
+## Decision
+
+### Package-provided material stays the preferred source
+
+The licence, copying, copyright, and notice material that a redistributed package ships remains the
+primary source, collected exactly as it is today. Nothing in this ADR removes, replaces, or rewrites
+package-provided material. A supplement only adds to it.
+
+### A reviewed supplement fills what a package omits
+
+When a redistributed dependency omits material that redistribution requires, the canonical Ekklesia
+packager may use a **license supplement**: a checked-in, reviewed record of that material for one
+exact dependency.
+
+- **Where supplements live.** In the Ekklesia repository, as part of the canonical packager's own
+  versioned inputs. A supplement enters only through Ekklesia's normal reviewed change process, and
+  the change that adds it is its review. A given packager version therefore always carries the same
+  supplements.
+- **What that review is.** Repository review of a supplement is project and code review of a build
+  input: whether its content, its exact match, and its provenance are what the change says they are.
+  It is not legal review, and it does not prove that any redistribution obligation is satisfied.
+- **What a supplement may contain:**
+  - licence texts;
+  - copyright and attribution notices;
+  - provenance: where each piece of material was obtained, and which upstream component versions it
+    covers;
+  - corresponding-source information, such as where upstream source for the exact build is
+    published;
+  - other material that accompanies the dependency's redistribution.
+- **Generic by construction.** Supplements are data. The mechanism contains no package-specific code
+  and treats every supplement identically, whether it is for libvips or for any other dependency.
+
+### A supplement matches one exact package, or it fails closed
+
+A supplement names exactly one redistributed package:
+
+- its package name;
+- its exact version;
+- an integrity value for the package's contents: a digest the packager computes from the package's
+  redistributed files.
+  - **Deterministic.** It covers exactly each redistributed file's normalized relative path within
+    the package and its bytes, combined in an order defined by the paths themselves.
+  - **Host-independent.** It excludes filesystem metadata, timestamps, ownership, permissions, and
+    the order in which files were extracted or listed. The same package contents always give the
+    same digest, wherever and however they were installed.
+  - **Documented.** The implementation defines and documents the exact algorithm, which does not
+    depend on any package manager.
+
+The packager uses a supplement only when all three match the package it is about to redistribute.
+
+- **A mismatch on any of the three fails packaging.** This covers, for example, a supplement whose
+  name and version match but whose integrity differs. It never falls back to a nearby version, and
+  it never silently skips the supplement.
+- **Every match is used.** A supplement that matches is always merged into the notices, including
+  when the package also ships some material of its own.
+- **Gaps still fail.** If a dependency lacks required material and no exact supplement matches, the
+  packager stops, exactly as it does today.
+
+### Supplements are immutable build inputs
+
+- **Immutable.** A supplement is never edited in place to cover a different build. A changed
+  package, a new version, or different contents need a new supplement, reviewed again.
+- **No network.** Packaging reads supplements from the packager's own inputs and never downloads
+  anything. Assembling a supplement's content is a separate, offline-reviewed curation step done
+  when the supplement is authored, never during packaging.
+
+### Merging is deterministic and labelled
+
+The notice generator merges package-provided material and supplement material deterministically. The
+same packager version and the same inputs still produce a byte-identical `THIRD_PARTY_NOTICES`
+(ADR 0049).
+
+- **Order.** Within a dependency's entry, package-provided material comes first, then supplement
+  material.
+- **Labelling.** Supplement material is marked as supplied by Ekklesia's reviewed supplement, never
+  presented as if it came from the package.
+- **No other change.** Dependencies are still sorted, line endings normalized, and each dependency
+  keeps its own entry, exactly as before.
+
+### A supplement never changes a dependency's declared licence
+
+`THIRD_PARTY_NOTICES` keeps reporting the licence the dependency itself declares.
+
+- **No override.** A supplement can add material about the components a dependency contains, but it
+  cannot replace, override, or rewrite the dependency's declared licence.
+- **Consistency check.** A supplement records the declared licence it was reviewed against. If that
+  disagrees with the package's actual declaration, packaging fails.
+
+### Legal and compliance determinations are not made here
+
+A supplement can record corresponding-source information, but this ADR does not decide what
+satisfies any licence's source obligation, and neither does the mechanism:
+- the mechanism never asserts that a written offer, a source URL, a mirror, or any other arrangement
+  satisfies a licence;
+- carrying a supplement shows that the reviewed material is present in the package. It does not
+  certify that the package is compliant;
+- for every redistributed binary under the LGPL, the MPL, or any other licence with source or
+  similar obligations, the determination of whether and how those obligations are met is deferred.
+  It must be made, and verified, separately.
+
+ADR 0049's release gate still applies. A package that redistributes such a binary does not become a
+distributable release just because its supplement was merged. It becomes one only once that
+binary's compliance determination has been made and verified.
+
+### Scope
+
+- **Third-party code only.** Supplements apply only to redistributed third-party dependencies,
+  whether bundled or copied into the package. They never apply to the module's own licence or
+  `LICENSE` (ADR 0051), or to incorporated Ekklesia packages.
+- **No package format change.** `packageFormat` stays **1**. A supplement changes only the content of
+  `THIRD_PARTY_NOTICES`, which is already a listed, digested payload file. No metadata field, archive
+  rule, or verifier contract changes.
+
+### The motivating case
+
+`@img/[email protected]` is the first dependency expected to need a supplement. This ADR
+does not curate it. Its supplement will be assembled, reviewed, and merged separately, together with
+the native-target packaging work that redistributes it. The source-obligation determination for its
+LGPL and MPL components remains open, as above.
+
+## Consequences
+
+- A dependency whose package omits required material can be redistributed after review, offline and
+  deterministically, instead of making native packaging impossible.
+- Each supplement is tied to exact package bytes, so a changed or unexpected dependency fails
+  packaging rather than inheriting material reviewed for something else.
+- Ekklesia takes on reviewing and maintaining supplements. Every version bump of a supplemented
+  dependency needs a new reviewed supplement before packaging works again.
+- `THIRD_PARTY_NOTICES` can now contain material that did not come from the dependency's package. It
+  is always labelled.
+- Carrying material and meeting obligations stay separate. Source-availability questions remain open
+  until they are determined per binary.
+
+## Alternatives
+
+- **Download licence material while packaging.** Rejected: packaging must stay offline,
+  deterministic, and independent of a mutable remote source (ADR 0049, ADR 0051).
+- **Extend the standard-text list.** Rejected: standard texts only work when the licence needs no
+  project-specific line. Bundled native libraries need per-project copyright notices, and several
+  different licences.
+- **Match supplements by name and version alone.** Rejected: identical versions can differ in content
+  across registries or rebuilds, and the material was reviewed for specific bytes.
+- **Fall back to the nearest supplemented version.** Rejected: material reviewed for one build says
+  nothing reliable about another.
+- **Let a supplement restate a dependency's licence.** Rejected: the declaration belongs to the
+  dependency's publisher. A supplement that could override it could misrepresent what is being
+  redistributed.
+- **Per-package special cases in the packager** (for example, code that knows about libvips).
+  Rejected: every supplemented dependency would need new code, and review would be split between
+  code and data.
+- **Treat a recorded source URL or written offer as satisfying copyleft obligations.** Rejected for
+  this ADR: that is a legal determination that has to be verified per binary, not assumed by a build
+  mechanism.
+- **Supplements provided by module authors.** Not adopted now: the canonical packager uses only
+  supplements reviewed into Ekklesia. Whether module repositories may contribute their own reviewed
+  supplements is deferred.
+
+## Deferred
+
+- Implementing the mechanism in the canonical packager: the supplement format and storage location,
+  the integrity algorithm, the matching, the merge, and the tests.
+- Curating and reviewing the supplement for `@img/[email protected]`.
+- The legal and compliance determination of source obligations for each redistributed binary, and
+  how a determination is recorded.
+- Whether the packager should refuse, or flag, packages whose supplements note an open determination.
+- Supplements provided by module repositories.
+- Recording which supplements were used in `ekklesia.package.json`, should that ever be needed.

docs/architecture/decisions/0053-standalone-module-development-packages.md

@@ -0,0 +1,255 @@
+# 0053: A module builds outside the monorepo, from Ekklesia packages published over the npm registry protocol
+
+- Status: Accepted
+- Date: 2026-10-07
+- Superseded in part by: [0054](0054-public-package-reads-before-launch.md) — only where this ADR
+  describes the package phase before launch as private, or requires authenticated package reads.
+- Extends: [0049](0049-module-package-v1.md). This is the step ADR 0049 deferred: "publishing the
+  Ekklesia SDK packages for module builds outside a platform workspace". A registry is used only to
+  build a module. Installing one stays registry-free: an installed package is self-contained, as ADR
+  0049 decided.
+- Related: [ADR 0002](0002-pnpm-workspace-and-typescript.md),
+  [ADR 0006](0006-versioned-capabilities-and-compiled-module-runtime.md),
+  [ADR 0021](0021-modules-as-hostable-products.md),
+  [ADR 0023](0023-module-ui-build-pipeline.md),
+  [ADR 0039](0039-shared-design-tokens-and-elements.md),
+  [ADR 0047](0047-module-ci-harness.md),
+  [ADR 0048](0048-generic-image-and-installed-module-storage.md),
+  [ADR 0050](0050-module-database-abi-v1.md),
+  [ADR 0051](0051-module-package-license-material.md),
+  [ADR 0052](0052-reviewed-license-supplements.md)
+
+## Context
+
+Modules are independently versioned products in their own repositories (ADR 0021). Yet no module can
+be built outside Ekklesia's monorepo today. Signage's continuous integration clones the platform at
+a pinned commit, places Signage under `modules/signage`, and installs and builds inside that
+workspace, because its Ekklesia dependencies exist only as `workspace:*` packages.
+
+An investigation of the current packages found the following.
+
+- **One coordinated version.** Every `@ekklesia/*` package, and the platform, is version 0.1.2. The
+  release process already bumps them together. The platform reports its Module SDK version, which
+  manifests' `compatibility.moduleSdk` ranges are checked against (ADR 0006), by reading
+  `@ekklesia/module-sdk`'s own package version.
+- **The tarballs already stand alone.** `pnpm pack` rewrites `workspace:*` ranges to exact versions,
+  and each tarball carries only its built `dist`, declarations, and `LICENSE`. But every package's
+  `prepack` runs a command at the monorepo root, and `@ekklesia/typescript-config` is marked
+  `private`.
+- **The SDK exposes everything.** `@ekklesia/module-sdk` re-exports the whole `@ekklesia/contracts`
+  barrel. That includes contracts no module needs, such as authorization and identity, and the
+  legacy Drizzle `ModuleDatabase` type. `@ekklesia/contracts` depends on `drizzle-orm` for that type,
+  so every module install pulls Drizzle in.
+  - Neither the module template nor Signage imports `@ekklesia/contracts` directly.
+- **Frameworks are declared twice.** `@ekklesia/ui` lists `react`, and `@ekklesia/module-sdk` lists
+  `drizzle-orm`, as both a dependency and a peer dependency. That invites a second copy of a runtime
+  that must be single within one module bundle.
+- **The canonical packager assumes the monorepo**, in two ways:
+  - it finds the module's Node.js range only through an enclosing `pnpm-workspace.yaml`;
+  - it decides that an Ekklesia package is the platform's own, not third-party, because its real
+    path does not contain `node_modules`.
+
+  An `@ekklesia/*` package installed from a registry would therefore be treated as third-party.
+  Packaging would omit it from `incorporates` and skip the Module SDK compatibility check.
+- **The registry and its hosts.**
+  - The current private host is a Gitea 1.27.2 server. Its npm registry is enabled for the
+    organization, and that endpoint and the repositories are currently readable anonymously.
+  - pnpm leaves a tarball URL out of its lockfile only when the URL has the canonical
+    `<registry>/<name>/-/<name>-<version>.tgz` form. Gitea advertises another form, so lockfiles
+    produced against Gitea name the Gitea host.
+  - The integrity hashes in those lockfiles are independent of the host.
+
+## Decision
+
+### The npm registry protocol, not a provider
+
+Ekklesia's module-development packages are distributed over the **standard npm registry protocol**,
+and modules install them with ordinary pnpm or npm commands.
+
+- **No provider is part of the architecture.** Not Gitea, GitHub, npmjs, or any other. A module
+  repository depends on the protocol and on a scope-to-registry mapping in normal npm/pnpm
+  configuration.
+- **Gitea may host the private phase.** It is a host for this phase, not a permanent decision.
+- **No host-neutral lockfile or Ekklesia proxy is required.** Moving to another registry may need a
+  one-time change of a module's registry configuration and a regeneration of its lockfile. The
+  integrity hashes keep verifying the package content across such a move.
+
+A module repository's registry configuration is, for example:
+
+```ini
+# .npmrc, committed: where the @ekklesia scope lives, and nothing secret.
+@ekklesia:registry=https://<registry endpoint>/
+```
+
+```ini
+# User or CI configuration, never committed: the credential, from the environment.
+//<registry endpoint>/:_authToken=${EKKLESIA_PACKAGES_TOKEN}
+```
+
+### The public package set
+
+Only packages a module author needs are published. Nothing is published merely because it exists in
+the workspace.
+
+| Category | Packages |
+| --- | --- |
+| Author API | `@ekklesia/module-sdk`, `@ekklesia/module-database`, `@ekklesia/module-ui-sdk`, `@ekklesia/design-tokens` |
+| Tooling | `@ekklesia/module-ui-build`, `@ekklesia/module-pack`, `@ekklesia/typescript-config` |
+| Pre-1.0 component API | `@ekklesia/ui`: publishable, explicitly unstable before 1.0 |
+| Implementation dependency only | `@ekklesia/contracts`: may be published because the packages above depend on it, but it is **not** a supported direct module-author API |
+| Never published | `@ekklesia/core`, the applications, `@ekklesia/module-ui-host`, `@ekklesia/module-template`, and every other platform internal |
+
+### A curated SDK surface
+
+Before the first external publication, the author-facing SDK is narrowed.
+
+- **A curated API.** `@ekklesia/module-sdk` exposes what a module author needs, and no longer
+  re-exports the complete `@ekklesia/contracts` barrel.
+- **No forced Drizzle.** The stable SDK root does not make Drizzle a dependency of modules that do
+  not use it.
+- **No legacy database contract.** The legacy Drizzle database contract (ADR 0016's facade type) is
+  not part of the standalone author-facing surface. Core still serves the legacy facade for its
+  deprecation window (ADR 0050). This decision only keeps its type out of what new standalone
+  modules build against.
+- **Drizzle support lives in one place.** Drizzle-specific helpers belong to the
+  `@ekklesia/module-database` Drizzle adapter (ADR 0050).
+
+### Dependency rules
+
+These rules apply to the published packages:
+
+- **React and ReactDOM** are peer dependencies of the public UI packages, plus development
+  dependencies for those packages' own builds and tests. This does not change ADR 0023: a module UI
+  artifact still bundles React. The peer only ensures there is one React in that bundle, the
+  module's own.
+- **Drizzle** is an optional peer dependency only where the Drizzle adapter needs it.
+- **Real implementation dependencies,** at run time or build time, remain normal dependencies.
+
+These rules apply to a module repository:
+
+- **Runtime and module-code packages** go in `dependencies`: the Author API packages, `@ekklesia/ui`,
+  React, and the module's ORM if it uses one.
+- **Build tooling and configuration** go in `devDependencies`: `@ekklesia/module-ui-build`,
+  `@ekklesia/module-pack`, `@ekklesia/typescript-config`, and type packages.
+
+### Versioning
+
+- **One coordinated version during 0.x.** Every public Ekklesia module-development package uses one
+  release version, equal to the platform release version. The version the platform reports for
+  `moduleSdk` compatibility is therefore the version of the packages a module was built with.
+- **No mixed trains.** Within a published train, Ekklesia-owned dependencies name the coordinated,
+  tested version, never a version from another train.
+- **Ranges in source, exact artifacts in lockfiles.** A module may declare compatible ranges in its
+  source `package.json`; its lockfile pins exact artifacts with their integrity hashes.
+- **`@ekklesia/module-pack` is pinned exactly.** A module repository pins it in its source
+  `package.json`, not only in its lockfile, because its version affects the package it produces.
+- **Independent package versions are deferred.**
+
+### Standalone packaging
+
+- **No monorepo checkout.** A standalone module builds and packages from its own repository and its
+  installed dependencies.
+- **Its own Node.js range.** The module declares its own Node.js compatibility, preferably in
+  `engines.node`, and the canonical packager reads it from there or from an explicit option. It
+  never requires an enclosing `pnpm-workspace.yaml`.
+- **Ekklesia packages recognized by identity.** The canonical packager recognizes Ekklesia-owned
+  installed packages by explicit package identity and metadata, never by workspace path. So
+  `incorporates` and the Module SDK compatibility check (ADR 0049) work the same whether a package
+  came from the monorepo or from a registry. Ekklesia packages are never reported as third-party
+  software (ADR 0051).
+- **No monorepo-root commands at install time.** Publishing workflows for the public packages run
+  their build in the platform's release pipeline. Nothing in a published package runs a
+  monorepo-root command when a consumer installs or packs it.
+
+### Supply chain
+
+- **Immutable versions.** A version is never republished with other content, and never withdrawn to
+  be reused.
+- **Lockfiles.** pnpm lockfile integrity is part of the reproducibility model: modules install with a
+  frozen lockfile.
+- **Release CI proves the tarballs before publication.** It must:
+  1. build and pack the public package set;
+  2. inspect every tarball: only the intended contents, a `LICENSE`, and no `workspace:` range;
+  3. install those tarballs into a clean standalone module fixture, outside any monorepo;
+  4. prove there that the fixture builds, packages with the canonical packager, and verifies.
+
+  Only then are the versions published.
+- **Signing and provenance are deferred.**
+
+### Registry access and the private phase
+
+- **No secrets in module repositories.** Registry configuration for the scope is normal npm/pnpm
+  configuration.
+- **Credentials from the environment.** Read and publish credentials come from environment or user
+  configuration: a read credential in module CI where reads need one, and a publish credential only
+  in Ekklesia's release pipeline.
+- **No permanent provider.**
+- **Verify access before the first publication.** Check the chosen registry's actual private and
+  read-access behaviour first. Ekklesia's packages must not be published unintentionally to a
+  registry that serves them anonymously while Ekklesia is not public.
+
+### The release workflow
+
+During 0.x, public package releases form a **coordinated SDK train** associated with platform
+releases:
+
+1. build;
+2. pack;
+3. standalone tarball smoke (see [Supply chain](#supply-chain));
+4. publish immutable versions;
+5. downstream module CI installs and tests those versions.
+
+### Signage
+
+The intended result is a normal standalone Signage repository:
+- versioned `@ekklesia/*` dependencies;
+- its own lockfile;
+- continuous integration that installs, builds, packages, and verifies on its own.
+
+That CI must not clone Ekklesia or place Signage under `modules/`. The migration itself is a separate
+change.
+
+## Consequences
+
+- A module repository is an ordinary pnpm project. Clone it, install, build, and package it with the
+  canonical packager, with no Ekklesia checkout.
+- Module authors see a smaller, deliberate API, and the platform can change its internal contracts
+  without breaking them.
+- One coordinated version keeps compatibility simple: SDK version X is what platform version X
+  reports and accepts. The cost is republishing unchanged packages with each platform release.
+- A registry move costs each module a configuration change and a lockfile regeneration, but no
+  source change. Package content stays verifiable by integrity hash throughout.
+- Before the first publication, the SDK surface must be curated and the packager's two monorepo
+  assumptions removed. Both are breaking for code that relied on them.
+- ADR 0047, still proposed, assembles a module into the platform workspace to test it. Before it is
+  accepted it must instead consume published packages and canonical module packages, consistent with
+  this decision and with ADR 0048.
+
+## Alternatives
+
+- **Git URL, tag, or commit dependencies.** Rejected: they tie modules to one Git host, need a build
+  on every install because `dist` is not committed, and cannot express version ranges.
+- **Release-asset tarball URLs.** Rejected: each dependency becomes a host-specific URL, and ranges
+  cannot be resolved.
+- **OCI artifacts for packages.** Rejected: npm and pnpm cannot install from them. (A harness image
+  is a different matter; see ADR 0047.)
+- **Vendoring Ekklesia packages into each module repository.** Rejected: the copies drift, updates
+  are manual, and there would be no single canonical SDK.
+- **Requiring host-neutral lockfiles, or an Ekklesia registry proxy that rewrites tarball URLs.** Not
+  required: a one-time lockfile regeneration on a registry move is an acceptable cost, and integrity
+  hashes already keep content verifiable. Ekklesia may still choose a stable endpoint later.
+- **Publishing `@ekklesia/contracts` as a direct author API.** Rejected: it holds platform-wide
+  contracts. Modules get a curated surface through the SDK packages.
+- **Externalizing React from module UI bundles to share one runtime.** Rejected again: ADR 0023's
+  reasoning stands, and peers only prevent duplicates within one bundle.
+- **Independent versions per package now.** Deferred: during 0.x a coordinated train is simpler for
+  module authors and matches how the platform reports its SDK version.
+
+## Deferred
+
+- Provisioning a registry, and its credentials.
+- Public publication on npmjs or any other public registry.
+- Package signing and provenance.
+- Independent package versioning.
+- Dashboard and UI redesign.
+- The Signage migration itself.

docs/architecture/decisions/0054-public-package-reads-before-launch.md

@@ -0,0 +1,85 @@
+# 0054: Ekklesia's module-development packages are publicly readable before launch
+
+- Status: Accepted
+- Date: 2026-10-08
+- Supersedes (partial): [0053](0053-standalone-module-development-packages.md) — only where it
+  describes the package phase before launch as private: "Gitea may host the private phase", the
+  read credential for module CI in "Registry access and the private phase", and its requirement
+  that packages not be served anonymously while Ekklesia is not public. Every other part of that ADR
+  remains accepted and unchanged: the npm registry protocol, the public package set and its
+  boundaries, the curated SDK, the dependency rules, the coordinated package train, exact release
+  artifacts, standalone module builds, provider portability, supply chain and immutability, and the
+  credential handling for publishing.
+- Related: [ADR 0049](0049-module-package-v1.md)
+
+## Context
+
+ADR 0053 decided how Ekklesia's module-development packages (`@ekklesia/*`) are built, released, and
+distributed over the npm registry protocol. It assumed that the phase before Ekklesia's public
+launch would be private: module CI would carry a read credential where reads needed one, and the
+first publication had to make sure the registry would not serve the packages anonymously.
+
+Checking the chosen host before the first publication showed what keeping the packages private would
+take:
+
+- Gitea 1.27.2 decides package read access by the package **owner's** visibility, never a
+  repository's. The `River_of_Glory_Church` owner is a public organization, so its packages are
+  readable anonymously.
+- That organization's repositories, Ekklesia's source among them, are already publicly readable.
+- The instance allows self-registration, so "limited" visibility, readable by any signed-in user,
+  is readable by anyone who creates an account.
+- Private packages would therefore need a separate private package owner, plus reader accounts and
+  read tokens for every module repository, every module's CI, and every developer.
+
+The project owner has decided that Ekklesia is not secret. Its source is public; the project is
+simply not being launched or promoted yet. Hiding the packages built from that public source would
+protect nothing, and would still cost every module author an account and a token.
+
+## Decision
+
+1. **Ekklesia's module-development packages may be anonymously readable before the project's public
+   launch.** This covers the public package set of ADR 0053: search, metadata, and download.
+2. **Readability is not a launch, and promises nothing more.** Public readability does not mean:
+   - that Ekklesia has been publicly launched;
+   - that the APIs are stable beyond the project's pre-1.0 SemVer policy;
+   - that third-party production use is supported;
+   - that a marketplace or public module ecosystem exists.
+3. **Reading needs no authentication in this phase.** Installing `@ekklesia/*` needs no account,
+   reader account, read token, or authenticated install workflow. A module repository configures only
+   the scope's registry.
+4. **Publication stays authenticated and tightly controlled.** Only Ekklesia's release process
+   publishes, with one dedicated publisher credential that holds nothing beyond package write
+   access, used only by that process, as ADR 0053's credential handling for publishing already
+   requires.
+5. **Published versions stay immutable by Ekklesia policy.** A published version is never deleted or
+   republished with other bytes, whatever the registry technically allows.
+6. **The current Gitea owner is an acceptable host.** The `River_of_Glory_Church` package namespace
+   on the current Gitea may host this phase, as long as publishing permission stays restricted to
+   the publisher. No private package organization is needed.
+7. **A public launch is a separate decision.** Launching or promoting Ekklesia publicly, and anything
+   that changes for its packages then, is a product and release decision this ADR does not make.
+
+## Consequences
+
+- **Module authors and module CI need no Ekklesia credential.** The committed `.npmrc` scope mapping
+  is the whole registry configuration. ADR 0053's example of a read credential in user or CI
+  configuration is no longer needed in this phase.
+- **ADR 0053's pre-publication access check changes meaning.** It now confirms that anonymous reads
+  work as intended and that publishing is refused without the publisher's permission, rather than
+  that reads are private. The disposable-registry suite proves both, and the publication tool can
+  require an anonymous download to match each published artifact.
+- **Restricting publishing is now the whole access boundary**, so the publisher credential's scope,
+  where it is held, and who can reach it matter all the more.
+- **Making the packages private again would be a new decision.** Package names, versions, and
+  contents already published stay public, because a published version is never deleted.
+
+## Alternatives considered
+
+- **A private package organization on the same Gitea.** Rejected: it hides nothing that is not
+  already public in the source, and it requires reader accounts and tokens for every module
+  repository, its CI, and every developer.
+- **"Limited" package visibility.** Rejected: with self-registration open, anyone can read anyway,
+  while the configuration suggests otherwise.
+- **Requiring sign-in for the whole instance.** Rejected: it would also hide the public
+  repositories.
+- **Another registry for a private phase.** Unnecessary once reads are public.

docs/architecture/decisions/0055-corresponding-source-artifacts.md

@@ -0,0 +1,189 @@
+# 0055: Native redistributable packages carry corresponding-source artifacts
+
+- Status: Accepted
+- Date: 2026-10-09
+- Extends: [0049](0049-module-package-v1.md). ADR 0049 withholds distributable-release status from a
+  package until its licence handling is proven. This ADR adds what proving it means for a native
+  package that redistributes copyleft code: a sibling corresponding-source artifact, and a
+  fail-closed gate for public distribution. Module Package v1 is unchanged, and `packageFormat`
+  stays **1**.
+- Decides: the item [ADR 0052](0052-reviewed-license-supplements.md) deferred, "the legal and
+  compliance determination of source obligations for each redistributed binary, and how a
+  determination is recorded", as a project policy. Reviewed supplements are unchanged in purpose
+  and format.
+- Related: [ADR 0051](0051-module-package-license-material.md), whose rules for a module's own
+  licence are unchanged.
+
+## Context
+
+A native Module Package (ADR 0049) copies native dependencies into its `node_modules` exactly as
+built. The first one, the packager's native proof with sharp, redistributes
+`@img/sharp-libvips-linux-x64`. That is one shared object with about 29 libraries built into it.
+Several are under the GNU LGPL, and cairo and some Rust crates are under the MPL.
+
+ADR 0052 made the licence and notice side work. A reviewed supplement adds the licence, copyright,
+and notice files the package omits, with the exact upstream source each came from. But ADR 0052 was
+explicit that carrying material is not meeting obligations. The LGPL and the MPL also oblige whoever
+distributes the binary to make the corresponding source available. For a library linked into a
+larger work, that includes what a recipient needs to rebuild the library and use a modified version.
+Recording upstream URLs does not do that: URLs move, tags are rewritten, and a mirror is somebody
+else's promise.
+
+Until this was decided, every native package containing such components was blocked from public
+distribution, and the blocker had no defined way to be lifted.
+
+## Decision
+
+### Native packages may contain copyleft native dependencies
+
+A native Module Package may redistribute native dependencies under the LGPL, the MPL, or a similar
+licence with source obligations. It may be **distributed publicly** only when it is released
+together with a **corresponding-source artifact** that meets this ADR. A package whose artifact
+cannot be produced and verified is not approved for public distribution.
+
+This is Ekklesia's **project compliance policy**: a conservative rule the project holds itself to.
+It is not legal advice, and it is not legal certification. Repository review of the artifact, its
+inputs, and its instructions is project and code review. It does not replace professional legal
+review, and nothing built from this ADR may claim that it does.
+
+### Supplements and source artifacts do different jobs
+
+- **A reviewed supplement (ADR 0052)** identifies and verifies the licence and notice material for a
+  redistributed binary. It travels inside the package, in `THIRD_PARTY_NOTICES`.
+- **A corresponding-source artifact** carries the source, patches, build definitions, and rebuild
+  and relink instructions for the covered native components. It travels beside the package, as a
+  separate release artifact.
+
+A supplement alone never satisfies the source-availability policy. A source artifact never replaces
+the supplement or `THIRD_PARTY_NOTICES`.
+
+### What the artifact contains
+
+For each covered native dependency the package redistributes, the artifact contains:
+
+- the exact source the binary was built from, as bytes, not as references:
+  - its build definitions;
+  - the source archive of every library compiled into it;
+  - every patch the build applied;
+  - every source package a language package manager resolved for the build;
+  - the source of any runtime library the toolchain linked into it;
+- the licence and copyright material: the reviewed supplement, and the files inside the sources;
+- **instructions** that are technically actionable. They name what the artifact corresponds to and
+  its target, and say how to apply the patches and rebuild the covered library. They also say how a
+  rebuilt or modified library replaces the redistributed one in the installed module, and which
+  toolchain and configuration to use, or point to the included build definitions;
+- a deterministic, machine-readable manifest of every component and file, each with its digest,
+  plus the human-readable provenance.
+
+Components that are not part of the binary are left out, each with its reason recorded: build-only,
+test-only, or another platform's. The exception is a build-time input needed to rebuild the covered
+library, such as a source package a build script requires. That is included and marked as
+build-only. Host system libraries and general-purpose build tools are not redistributed, and the
+instructions name the versions they need.
+
+### It is tied to exact inputs, and verified before it is written
+
+- **Bound to the binary.** An artifact names each covered dependency by package name, version, and
+  the content digest a supplement is matched by (ADR 0052). It names the module identity and target
+  of the package it accompanies. An artifact for one version of a binary never satisfies another.
+- **From reviewed inputs only.** The inputs come from a checked-in, reviewed **source recipe** per
+  covered dependency version. The recipe records each component's name, version, origin,
+  relationship to the binary, and licence material, and each source file's and patch's size and
+  SHA-256.
+- **Acquisition is separate from construction.** Obtaining the recorded bytes may use the network,
+  in an explicit preparation step that stores them in a local cache keyed by content digest.
+  Constructing the artifact is offline. It reads only the cache and checked-in files, verifies every
+  byte against the recipe before writing anything, and never fetches or trusts a current upstream
+  response.
+- **Deterministic.** The same inputs produce the same artifact, byte for byte, in any working
+  directory: normalized relative paths, fixed ownership, modes, and timestamps, sorted entries, and
+  no machine-specific path.
+
+### Binary and source are linked by recorded digests
+
+A public release of a native package with covered components consists of sibling artifacts:
+
+- the Module Package archive and its SHA-256 (ADR 0049);
+- the corresponding-source archive and its SHA-256;
+- machine-readable **redistribution metadata** recording:
+  - the package archive's name and SHA-256;
+  - the module identity and target;
+  - each covered dependency's name, version, licence, and content digest;
+  - the supplement and recipe it was assembled from;
+  - the source archive's name and SHA-256, and the SHA-256 of its manifest;
+- a **release notice**, displayed alongside the binary wherever it is offered. It says, in
+  substance, that the release includes third-party software under licences including the GNU LGPL
+  or the MPL, and that corresponding source and build and relink materials for the covered native
+  dependencies are in the accompanying artifact, named by its exact file name and SHA-256.
+
+A reviewer can therefore tell exactly which source artifact corresponds to which redistributed
+binary, from digests, without guessing from file names. The source archive is never placed inside
+the Module Package. `THIRD_PARTY_NOTICES` stays as it is, and never duplicates the source.
+
+### Public distribution fails closed
+
+Building and testing packages stays unrestricted: the packager produces native packages exactly as
+before, for development, CI, and private use. **Public redistribution approval** is a separate gate.
+For a package intended for public distribution, the gate requires that:
+
+- the package's native dependency inventory is known;
+- every covered dependency has its reviewed supplement and source recipe;
+- the corresponding-source artifact is present;
+- every digest matches;
+- the artifact's manifest validates against the recipe and the archive's own contents;
+- the release notice names the exact artifact.
+
+If any requirement fails, approval fails. Bundled (not copied) code under such a licence is not
+handled by this mechanism, so the gate refuses it rather than approving it.
+
+### Retention, and no rewriting history
+
+- Ekklesia keeps a release's corresponding-source artifact for as long as it distributes, or
+  supports access to, the matching binary release. Nothing deletes one automatically while that
+  binary remains available.
+- The bytes of a source artifact for an existing binary release are never replaced under the same
+  identity.
+- A correction is a new release, or an explicitly versioned compliance artifact that the
+  redistribution metadata names. History is never silently replaced.
+
+### What this ADR does not do
+
+- It does not change any module's own licence, or ADR 0051's rules for it. The module's own source
+  obligations are met by the module's own repository, as before.
+- It does not make **runtime downloading** an acceptable workaround. Fetching a copyleft library at
+  run time instead of redistributing it moves the obligation rather than meeting it, makes
+  installations depend on a third party, and breaks ADR 0048's self-contained installed modules. It
+  is not the preferred path.
+- It does not change Module Package v1, the verifier's acceptance of a package, or the content of
+  existing supplements.
+
+## Consequences
+
+- Native modules that need copyleft native libraries, starting with sharp's libvips, can be
+  distributed publicly under a defined, checkable policy, instead of being blocked indefinitely.
+- Each covered dependency version needs a reviewed source recipe, as it needs a reviewed supplement.
+  A dependency bump needs both before public distribution works again.
+- Releases carry an artifact many times larger than the package itself (about 200 MB for libvips
+  1.3.4, against a 9 MB package), and Ekklesia commits to retaining it.
+- Constructing the artifact needs the verified source cache. Acquisition happens once per recipe,
+  not on every build.
+
+## Alternatives
+
+- **Treat supplements, source URLs, or a written offer as sufficient.** Rejected: URLs and offers
+  depend on third parties and on time. This policy requires the source itself, retained with the
+  release.
+- **Put the source inside the Module Package.** Rejected: installations would store hundreds of
+  megabytes they never need, and the package format would change for a distribution concern.
+- **Download sources while constructing the artifact.** Rejected: a release would depend on mutable
+  remote responses. Acquisition is explicit and verified, and construction is offline.
+- **Download native libraries at run time.** Rejected, as above.
+- **Per-dependency special cases in code.** Rejected for the same reason as in ADR 0052: recipes are
+  reviewed data, and the mechanism knows no particular library.
+
+## Deferred
+
+- Hosting and serving source artifacts for published module releases, and the release CI that runs
+  the gate and keeps the verified source cache.
+- Corresponding source for bundled copyleft code, if a module ever needs it.
+- Recipes provided by module repositories, alongside the question ADR 0052 deferred for supplements.

docs/architecture/decisions/0056-device-credentials-last-while-in-use.md

@@ -0,0 +1,76 @@
+# 0056: A device credential lasts while the device is in use
+
+- Status: Accepted
+- Date: 2026-10-12
+- Supersedes: the "Session lifetime" section of [0036](0036-managed-device-identity-and-pairing.md).
+  Everything else in ADR 0036 — the device as its own principal, pairing, revocation on every
+  request, re-pairing as a new identity — is unchanged.
+
+## Context
+
+ADR 0036 gave a device credential a fixed 180 days from pairing. The intent was that a screen on a
+ceiling should not need re-pairing on a short cycle, and that an abandoned screen should eventually
+stop being an identity.
+
+A fixed horizon does the second and fails the first. Every screen in the building expires on the
+anniversary of its pairing whether or not it was in use the day before, and drops to a pairing code
+in front of the congregation until someone with Dashboard access walks to it. For screens paired
+together, that is every screen at once. Nothing about a working, unrevoked screen is less trustworthy
+on day 181 than on day 179; only the calendar changed.
+
+## Decision
+
+**The 180 days are an idle window, not a lifetime.** A device credential is accepted while the
+device was last seen less than 180 days ago (or, if it has never been seen, was paired less than 180
+days ago). `lastSeenAt` already moves forward on authenticated device requests (throttled to one
+write per 15 minutes), so the server-side window slides with use and needs no new column or
+migration.
+
+**The browser's copy is renewed by the host, not rotated.** The display descriptor —
+`GET /api/v1/module-displays/<module>`, which every display requests when it starts, when it
+reconnects, and periodically while it runs — re-issues the device cookie that authenticated the
+request with a fresh 180-day `Max-Age` and the same attributes as at pairing (`HttpOnly`,
+`SameSite=Strict`, host-only, `Path=/`, `Secure` on https). The value is unchanged.
+
+Renewal happens only for a request that already resolved to a live, unrevoked device. A revoked,
+expired, or unknown credential is anonymous, as before, and is never renewed; a person viewing a
+display never receives a device cookie.
+
+**Revocation remains the boundary.** It is still checked on every request, and an administrator's
+revoke still takes effect immediately.
+
+## Why not rotate
+
+Rotation (issue a new value, invalidate the old) would bound how long any one stolen value works and
+could reveal a cloned credential. For an unattended screen it trades that for a new way to strand
+the display: a renewal response lost to a network drop, a power cut, or a browser that never
+persisted the new cookie leaves the screen holding a dead credential and showing a pairing code,
+which is the failure this decision exists to remove. A refresh-token scheme with overlap windows
+could avoid that, at the cost of real complexity in the one place mistakes are invisible until a
+wall goes dark. That is not justified while revocation is immediate and a device principal can only
+read the displays it was paired for.
+
+## Consequences
+
+- A screen that is used at least once every 180 days stays paired until an administrator revokes
+  it. An abandoned screen still stops being an identity 180 days after it was last seen.
+- Existing credentials need no migration. A screen paired under the fixed rule is renewed the next
+  time it requests its descriptor, provided its browser still holds the cookie.
+- A stolen device credential stays usable for as long as anyone keeps using it, until it is revoked.
+  Under ADR 0036 it was usable for at most 180 days from pairing. The exposure is bounded by what a
+  device may do — the display permissions of the module it was paired for, never a person's access
+  — and by revocation. Operators can see each device's last-seen time and revoke anything
+  unexpected.
+- A credential is not bound to a browser or network. Like a human session cookie, whoever presents
+  it is the device.
+
+## Alternatives
+
+- **Keep the fixed 180 days.** Rejected: every in-use screen fails on a schedule, and screens paired
+  together fail together.
+- **Never expire.** Rejected: an abandoned or forgotten screen would remain an identity forever, and
+  its credential would never stop working without someone remembering to revoke it.
+- **Rotate on renewal.** Rejected for now; see above.
+- **Renew on every authenticated response.** Rejected: principal resolution happens deep in shared
+  middleware that never writes responses. One endpoint every display already requests periodically
+  is enough, and keeps the behaviour in one visible place.

docs/architecture/decisions/README.md

@@ -44,7 +44,7 @@ ADRs capture durable choices that affect more than one package or phase.
 - [0033: Display UI is a separate, permission-gated module entrypoint](0033-display-kiosk-host-contract.md) — Accepted
 - [0034: Dashboard browser authentication is host-owned and principal-first](0034-host-owned-browser-authentication.md) — Accepted
 - [0035: The first platform owner is created by an operator command, never by a browser](0035-initial-platform-owner-bootstrap.md) — Accepted
-- [0036: A display device is its own principal, paired by an administrator](0036-managed-device-identity-and-pairing.md) — Accepted
+- [0036: A display device is its own principal, paired by an administrator](0036-managed-device-identity-and-pairing.md) — Accepted (session lifetime superseded by 0056)
 - [0037: Outbound email is a host-provided transport, and SMTP is its first provider](0037-host-provided-outbound-email.md) — Accepted
 - [0038: Email verification and password recovery, with a trusted-bootstrap exception](0038-email-verification-and-password-recovery.md) — Accepted
 - [0039: Shared design tokens and foundational elements](0039-shared-design-tokens-and-elements.md) — Accepted
@@ -58,4 +58,10 @@ ADRs capture durable choices that affect more than one package or phase.
 - [0047: Every module proves itself inside Ekklesia, with one harness the platform publishes](0047-module-ci-harness.md) — Proposed
 - [0048: Ekklesia ships one generic image, and installed modules live outside it](0048-generic-image-and-installed-module-storage.md) — Accepted
 - [0049: A module release is one immutable, self-contained package: Ekklesia Module Package v1](0049-module-package-v1.md) — Accepted
-- [0050: Module Database ABI v1: modules and Core exchange SQL, never ORM objects](0050-module-database-abi-v1.md) — Proposed
+- [0050: Module Database ABI v1: modules and Core exchange SQL, never ORM objects](0050-module-database-abi-v1.md) — Accepted
+- [0051: Module packages declare their own license and carry its text](0051-module-package-license-material.md) — Accepted
+- [0052: Reviewed license supplements cover redistributed dependencies whose packages omit required material](0052-reviewed-license-supplements.md) — Accepted
+- [0053: A module builds outside the monorepo, from Ekklesia packages published over the npm registry protocol](0053-standalone-module-development-packages.md) — Accepted
+- [0054: Ekklesia's module-development packages are publicly readable before launch](0054-public-package-reads-before-launch.md) — Accepted
+- [0055: Native redistributable packages carry corresponding-source artifacts](0055-corresponding-source-artifacts.md) — Accepted
+- [0056: A device credential lasts while the device is in use](0056-device-credentials-last-while-in-use.md) — Accepted

docs/architecture/platform-architecture.md

@@ -609,7 +609,7 @@ a sandbox: it is `open` precisely because module code is trusted, same-realm cod
 
 [ADR 0041](decisions/0041-module-browser-contributions.md) lets one module contribute a browser
 renderer to a capability another module provides — the browser half of the capability system Core has
-had since ADR 0006. `manifestVersion: 7` declares a namespaced id, its own version, a target
+had since ADR 0006. `manifestVersion: 8` declares a namespaced id, its own version, a target
 capability, a compatible range, and one artifact. That is the complete list: there is no payload
 schema, slot, ordering, or rendering hint anywhere in the platform, so Core cannot learn what a
 "slide" is because the declaration cannot express it. Discovery resolves the artifact through the
@@ -679,12 +679,40 @@ Module Package v1, a deterministic `.tar.gz` with its SHA-256.
 - **The packager.** `@ekklesia/module-pack` bundles the module's backend with every pure-JavaScript
   dependency, the SDK, contracts, and Drizzle included. It copies the built browser artifacts and
   migrations, generates the runtime `package.json`, `ekklesia.package.json` with every file's digest,
-  and `THIRD_PARTY_NOTICES`, and writes the archive.
+  copies the explicitly supplied module `LICENSE` bytes, generates `THIRD_PARTY_NOTICES` for bundled
+  third parties, and writes the archive. The source module's string SPDX expression is required and
+  becomes the package metadata's authoritative `license`; the packager neither infers nor downloads
+  license material.
+  - **Native target (`linux-x64-glibc`).** Native or platform-specific dependencies stay outside
+    the bundle. Each one is copied with exactly its production runtime closure, as real files flat
+    under the package's `node_modules/`, and only the platform packages that match the target are
+    included. The package's `runtime` records the Node-API version and minimum glibc version, both
+    read from the native binaries themselves.
+  - **License supplements.** Where a redistributed dependency omits required licence material,
+    reviewed supplements checked in with the packager add it
+    ([ADR 0052](decisions/0052-reviewed-license-supplements.md)). Each supplement matches one exact
+    package name, version, and content digest; anything else fails closed.
+  - **Corresponding source.** A native package that redistributes code under the LGPL, the MPL, or
+    a similar licence is approved for public distribution only together with a sibling
+    corresponding-source artifact. The artifact is built offline from a reviewed source recipe and a
+    verified source cache, and linked to the package by digest
+    ([ADR 0055](decisions/0055-corresponding-source-artifacts.md)). Building and testing packages is
+    unaffected.
 - **The verifier.** Core's `verifyModulePackage` reads the archive in memory and refuses links,
   special files, and escaping paths. It checks every digest and identity, the target and runtime,
-  and the transitional Drizzle agreement, runs the platform's own module and migration validation,
+  runs the platform's own module, schema, and migration validation, and loads the backend once in a
-  and loads the backend once in a short-lived process with an empty environment. Only then does it
+  short-lived process with an empty environment. Only then does it copy the package to a requested
-  extract anything.
+  output directory. In the hardened container invocation, `/tmp` remains `noexec`; the temporary
-- **What exists today.** Only the `any` target. Drizzle agreement is recorded as transitional, not a
+  candidate lives on a dedicated, bounded executable tmpfs because a native addon's code must be
-  database ABI. [ADR 0050](decisions/0050-module-database-abi-v1.md), still proposed, defines the
+  mapped executable to load.
-  Module Database ABI that removes it for modules that declare that ABI.
+  - **A native package's host checks.** It is accepted only on a host whose operating system, CPU,
+    C library family and version, and Node-API version Node.js itself reports as compatible.
+  - **ELF files.** Every ELF file in it must be built for the target's machine.
+  - **What an `any` package may not hold:** `node_modules`, addons, and ELF files.
+- **What exists today.** The `any` and `linux-x64-glibc` targets. No other operating system or CPU
+  target exists yet. A manifest-v8 ABI module carries no
+  `transitional.databaseRuntime`; Drizzle may be bundled as its private implementation detail, and
+  Core validates plain schema metadata without comparing ORM versions. A version 8 module that
+  omits `database` remains on the temporary legacy facade and keeps ADR 0049's exact transitional
+  Drizzle agreement. The canonical template now demonstrates ABI v1. The legacy facade still
+  exists.

docs/architecture/repository-boundaries.md

@@ -136,11 +136,16 @@ These rules map platform ownership to filesystem and package boundaries. The exe
   declared by the consumer.
 - Code a workspace package ships (its `src/` and `bin/`, excluding tests and declaration files)
   declares every runtime import in `dependencies` or `optionalDependencies`. A peer declaration may
-  stay beside it, but never replaces it: a workspace package is linked into its consumers as a
+  stay beside it, but ordinarily never replaces it: a workspace package is linked into its consumers
-  directory, so its imports resolve from its own `node_modules`, where a consumer never satisfies a
+  as a directory, so its imports resolve from its own `node_modules`, where a consumer never
-  peer, and a production install (`pnpm install --prod`, as the production image runs) omits
+  satisfies a peer, and a production install (`pnpm install --prod`, as the production image runs)
-  development dependencies. Type-only imports are exempt; a `.tsx`/`.jsx` file counts as importing
+  omits development dependencies. There are two narrow exceptions, each for one package and one
-  `react`, because the automatic JSX runtime imports `react/jsx-runtime` implicitly
+  peer. `@ekklesia/module-database`'s `drizzle-orm` peer: modules choose that compatible runtime and
+  the Module Package v1 bundler incorporates it into their self-contained backend; Core never loads
+  the adapter package. And `@ekklesia/ui`'s `react` peer (ADR 0053): the shared elements are only
+  ever bundled into browser artifacts, and the consumer's own React must be the one in the bundle;
+  no production Node.js process loads them. Type-only imports are exempt; a `.tsx`/`.jsx` file counts as importing `react`,
+  because the automatic JSX runtime imports `react/jsx-runtime` implicitly
   (`runtime-imports-are-production-dependencies`).
 - Workspace aliases are forbidden because they obscure package ownership in the dependency graph.
 - Workspace package names are unique and shared packages declare a recognized architectural role.

docs/development/api.md

@@ -1403,7 +1403,8 @@ stays declarative and database-free. See
 contract; this section covers only how `apps/api` composes and wires it.
 
 - **`ModuleDatabase`.** A restricted, typed view over `NodePgDatabase`
-  (`packages/contracts/src/module-database.ts`), exposing exactly `select`, `selectDistinct`,
+  (`core/src/modules/database.ts`, Core's own type: no published package references Drizzle, per
+  ADR 0053), exposing exactly `select`, `selectDistinct`,
   `selectDistinctOn`, `insert`, `update`, `delete`, `execute`, and `transaction`, each preserving
   Drizzle's own table-aware argument and result inference. It exposes no `$client`, no internal
   session/dialect state, no schema-bound relational `query` builder, and no connection string,

docs/development/authorization.md

@@ -138,7 +138,7 @@ enforces those permissions while the module is disabled, because it mounts no ro
 ## Module permission composition
 
 A module manifest's `permissions` array (introduced in `manifestVersion: 4`; the current strict
-manifest is version 7 — see
+manifest is version 8 — see
 [Module development](../module-development/README.md#canonical-manifest)) declares permissions in
 the exact same `PermissionDeclaration` shape — but declaring one there only proves it is
 well-formed and correctly namespaced under the module's own id; it does not, by itself, register

docs/development/releases.md

@@ -0,0 +1,370 @@
+# Releases and the public package train
+
+An Ekklesia platform release is one version. The platform image, the private workspace packages,
+and the public `@ekklesia/*` module-development packages all carry it. This page covers the order a
+release happens in and the public package train
+([ADR 0053](../architecture/decisions/0053-standalone-module-development-packages.md)): how its
+artifacts are produced, what proves them, and how exactly those artifacts are published.
+
+> **The packages are publicly readable, on purpose**
+> ([ADR 0054](../architecture/decisions/0054-public-package-reads-before-launch.md)). Anyone can
+> search, read, and install `@ekklesia/*` from the registry with no account and no token, like any
+> public npm package. That is not a public launch: Ekklesia's source is already publicly readable,
+> and the project is simply not promoted yet. Only **publishing** is restricted, to one manual,
+> authenticated workflow. Before 1.0, the APIs may change between versions under the project's
+> SemVer policy: a 0.x minor version may break them.
+
+## Where each step sits
+
+```text
+version set ─▶ build ─▶ test ─▶ pack the public package train ─▶ standalone consumer proof
+                                                                          │
+     tag and release (maintainer) ◀─ publish the exact train (manual) ◀───┘
+```
+
+1. **Version set.** A `chore(release): prepare X` pull request sets the release version: the root
+   `package.json`, every platform workspace package (the module template versions as a module, not
+   with the platform), the image build example in `deploy/README.md`, and the standalone fixture's
+   exact `@ekklesia/module-pack` pin and `@ekklesia/*` ranges
+   (`tests/fixtures/standalone-module/package.json`). The tag must point at a commit that carries
+   the version it names.
+
+   A minor version (0.x → 0.(x+1)) is a breaking release before 1.0, so manifests that declare
+   `compatibility.platform` and `compatibility.moduleSdk` as `^0.x.0` no longer match it. In the
+   same pull request, move to the new range every module built for this release (the template, the
+   standalone fixture, the native proof module), the test fixtures that model a module of the
+   current release or the current platform, and the module-development guide's examples. A patch
+   version changes none of these.
+2. **Build and test.** `pnpm verify`, the integration suite, and the deploy smoke, as for any change.
+3. **Pack the public package train.** `pnpm packages:release` (below).
+4. **Standalone consumer proof.** A module outside the repository consumes exactly those
+   artifacts (below).
+5. **Publish the exact train.** By hand, with the `Publish packages` workflow on the version-set
+   commit on `main` ([Publishing the train](#publishing-the-train)). It publishes the artifacts its
+   own run's gate (steps 3 and 4) proved, and nothing else.
+6. **Tag and release.** Unchanged: the maintainer tags the merge commit of the version-set pull
+   request. Nothing here creates, moves, or requires a tag.
+
+Steps 2 to 4 run in CI on every pull request and on `main`, and CI also publishes each proven train
+to a disposable registry (`package-publication`), never the real one. Step 5 runs only when a
+maintainer starts it.
+
+## The public package train
+
+| Package | Role |
+| --- | --- |
+| `@ekklesia/module-sdk`, `@ekklesia/module-database`, `@ekklesia/module-ui-sdk`, `@ekklesia/design-tokens` | author API |
+| `@ekklesia/module-ui-build`, `@ekklesia/module-pack`, `@ekklesia/typescript-config` | tooling |
+| `@ekklesia/ui` | publishable, pre-1.0 component API |
+| `@ekklesia/contracts` | implementation dependency of the packages above: published only because they need it, never a supported direct dependency of a module |
+
+The list lives in `scripts/package-release.ts` (`PUBLIC_PACKAGES`). Every other workspace package is
+`private`, and the release builder refuses to run if a package outside the list is publishable or
+carries the `module-development` distribution marker.
+
+- **One version.** Every package in the train has the platform release version.
+- **One train.** Every `@ekklesia/*` dependency in a packed manifest names a package of the same
+  train at exactly that version. `workspace:` ranges become those exact versions when packed.
+- **No independent versions.** A package cannot be released on its own.
+
+## Producing the release artifacts
+
+```bash
+pnpm packages:release          # writes .package-release/ekklesia-packages-<version>/
+```
+
+`scripts/package-release.ts`:
+
+1. **Refuses a modified source tree, before it builds anything.** A release is built from a
+   commit. A tree is clean when `git status` shows no change to a tracked file and no untracked file
+   that Git does not ignore. Ignored files are build output and package-manager state:
+   `node_modules`, `dist`, `.turbo`, and pnpm's `.pnpm-store`, which pnpm creates at the checkout's
+   root when the checkout is its own mount (a CI runner's workspace volume). The failure lists every
+   change. `--allow-modified` exists for local development only; its manifest then says
+   `"modified": true`, and such a release must never be published.
+2. **Checks the release set and versions** in the workspace.
+3. **Rebuilds from clean output.** It removes each public package's `dist/` and rebuilds without the
+   build cache, so output from a deleted source file can never ship. It then checks the source tree
+   again: a build that changed a tracked file, or wrote an untracked one Git does not ignore, fails
+   the release, because what is packed must be exactly the commit.
+4. **Packs each package with `pnpm pack`.** Pack-only pnpm hooks (`scripts/lib/pack-hooks.cjs`)
+   apply, never the workspace's install settings ([Reproducibility](#reproducibility)).
+5. **Inspects every tarball.** It checks:
+   - the expected name, version, and file name;
+   - a `LICENSE`, and only the `files` the manifest declares, each built file with the source it
+     came from, and no source, test, or configuration file;
+   - no `workspace:` range, no `devDependencies`, no `publishConfig`, and no install-time lifecycle
+     script;
+   - only public `@ekklesia/*` dependencies, at the train's version;
+   - the distribution marker;
+   - no local path (the checkout, the home directory, or the temporary directory) in any file.
+6. **Checks the set.** The release must hold exactly the expected tarballs: none missing, none extra.
+7. **Writes the release directory only when everything passed,** in one step. It refuses to
+   overwrite one that exists.
+
+```text
+ekklesia-packages-<version>/
+├── ekklesia-contracts-<version>.tgz
+├── ekklesia-design-tokens-<version>.tgz
+├── … one .tgz per package in the train
+├── SHA256SUMS                     `sha256sum -c SHA256SUMS` compatible
+└── ekklesia-package-train.json    the release manifest
+```
+
+### The release manifest
+
+`ekklesia-package-train.json` describes the train by content. It is provider-neutral: it names no
+registry and is not a registry catalog.
+
+```json
+{
+  "packageTrain": 1,
+  "version": "0.2.0",
+  "source": { "modified": false, "revision": "<full commit id>" },
+  "packages": [
+    {
+      "file": "ekklesia-contracts-0.2.0.tgz",
+      "integrity": "sha512-<base64>",
+      "name": "@ekklesia/contracts",
+      "role": "implementation",
+      "sha256": "<hex>",
+      "size": 87379,
+      "version": "0.2.0"
+    }
+  ]
+}
+```
+
+`integrity` is the npm `dist.integrity` form: a registry computes the same value from the same
+bytes, and a module's lockfile records it. The packages are sorted by name, and the file's bytes
+depend only on the commit.
+
+## Proving the artifacts
+
+```bash
+pnpm test:package-release      # scripts/test-package-release.sh
+```
+
+1. **Builds the train** from this checkout. Nothing is built before it.
+2. **Builds it again** from a second worktree of the same commit at another absolute path, and
+   requires both release directories to be byte-identical: every tarball, `SHA256SUMS`, and the
+   manifest.
+3. **Builds Core's verifier**, then **runs the standalone consumer proof** (`scripts/test-standalone-module.sh --release <dir>`) on
+   that release:
+   - **The release is checked first.** Every artifact must match the manifest's size, SHA-256, and
+     integrity, and the release must not be built from a modified tree.
+   - **The fixture module installs from those tarballs alone.** It is
+     `tests/fixtures/standalone-module`, copied outside the repository. Every `@ekklesia/*`
+     package, direct or transitive, resolves to its release tarball. There is no workspace link and
+     no Ekklesia source checkout. The install runs offline: third-party packages come from the
+     workspace install's own pnpm store, named explicitly because pnpm otherwise picks a store per
+     file system, so no registry is involved at all.
+   - **The lockfile matches the release.** It must record each artifact's own integrity. The module
+     then reinstalls from the lockfile alone with `--frozen-lockfile`.
+   - **The install has the right shape.** There is no `drizzle-orm`, and exactly one `react`, which
+     `@ekklesia/ui` resolves to as well. `@ekklesia/contracts` is installed only transitively: it is
+     not in the module's `package.json` and not directly under `node_modules/@ekklesia`. Every
+     installed `@ekklesia/*` package, `module-pack` included, is exactly the release version, and
+     the fixture pins `module-pack` exactly.
+   - **The module builds.** It typechecks with `skipLibCheck: false`, so every published declaration
+     it reaches is checked, then builds its backend and UI.
+   - **It packages and verifies.** It is packed with the release's own `ekklesia-pack-module`, with
+     no workspace file present. Core's verifier then verifies it. The package must:
+     - incorporate the train's packages at the release version;
+     - name the release's module-pack as its packager;
+     - credit no Ekklesia package and exactly one React;
+     - contain no local path.
+
+## Reproducibility
+
+Two builds of the same commit produce byte-identical tarballs, and CI proves it on every run.
+
+- **pnpm normalizes the tar entries.** Every entry gets the fixed modification time 1985-10-26, owner
+  0, and a mode of 0644, or 0755 when executable. The gzip header records no time.
+- **The build output is deterministic,** and source maps use relative paths.
+- **One nondeterminism came from pnpm itself.** pnpm rewrites `workspace:` ranges concurrently and
+  inserts each dependency as its lookup resolves. A package with more than one `workspace:`
+  dependency in one field could therefore be packed with those keys in a different order. Builds
+  from two checkouts of one commit differed in exactly that way: `@ekklesia/module-pack`'s
+  `package.json` ordered `@ekklesia/module-sdk` and `@ekklesia/module-database` differently.
+  - **The fix is pnpm's own hook.** The pack-only `beforePacking` hook puts each dependency map back
+    in the source `package.json`'s key order. It changes no name, range, or field. The tarball stays
+    an ordinary `pnpm pack` tarball.
+  - **The inspection enforces it.** It fails any packed map whose order differs from its source.
+- **The hook also drops `devDependencies`** from packed manifests. A consumer never installs them,
+  and a tooling package's test-only development dependencies named private workspace packages
+  outside the train.
+
+**What reproducibility does not cover:**
+- The module package the consumer proof builds is deterministic only for a fixed install layout.
+  pnpm names a `file:` tarball's install directory after its path, and bundlers keep those names in
+  comments. So the proof always installs from the same relative path. From a registry, the directory
+  is simply `<name>@<version>`.
+- Byte identity is proven for the pinned toolchain: Node.js from `.node-version`, and pnpm from
+  `packageManager`. Another Node.js or zlib build may compress differently. Each artifact's
+  integrity is recorded either way, and that, not byte identity, is what a publication step must
+  verify.
+
+## Publishing the train
+
+The registry is the Gitea npm registry under the `Zayin` owner:
+
+```text
+https://git.zayin.net/api/packages/Zayin/npm/
+```
+
+| Who | May |
+| --- | --- |
+| Anyone, signed in or not | search, read metadata, download, and install `@ekklesia/*` |
+| The publisher account, through the publish workflow | publish new versions and move dist-tags |
+| Anyone else | nothing more: publishing needs the publisher team's package write permission |
+
+### The workflow
+
+`.github/workflows/publish-packages.yml` (Actions → Publish packages → Run workflow, on `main`,
+with the release version). Nothing else can start it: no pull request or push does, and CI holds no
+registry credential at all.
+
+1. **The gate.** `package-release` runs the same credential-free gate as CI (build, reproduce,
+   consume) and hands the proven release on as a workflow artifact, with its manifest's SHA-256.
+2. **The publish job.** It builds and installs nothing. It downloads the artifact and runs
+   `scripts/publish-package-train.ts` with the secret `EKKLESIA_PACKAGES_PUBLISH_TOKEN`, which only
+   this step receives.
+3. **The publication record** is kept as an artifact of the run.
+
+### What the publication tool does
+
+`scripts/publish-package-train.ts` publishes exactly the `.tgz` files in the release directory. It
+never builds, packs, or edits a package, and it never deletes, unpublishes, or overwrites anything.
+
+1. **Validates the whole train before sending anything.** The manifest must be the one the gate
+   proved (`--manifest-sha256`), for the requested version and this commit (`--revision`), from a
+   clean tree (`"modified": false`), with exactly the nine expected packages. Every artifact's file
+   name, size, SHA-256, integrity, `SHA256SUMS` line, and the `package.json` inside it must match.
+2. **Publishes in dependency order.** Each package comes after the train packages it depends on,
+   then alphabetically. For each package:
+   - **absent:** `npm publish <file.tgz>` under the staging dist-tag `ekklesia-staging`, given the
+     artifact's absolute path (npm runs in a temporary directory of its own), after the file is
+     checked once more against the manifest. npm sends the file's own bytes and runs no script for a
+     file; the registry checks them against their integrity and stores them as they are;
+   - **present with the same bytes:** accepted as already published, and verified;
+   - **present with other bytes:** a hard stop. Nothing is deleted or overwritten, nothing after it
+     is published, and the version is burned ([Immutability](#immutability)).
+3. **Reads every package back.** The registry's metadata must name the package and version, report
+   the artifact's integrity, and list the same `dependencies`, `peerDependencies`,
+   `optionalDependencies`, and `bin` as the tarball's `package.json` (npm writes `bin` paths without
+   a leading `./`). Its tarball URL must be on the configured registry, and the tarball it serves must
+   be the release artifact, byte for byte. With `--require-public-read`, an anonymous download must
+   give the same bytes too. A package is published only once all of that holds.
+4. **Moves `latest` last.** Only when all nine are verified does `latest` move to the train, never
+   backwards past a newer version. The train is published when every package's `latest` agrees.
+5. **Writes the publication record** (`--record`).
+
+A rerun is always safe. It publishes only what is missing, accepts what is already there and
+identical, and moves only the tags that are not yet right. A train interrupted after five packages,
+or after four tags, finishes on the next run. No retry ever deletes anything.
+
+### The publication record
+
+Evidence that one train was published, not a second package catalog, and never a secret:
+
+```json
+{
+  "publicationRecord": 1,
+  "packageTrain": { "version": "0.2.0", "revision": "<commit>", "manifestSha256": "<hex>" },
+  "registry": "https://git.zayin.net/api/packages/Zayin/npm/",
+  "finalTag": "latest",
+  "completedAt": "<ISO time>",
+  "packages": [
+    {
+      "name": "@ekklesia/contracts",
+      "version": "0.2.0",
+      "file": "ekklesia-contracts-0.2.0.tgz",
+      "outcome": "published",
+      "artifact": { "sha256": "<hex>", "integrity": "sha512-…", "size": 87379 },
+      "registry": { "tarball": "<url>", "sha256": "<hex>", "integrity": "sha512-…", "publicRead": true },
+      "finalTag": "moved",
+      "distTags": { "ekklesia-staging": "0.2.0", "latest": "0.2.0" }
+    }
+  ]
+}
+```
+
+`outcome` is `published` or `already-present`. `finalTag` is `moved`, `already-current`, or
+`kept-newer` (a newer version already holds `latest`).
+
+### Credentials
+
+- **One credential:** `EKKLESIA_PACKAGES_PUBLISH_TOKEN`, a repository Actions secret, used only by
+  the publish step. Nobody needs a token to read or install.
+- **The publisher** is a dedicated account, member only of a `Zayin` team whose one
+  permission is Packages: Write. Its token has only the `write:package` scope. Gitea's
+  `write:package` also allows deleting packages; the tool never does, and nothing else uses the
+  token.
+- **No token in git or in an `.npmrc`.** The tool writes a temporary npm configuration that refers to
+  the variable (`_authToken=${EKKLESIA_PACKAGES_PUBLISH_TOKEN}`), ignores every user, global, and
+  project npm configuration, sends the token only to the registry itself, and removes the
+  configuration afterwards.
+- **What remains trusted:** Gitea gives repository secrets to workflows run for pull requests from
+  branches of this same repository, so anyone who can push a branch here could read the secret
+  through a changed workflow. Keep write access to this repository to the maintainers.
+
+### Immutability
+
+Gitea refuses to upload a version that exists (409). But it lets anyone with package write
+permission delete a version, deletion leaves nothing behind, and an owner's package cleanup rules
+can delete versions on a schedule. So immutability is Ekklesia's policy, not the registry's
+guarantee:
+
+- **A published version is never deleted,** by anyone, for any reason short of a security incident.
+- **A version number is never reused with other bytes.** A version found on the registry with other
+  bytes is burned: investigate how it got there, and publish the train under a new version.
+- **No package cleanup rule** may be configured for the `Zayin` owner.
+- **The publisher never deletes.** The tool has no delete, unpublish, or overwrite, and its tests
+  check that.
+
+Module lockfiles record each package's integrity, so a replaced package would fail every install of
+it, rather than install silently.
+
+### Moving to another registry
+
+Only configuration changes: the registry URL (the workflow's `EKKLESIA_PACKAGES_REGISTRY`), the
+publisher credential, and modules' `@ekklesia:registry`. Modules then regenerate their lockfiles,
+because Gitea's tarball URLs are its own. Package sources, the train, its manifests, and every
+artifact already built stay as they are; the same bytes keep the same integrity.
+
+### Proving the publication machinery
+
+`pnpm test:package-publication` (`scripts/test-package-publication.sh`, the CI `package-publication`
+job) publishes a real release train to a disposable Gitea 1.27.2 configured like the real one:
+public owners, a publisher team, and an outsider. In CI it publishes the very artifact the
+`package-release` job handed on, after checking its manifest hash. It proves:
+
+- anonymous search, metadata, and download work;
+- publishing without credentials, or by a user outside the publisher team, fails;
+- the round trip is byte-identical, also anonymously;
+- the registry refuses a second upload of a published version;
+- a train interrupted before its sixth package resumes, verifying the five and publishing the rest,
+  with `latest` untouched until all nine are verified;
+- a version already published with other bytes stops the train, deleting and overwriting nothing,
+  and publishing nothing after it, on every retry;
+- a train interrupted while moving `latest` converges on a rerun, moving only the missing tags.
+
+### The first publication
+
+The first train published is **0.2.0**, the next platform release, not 0.1.2. The `v0.1.2` tag
+predates the curated SDK and this release tooling, so packages built now and called 0.1.2 would
+claim to be source that 0.1.2 never contained.
+
+Before it, an administrator of the Gitea instance:
+
+1. creates the dedicated publisher account;
+2. creates a `Zayin` team, for example `package-publishers`, with only the Packages
+   unit at Write, and adds the account to it;
+3. creates a token for the account with only `write:package`, and stores it as the repository
+   Actions secret `EKKLESIA_PACKAGES_PUBLISH_TOKEN`;
+4. checks that the owner has no package cleanup rule.
+
+Then the release proceeds as usual: the version-set pull request merges, a maintainer starts
+Publish packages on `main` with that version, and tags the commit once the train is published.
+

docs/development/security.md

@@ -484,7 +484,13 @@ before it is installed: its digest, its archive safety (no links, special files,
 escaping paths), every file's digest, and its identity and compatibility. The digest proves
 integrity, not who published the package; signing is not implemented. The verifier loads the backend
 in a short-lived process with an empty environment, so module code never sees a database URL or a
-secret while it is being checked.
+secret while it is being checked. That load executes package code: `noexec` is retained on the
+general `/tmp`, but native packages require the verifier's narrow, bounded execution scratch to be
+executable. The one-shot hardened verifier container—not the scratch mount—is the isolation
+boundary, and it is not claimed to be a perfect sandbox. Use the supported invocation in
+[`deploy/README.md`](../../deploy/README.md#installed-modules), which also keeps the root filesystem
+read-only, runs as the image's non-root user, disables networking and privilege escalation, and
+drops Linux capabilities.
 
 Two production defaults are relevant but are **not** by themselves a deployment guarantee:
 

docs/development/testing.md

@@ -509,6 +509,36 @@ an `authenticated` baseline, from platform ownership, or from a user grant. Its
 answer "yes" to every human question, so any accidental fall-through into a human path would flip
 those assertions.
 
+A further suite (`core/tests/module-database-abi.integration.ts`, same harness) proves Core's Module
+Database ABI v1 executor against real PostgreSQL
+([ADR 0050](../architecture/decisions/0050-module-database-abi-v1.md)). Nothing it asserts is mocked,
+because every claim is a property of PostgreSQL or of the protocol:
+- one statement per `query`, enforced by PostgreSQL's extended protocol rather than by parsing, so
+  semicolons inside literals, identifiers, and comments are never mistaken for a second statement;
+- every allowed parameter category bound exactly, and every refused one refused before PostgreSQL
+  sees it;
+- the decoding table for each type the ADR names;
+- PostgreSQL's SQLSTATE preserved while its message, detail, constraint, and values are hidden;
+- commit, rollback, isolation levels, read-only, no retries, and an aborted transaction never being
+  committed;
+- callback-scoped savepoints;
+- a forgotten `await` rolling back instead of committing, while a rejected callback (one half of a
+  failed `Promise.all`) keeps its own error;
+- transaction-control SQL sent through `query` detected only after PostgreSQL has run it: Core
+  cannot undo a module's own `COMMIT`, so the suite pins what it does do: it refuses everything
+  after, never commits, and destroys the connection;
+- duplicate object-mode columns found only after a mutation ran, unless it ran in a transaction;
+- revoked executors reaching nothing.
+
+The suite's database is created with deliberately hostile defaults: a non-UTC time zone, a non-ISO
+date style, `sql_standard` intervals, `escape` bytea output, and reduced float digits. So every
+decoding assertion also proves the executor pins its own session settings. The pool-safety cases use
+a one-connection pool, which proves the next borrower gets a connection with exactly the database's
+defaults after every failure class: no transaction, setting, temporary table, listener, or advisory
+lock carries over. The same is true after a connection the server terminated. Parameter validation,
+decoding from text, option validation, error sanitization, and scope bookkeeping are also unit-tested
+without a database in `core/tests/module-database-abi.test.ts`.
+
 Outbound email is proven against a **real SMTP server** rather than a mock
 (`core/tests/mail-smtp.integration.test.ts`, [ADR 0037](../architecture/decisions/0037-host-provided-outbound-email.md)).
 `smtp-server` — the reference implementation from the same project as the client — runs in-process,
@@ -568,24 +598,74 @@ CI / migration-smoke (pull_request)
 
 Ekklesia Module Package v1 (ADR 0049) is proven at three levels, all in `pnpm verify`:
 
-- `packages/contracts/tests/module-package.test.ts`: the `ekklesia.package.json` schema, target
+- `packages/contracts/tests/module-package.test.ts`: the `ekklesia.package.json` schema, required
-  names, and the generated runtime `package.json`.
+  SPDX expression and `LICENSE` inventory entry, target names, and the generated runtime
+  `package.json`.
 - `core/tests/module-package-verification.test.ts`: the verifier against hand-built archives,
   including what the packager never produces. A valid package verifies and extracts with normalized
   modes. A wrong digest, a corrupted or missing or unlisted file, disagreeing identities, an unknown
-  format, unknown transitional metadata, an incompatible target, Node.js range, SDK, or database
+  format, unknown transitional metadata, an incompatible target, Node.js range, SDK, or legacy
-  runtime, a missing entrypoint, a backend that imports something the package lacks, absolute and
+  database runtime, ABI metadata carrying a forbidden transitional runtime, malformed ABI schema
+  metadata, missing or malformed license metadata, missing, unlisted, duplicated, or corrupted
+  `LICENSE`, a missing entrypoint, a backend that imports something the package lacks, absolute and
   `..` paths, symbolic and hard links, device nodes and FIFOs, setuid and setgid entries, a second
   top-level directory, and a duplicate entry each fail with their own sanitized code. The backend
-  load check runs in a real child process.
+  load check runs in a real child process and selects the schema contract from the manifest.
+- `packages/module-pack/tests/native-target.test.ts`: the `linux-x64-glibc` target, with a real
+  native dependency (`sharp`). The checked-in proof module (`tests/fixtures/native-module`) is
+  packed, and the test proves:
+  - the package carries exactly sharp's discovered runtime closure, as real files;
+  - nothing from another platform, and no development dependency, is included;
+  - `runtime` matches what the binaries declare;
+  - the reviewed libvips supplement is merged and labelled;
+  - two packs from unrelated copies are byte-identical.
+
+  Core's own verifier then accepts the package, and the extracted package runs a real image
+  operation in a separate process with an empty environment. Node's resolution hooks and the
+  process's memory map show that nothing resolves or loads from outside the package except the
+  host's system libraries.
+- `packages/module-pack/tests/native-closure.test.ts` breaks the closure rules one at a time, with
+  fake native packages built around the real sharp addon's bytes:
+  - which platform packages are kept and which are left out;
+  - missing and foreign-platform dependencies;
+  - version conflicts, links, a foreign machine, and Node.js range conflicts;
+  - an unneeded native target.
+- `packages/module-pack/tests/supplements.test.ts` proves ADR 0052's mechanism:
+  - the documented content-digest algorithm;
+  - that the loader refuses anything unreviewed;
+  - that supplement material is merged after the package's own and labelled;
+  - that a supplement for another version, digest, or licence fails closed;
+  - that the shipped libvips supplement is intact and pins the installed package exactly.
 - `packages/module-pack/tests/`: the packager against generated fixture modules (payload contents,
   generated `package.json`, metadata, bundled backend with only built-in imports, refusal of native
-  and platform-specific dependencies and of unknown or textless licences, notices, byte-identical
+  and platform-specific dependencies and of unknown or textless third-party licences, explicit
-  archives, normalized tar and gzip headers), and end to end against the built module template:
+  module SPDX and license-file validation, unchanged `LICENSE` bytes and inventory digest, notices,
+  byte-identical archives, normalized tar and gzip headers), and end to end against the built module template:
   packed twice to identical bytes without changing the workspace's install state, verified by Core's
-  verifier, extracted elsewhere, and loaded with Node's own resolution hooks proving nothing outside
+  verifier with a deliberately different Core Drizzle version, extracted elsewhere, and loaded with
-  the package is resolved. Turbo builds the template and Core first, and runs the template's own
+  Node's own resolution hooks proving nothing outside the package is resolved. The package contains
-  tests (which rebuild its UI in place) before these.
+  the repository's exact AGPL `LICENSE`, authoritative `AGPL-3.0-or-later` metadata, module-side
+  Drizzle but no `transitional.databaseRuntime`, and no tooling-only SPDX parser dependency. Turbo
+  builds the template and Core first, and runs the template's own tests (which rebuild its UI in
+  place) before these.
+
+## The public package train
+
+`pnpm test:package-release` (the CI `package-release` job) builds the public `@ekklesia/*` package
+train, proves a second build from another checkout of the commit byte-identical, and installs
+exactly those tarballs into the standalone fixture module, offline, which must typecheck with
+`skipLibCheck: false`, build, package, and verify. It needs a clean source tree; pass
+`-- --allow-modified` to try uncommitted changes locally. The release rules themselves (set,
+versions, manifest inspection, release directory, manifest bytes, the pack hook) are unit-tested in
+`tests/public-packages.test.ts`, part of `pnpm verify`. See
+[Releases and the public package train](releases.md).
+
+`pnpm test:package-publication` (the CI `package-publication` job, given the `package-release` job's
+artifact) publishes a release train to a disposable Gitea 1.27.2 with Docker, never the real
+registry, and proves the publication tool: byte-identical round trips, anonymous reads, refused
+unauthorized publishing, partial-train recovery, the hard stop on a burned version, and dist-tag
+convergence (`tests/package-publication.integration.ts`). The tool's own rules are unit-tested in
+`tests/package-publication.test.ts`, part of `pnpm verify`.
 
 ## The generic platform image and the reference deployment
 
@@ -604,8 +684,9 @@ These need Docker and build images locally; nothing is pushed or published.
 - `pnpm deploy:smoke` (`scripts/smoke-deploy.sh`) runs the reference deployment end to end on the
   generic image with empty module storage. With `EKKLESIA_SMOKE_TOPOLOGY=split`, the same image also
   runs the installed-module lifecycle:
-  - the module template is packaged by the canonical packager (Module Package v1, ADR 0049),
+  - the module template is packaged by the canonical packager (Module Package v1, ADR 0049 and
-    verified by the image's own verifier, and installed into module storage;
+    ADR 0051), with its explicit AGPL declaration and license bytes, as ABI v1, verified by the
+    image's own verifier, and installed into module storage;
   - its migration is planned and explicitly applied, and the API restarted;
   - a real browser mounts it;
   - it is removed and the API restarted, and Core still runs, migrations still plan and apply, and

docs/module-development/README.md

@@ -66,8 +66,126 @@ module with no migration history omits `entrypoints.migrations` and needs no pla
 }
 ```
 
-The package version must match the manifest and runtime-definition versions. Internal package
+The package version must match the manifest and runtime-definition versions. Inside this
-dependencies use `workspace:` ranges and supported public package entrypoints.
+repository, Ekklesia package dependencies use `workspace:` ranges and supported public package
+entrypoints. A module in its own repository depends on the published packages instead
+([Developing a module in its own repository](#developing-a-module-in-its-own-repository)).
+
+### Developing a module in its own repository
+
+> **Status:** the packages are published by release
+> ([ADR 0053](../architecture/decisions/0053-standalone-module-development-packages.md),
+> [Releases and the public package train](../development/releases.md)). The first published train
+> is 0.2.0, the platform release after 0.1.2.
+
+A module does not need an Ekklesia checkout. Do not clone Ekklesia and put your module in its
+`modules/` directory: your module is its own repository, and it depends on Ekklesia's
+module-development packages like any other npm packages.
+
+The packages are **publicly readable**
+([ADR 0054](../architecture/decisions/0054-public-package-reads-before-launch.md)): installing them
+needs no account, no token, and no access to Ekklesia's Gitea. That is not a public launch, and it
+promises no API stability beyond the pre-1.0 SemVer policy. Only Ekklesia's release workflow can publish them. Point the `@ekklesia` scope at
+the registry in your repository's committed `.npmrc`; that is all the configuration there is:
+
+```ini
+@ekklesia:registry=https://git.zayin.net/api/packages/Zayin/npm/
+```
+
+Then the module builds and packages like any other:
+
+```bash
+pnpm install
+pnpm build
+pnpm exec ekklesia-pack-module --module . --target any --out ../packages \
+  --license-file ./LICENSE --source-revision "$(git rev-parse HEAD)"
+```
+
+Before 1.0, a minor version may change these APIs (the project's SemVer policy). Pin the train you
+build against with ranges in `package.json` and exact versions in your lockfile.
+
+| Package | Where it goes | What it is |
+| --- | --- | --- |
+| `@ekklesia/module-sdk` | `dependencies` | `defineModuleRuntime`, routes, configuration, storage, realtime, principals |
+| `@ekklesia/module-database` | `dependencies` | Module Database ABI v1 types, `sql`, schema metadata; `/drizzle` for Drizzle |
+| `@ekklesia/module-ui-sdk` | `dependencies` | `defineModuleUi` and the host context |
+| `@ekklesia/design-tokens` | `dependencies` | design-token names and helpers |
+| `@ekklesia/ui` | `dependencies` | shared elements; a pre-1.0 API that may still change |
+| `react`, `react-dom`, your ORM if any | `dependencies` | your own copies, bundled into your artifacts |
+| `@ekklesia/module-ui-build` | `devDependencies` | `ekklesia-build-module-ui` |
+| `@ekklesia/module-pack` | `devDependencies`, **exact version** | `ekklesia-pack-module` |
+| `@ekklesia/typescript-config` | `devDependencies` | `node.json`, `browser-react.json`, ... |
+
+`@ekklesia/contracts` is not a direct dependency. The packages above install it; never add or
+import it yourself, because what it exports is the platform's, not a supported author API.
+
+```json
+{
+  "name": "@acme/notes",
+  "version": "0.1.0",
+  "license": "AGPL-3.0-or-later",
+  "private": true,
+  "type": "module",
+  "engines": { "node": ">=24.11.0 <25" },
+  "scripts": {
+    "build": "tsc --project tsconfig.build.json && ekklesia-build-module-ui"
+  },
+  "dependencies": {
+    "@ekklesia/module-database": "^0.2.0",
+    "@ekklesia/module-sdk": "^0.2.0",
+    "@ekklesia/module-ui-sdk": "^0.2.0",
+    "@ekklesia/ui": "^0.2.0",
+    "react": "19.2.8",
+    "react-dom": "19.2.8"
+  },
+  "devDependencies": {
+    "@ekklesia/module-pack": "0.2.0",
+    "@ekklesia/module-ui-build": "^0.2.0",
+    "@ekklesia/typescript-config": "^0.2.0",
+    "typescript": "7.0.2"
+  }
+}
+```
+
+- **One coordinated version.** Every Ekklesia module-development package has the same version,
+  equal to the Ekklesia release it belongs to, and the platform checks your manifest's
+  `compatibility.moduleSdk` against it. Ranges in your `package.json` are fine; your lockfile pins
+  exact artifacts, and you install with a frozen lockfile.
+- **Pin `@ekklesia/module-pack` exactly** in `package.json`, not only in the lockfile: its version
+  decides the package it produces.
+- **`engines.node` is required.** The packager records your module's supported Node.js range from
+  `engines.node` in your `package.json`, and refuses to package without it
+  (`MODULE_PACK_RUNTIME_UNKNOWN`). It never looks for a workspace file.
+- **No Drizzle unless you use it.** The Module SDK does not install Drizzle. A module that uses the
+  Drizzle adapter, `@ekklesia/module-database/drizzle`, adds `drizzle-orm` to its own
+  dependencies; it is an optional peer of that adapter only.
+- **One React.** `@ekklesia/ui` takes React as a peer, so your bundle contains one React, your own.
+  Your UI artifacts still bundle it
+  ([ADR 0023](../architecture/decisions/0023-module-ui-build-pipeline.md)).
+- **esbuild's install script.** The UI build and the packager use esbuild, which runs an install
+  script. With pnpm, allow it in your repository's `pnpm-workspace.yaml`:
+
+  ```yaml
+  allowBuilds:
+    esbuild: true
+  ```
+- **Lockfiles name the registry.** pnpm records Gitea's tarball URLs in your lockfile. If the
+  packages ever move to another registry, change `@ekklesia:registry` and regenerate the lockfile;
+  nothing else changes, and the integrity of every package stays the same.
+- **TypeScript.** Extend the shared configurations by package name, for example
+  `"extends": "@ekklesia/typescript-config/node.json"` for the backend and
+  `@ekklesia/typescript-config/browser-react.json` for the UI.
+
+Packaging and verification work exactly as for a module in this repository
+([Packaging your module](#packaging-your-module)). The packager recognizes Ekklesia's packages by
+their identity, not by where they are installed, so they are recorded under `incorporates` and never
+credited as third-party software, wherever they came from.
+
+Ekklesia proves this on every CI run: `pnpm test:package-release` builds the public packages of a
+release as one train of tarballs, proves two builds identical, and installs exactly those tarballs
+into a module outside the repository (`tests/fixtures/standalone-module`), with no workspace link
+and no registry, then typechecks, builds, packages, and verifies it. Those exact artifacts are what
+the release publishes ([Releases and the public package train](../development/releases.md)).
 
 ### An installed module is self-contained
 
@@ -92,15 +210,17 @@ through no link, `NODE_PATH`, loader hook, or alias. The packager therefore bund
 
 #### Packaging your module
 
-Build your module, then run the packager from the workspace your module is built in. It is a
+Build your module, then run the packager from your module's directory. It is a development
-development dependency like `@ekklesia/module-ui-build`:
+dependency like `@ekklesia/module-ui-build`, and it takes your module's supported Node.js range from
+`engines.node` in its `package.json`:
 
 ```bash
 pnpm exec ekklesia-pack-module --module . --target any --out ../packages \
+  --license-file ./LICENSE \
   --source-revision "$(git rev-parse HEAD)"
 ```
 
-It writes `<id>-<version>-any.tar.gz` and its `.sha256` line, and nothing else anywhere: it never
+It writes `<id>-<version>-<target>.tar.gz` and its `.sha256` line, and nothing else anywhere: it never
 installs, links, or deploys, so your workspace is left exactly as it was. Never run `pnpm deploy` in
 a workspace instead: it rewrites that workspace's install state to production-only.
 
@@ -110,13 +230,15 @@ The archive holds one directory named with your module id:
 <id>/
 ├── package.json            generated: name, version, private, "type": "module", the layer marker
 ├── ekklesia.module.json    your manifest, byte for byte
-├── ekklesia.package.json   package metadata: target, runtime, provenance, file digests
+├── ekklesia.package.json   package metadata: license, target, runtime, provenance, file digests
+├── LICENSE                 your explicitly supplied module license material, byte for byte
 ├── THIRD_PARTY_NOTICES     licence and notice text of every third-party package bundled
 ├── dist/server/index.js    your backend entrypoints, bundled
 ├── dist/schema/index.js
 ├── dist/chunks/            code your backend entrypoints share
 ├── dist/ui/ … dist/display/ … dist/contributions/   your browser artifacts, exactly as built
-└── drizzle/                your migrations
+├── drizzle/                your migrations
+└── node_modules/           a native target only: native runtime dependencies, as real files
 ```
 
 - **Bundled backend.** Your server, schema, and jobs entrypoints are bundled with every
@@ -127,36 +249,182 @@ The archive holds one directory named with your module id:
   your development `package.json`, any `workspace:` range, and links of any kind.
 - **Browser artifacts must be current.** The packager rebuilds them in memory and refuses an artifact
   on disk that differs, so run your build first.
-- **`any` is the only target today.** A dependency that is native or platform-specific (a compiled
+- **Targets.**
-  addon, a package that declares an operating system or CPU, or one that loads a per-platform binary
+  - **`any`** is for pure-JavaScript modules. A dependency that is native or platform-specific (a
-  such as `sharp`) cannot be in an `any` package, and packaging fails. Native targets come later.
+    compiled addon, a package that declares an operating system or CPU, or one that loads a
-- **Licences.** `THIRD_PARTY_NOTICES` credits every third-party package your bundles contain, with
+    per-platform binary such as `sharp`) cannot be in an `any` package, and packaging fails.
-  its declared licence and the licence and notice files it ships. A package that declares no licence
+  - **`linux-x64-glibc`** is for modules with such a dependency, on Linux, x86-64, and glibc. Pack
-  fails packaging, and so does one that ships no licence text, unless its licence's standard text is
+    with `--target linux-x64-glibc` on a matching host, after installing your dependencies.
-  complete without a copyright line (Apache-2.0, which the packager then supplies and says so). The
+- **What a `linux-x64-glibc` package contains.**
-  Ekklesia platform's own packages are listed in `ekklesia.package.json` under `incorporates`.
+  - **Native packages stay outside the bundle.** Your ordinary JavaScript dependencies are bundled
+    as before. Each native package is copied instead, with exactly its production runtime
+    dependencies, as real files flat under `node_modules/<name>`.
+  - **Only this target's platform packages are copied.** Optional platform packages for other
+    systems, development dependencies, declarations, and source maps are left out. Two versions of
+    one package, a link inside a native package, or a required dependency for another platform fail
+    packaging.
+  - **`runtime` is read from the binaries themselves.** It records the Node-API version your addons
+    declare (or the exact Node.js ABI of an ABI-specific addon) and the newest glibc symbol version
+    any copied binary needs. A native target for a module with no native addon is refused: use
+    `any`.
+- **A native package fits one environment.** A `linux-x64-glibc` artifact runs only on Linux,
+  x86-64, glibc hosts that meet its recorded glibc and Node-API minimums. The verifier checks all of
+  that before it loads anything. Other operating systems and CPUs, including ARM, are not supported
+  yet.
+- **Your module's licence.** Your source `package.json` must contain a non-empty string SPDX
+  expression. The packager validates its syntax, rejects `UNLICENSED`, and copies it unchanged to
+  the required `ekklesia.package.json.license`. `--license-file` is also required: it names the
+  regular file whose exact bytes become the root `LICENSE` payload and inventory entry. The
+  packager never searches parent directories, guesses text from the expression, or downloads it.
+- **Third-party licences.** `THIRD_PARTY_NOTICES` separately credits every third-party package your
+  bundles contain, with its declared licence and the licence and notice files it ships. A dependency
+  that declares no licence fails packaging, and so does one that ships no licence text, unless its
+  licence's standard text is complete without a copyright line (Apache-2.0, which the packager then
+  supplies and says so). The module itself is not added to this notice file. Bundled Ekklesia
+  packages remain listed in `ekklesia.package.json` under `incorporates`; one applicable AGPL text
+  is sufficient for current official modules. An Ekklesia package is one named `@ekklesia/*` whose
+  `package.json` also carries `"ekklesia": { "distribution": "module-development" }`, whether it is
+  linked from this repository or installed from a registry; a package with only the name is
+  third-party.
+- **Reviewed licence supplements.** Some dependencies omit material that redistribution requires.
+  For one of those, the packager adds material from a reviewed supplement checked in with it, after
+  the package's own material and labelled as such
+  ([ADR 0052](../architecture/decisions/0052-reviewed-license-supplements.md)).
+  - **Exact match.** A supplement is used only for an exact package name, version, and content
+    digest. The digest covers the redistributed files' relative paths and bytes, and is documented in
+    `packages/module-pack/src/supplements.ts`. Any mismatch fails.
+  - **What it does not do.** A supplement never changes the licence the package declares. The
+    supplements cover `@img/sharp-libvips-linux-x64` 1.3.3 and 1.3.4, the libvips binaries that
+    `sharp` 0.35.4 and 0.35.5 load; each matches only its own version and digest, and the packager's
+    native proof builds with sharp 0.35.5. A supplement identifies and verifies licence and notice
+    material only. Source availability for copyleft native code is a separate requirement, met by a
+    corresponding-source artifact
+    ([Distributing a native package publicly](#distributing-a-native-package-publicly)).
 - **Deterministic.** The same packager version and the same built inputs produce the same archive,
   byte for byte, wherever the checkout is.
 
-**Drizzle, for now.** You define tables with your own copy of Drizzle, and Core runs your queries
+**Database ABI v1 is the current path.** A module that declares `"database": { "abi": 1 }` keeps
-through the platform's Drizzle instance (see [Database access](#database-access)). Objects from two
+Drizzle and its exact version inside its own bundle as an implementation detail. Its package omits
-copies interoperate only when the copies are interchangeable, so the current implementation requires
+`transitional.databaseRuntime`; Core validates the module's plain schema metadata and never compares
-**exactly the Drizzle version the platform uses**: the one `@ekklesia/module-sdk` depends on. The
+the bundled Drizzle version with its own. The canonical template demonstrates this path with
-package records it under `transitional`, and an installation refuses a package whose Drizzle differs.
+`@ekklesia/module-database/drizzle`.
-This is a constraint of today's implementation, not a permanent contract.
+
+A manifest-v8 module that omits `database` remains on the temporary legacy facade. Only that legacy
+package records bundled Drizzle under `transitional.databaseRuntime`, and the verifier continues to
+require exact agreement with Core. The legacy facade has not been removed.
 
 #### Verifying a package
 
 `node core/dist/cli/verify-module-package.js <archive> --sha256-file <archive>.sha256`, run from an
 Ekklesia installation (`/opt/ekklesia` in the image), checks a package against that platform without
 installing it. Pass `--extract-to <new directory>` to receive the verified module directory.
-[deploy/README.md](../../deploy/README.md#installed-modules) shows the whole installation.
+[deploy/README.md](../../deploy/README.md#installed-modules) shows the supported hardened container
+invocation; use it rather than inventing mount flags. Backend verification executes package code.
+Its container is therefore the isolation boundary: general `/tmp` remains `noexec`, while a narrow,
+bounded, ephemeral verifier scratch tmpfs permits execution so native addons can load.
 
 The repository's boundary checks (`pnpm boundaries`) prove only source modules in a workspace. An
 installed package normally has no source, so the platform cannot check it the same way. Your
 module's own CI is where its boundary rules, its production dependencies, and its behaviour inside
 Ekklesia are proven ([ADR 0047](../architecture/decisions/0047-module-ci-harness.md)).
 
+#### Distributing a native package publicly
+
+Building and testing a native package needs nothing beyond the packager. **Distributing it
+publicly** does, when it redistributes native code under the GNU LGPL, the MPL, or a similar licence
+with source obligations
+([ADR 0055](../architecture/decisions/0055-corresponding-source-artifacts.md)).
+
+- **Covered dependencies.** A native dependency is covered when its declared licence, or any
+  component its reviewed supplement records inside it, carries source obligations. libvips is one:
+  it declares `LGPL-3.0-or-later`, and cairo and several Rust crates inside it are under the MPL.
+- **The policy.** A package with covered dependencies may be distributed publicly only together with
+  a corresponding-source artifact. The artifact holds the exact source, patches, build definitions,
+  and rebuild and relink instructions for those dependencies, as bytes rather than links. If the
+  artifact cannot be produced and verified, the package is not approved for public distribution.
+  This is Ekklesia's project compliance policy, not legal advice or certification. A package that
+  passes the gate meets Ekklesia's redistribution policy, and nothing more is claimed.
+- **Source recipes.** For each covered dependency version, a reviewed recipe is checked in beside
+  the supplements, under `packages/module-pack/corresponding-sources/<package>/<version>/`. It holds
+  `recipe.json` and its documents, notably `BUILDING.md`. The recipe names the exact package (name,
+  version, content digest) and the exact supplement it was prepared with. It lists every component
+  with its role (`compiled`, `build-input`, or `build-definition`), licence, licence material, and
+  relationship to the binary. Every source file and patch is recorded by origin, size, and SHA-256,
+  and every exclusion has a reason. Like supplements, recipes are reviewed data, and the mechanism
+  knows no particular library.
+
+Releasing a native package publicly takes three steps after packaging:
+
+```bash
+# 1. Acquisition: the only step that uses the network. It fetches each recorded file once into a
+#    cache keyed by SHA-256, refusing any response that differs from the recipe.
+pnpm exec ekklesia-corresponding-source acquire --package ../packages/<id>-<version>-linux-x64-glibc.tar.gz \
+  --cache ~/.cache/ekklesia/corresponding-sources
+
+# 2. Construction: offline. Every byte is verified against the recipe before anything is written.
+pnpm exec ekklesia-corresponding-source build --package ../packages/<id>-<version>-linux-x64-glibc.tar.gz \
+  --cache ~/.cache/ekklesia/corresponding-sources --out ../packages
+
+# 3. The public-distribution gate. Exit status 0 means approved.
+pnpm exec ekklesia-corresponding-source verify --package ../packages/<id>-<version>-linux-x64-glibc.tar.gz \
+  --source ../packages/<id>-<version>-linux-x64-glibc-corresponding-source.tar.gz \
+  --metadata ../packages/<id>-<version>-linux-x64-glibc.redistribution.json
+```
+
+Construction writes four sibling release artifacts beside the package. The source archive never goes
+inside the Module Package, and `THIRD_PARTY_NOTICES` is unchanged.
+
+```text
+<id>-<version>-linux-x64-glibc.tar.gz                           the Module Package (packager)
+<id>-<version>-linux-x64-glibc.tar.gz.sha256
+<id>-<version>-linux-x64-glibc-corresponding-source.tar.gz      the corresponding source
+<id>-<version>-linux-x64-glibc-corresponding-source.tar.gz.sha256
+<id>-<version>-linux-x64-glibc.redistribution.json              binary ↔ source, by digest
+<id>-<version>-linux-x64-glibc.source-notice.txt                the release notice
+```
+
+- **The source archive** is deterministic: sorted entries, fixed modes, ownership, and timestamps,
+  and no machine-specific path. The same package and recipe produce the same bytes in any directory.
+  - `corresponding-source.json` records every file with its SHA-256, and `SHA256SUMS` repeats them.
+  - Each covered dependency has its own `dependencies/<package>/<version>/` directory, with
+    `BUILDING.md`, the recipe, `PROVENANCE.md`, the supplement, and `sources/` and `patches/`.
+- **The redistribution metadata** answers "which exact source corresponds to this exact binary?"
+  from digests. It records:
+  - the package file and its SHA-256, the module identity, and the target;
+  - each covered dependency's version and content digest, and the supplement and recipe it was
+    assembled from;
+  - the source archive's file name and SHA-256, and the SHA-256 of its manifest.
+- **The release notice** must be shown alongside the binary wherever it is offered. It states that
+  the release includes third-party software under licences including the GNU LGPL and the MPL, and
+  that corresponding source and build and relink materials for the covered native dependencies are
+  in the accompanying artifact. It names that artifact by its exact file name and SHA-256.
+- **Fail-closed.** The gate refuses a package when:
+  - a covered dependency has no recipe, or a recipe or supplement does not match its exact bytes;
+  - the source archive is missing, non-canonical, or differs from its manifest;
+  - the archive holds a file the manifest does not record, or a generated file names a local path;
+  - the metadata or the notice does not name these exact files.
+
+  It also refuses bundled (not copied) copyleft code, which this mechanism does not cover. A package
+  with no covered native code is approved without an artifact.
+- **Retention.** Keep a release's source artifact for as long as its binary release is distributed
+  or supported. Never delete one automatically while the binary remains available. Never replace its
+  bytes under the same name. A correction is a new release, or an explicitly versioned compliance
+  artifact.
+
+**Available today:** a recipe for `@img/sharp-libvips-linux-x64` 1.3.4, used by sharp 0.35.5. Its
+artifact is about 200 MB: 27 library archives, 5 patches, 353 Rust crates, and the Rust standard
+library source of the recorded toolchain. Following its `BUILDING.md` rebuilds
+`libvips-cpp.so.8.18.7` from that source alone. libvips 1.3.3 (sharp 0.35.4) has a supplement but no
+recipe, so a package with it builds and tests as before but is not approved for public distribution.
+`pnpm test:corresponding-source` runs the whole proof for the native proof module: acquisition into a
+verified cache, two byte-identical builds, the gate, and sharp running from the package.
+
+**Adding a native dependency** follows the same path as libvips:
+- curate and review its supplement (ADR 0052);
+- curate and review its source recipe and `BUILDING.md`, recording every source input the
+  dependency's build fetches;
+- prove both with the native packaging tests and `pnpm test:corresponding-source`.
+
 ### License
 
 Ekklesia is licensed under the GNU Affero General Public License, version 3 or (at your option) any
@@ -164,10 +432,13 @@ later version, `AGPL-3.0-or-later` ([LICENSE](../../LICENSE)), and official Ekkl
 same license. Declare it in your module's development `package.json`
 (`"license": "AGPL-3.0-or-later"`), as the module template does.
 
-A Module Package v1 does not yet record a module's own license: its runtime `package.json` and
+A Module Package v1 records that validated expression in its required
-`ekklesia.package.json` have fixed fields, and its contents are fixed, by ADR 0049. Carrying the
+`ekklesia.package.json.license` and contains the exact explicitly supplied bytes at `LICENSE`
-module's license, and the license text for the Ekklesia code bundled into its backend, needs a
+([ADR 0051](../architecture/decisions/0051-module-package-license-material.md)). The generated
-change to that format.
+runtime `package.json` is not authoritative for licensing. `THIRD_PARTY_NOTICES` remains only for
+redistributed third-party dependencies, while bundled Ekklesia components remain represented by
+`incorporates`. This strict-reader addition keeps `packageFormat` at `1`; older pre-0051 artifacts
+without the field and payload fail closed.
 
 ### Removing a module keeps its data
 
@@ -192,13 +463,13 @@ without executing module code:
 
 ```json
 {
-  "manifestVersion": 7,
+  "manifestVersion": 8,
   "id": "calendar",
   "name": "Calendar",
   "version": "0.1.0",
   "compatibility": {
-    "platform": "^0.1.0",
+    "platform": "^0.2.0",
-    "moduleSdk": "^0.1.0"
+    "moduleSdk": "^0.2.0"
   },
   "dependencies": {
     "modules": {
@@ -269,10 +540,10 @@ has its own exact semantic version because its public contract can evolve indepe
 module release. Capability dependencies use semantic-version ranges. Optional means the provider
 may be absent; if it is installed, its capability version must be compatible.
 
-`manifestVersion: 7` (`packages/contracts/src/module-manifest.ts`) is a required, exact literal — a
+`manifestVersion: 8` (`packages/contracts/src/module-manifest.ts`) is a required, exact literal — a
-version 6 manifest, and any other version, fails validation outright rather than being silently
+version 7 manifest, and any other version, fails validation outright rather than being silently
 reinterpreted; there is no compatibility adapter or automatic migration between manifest versions.
-Version 7 adds the optional `contributions` array
+Already-built version 7 packages must be rebuilt. Version 7 added the optional `contributions` array
 ([ADR 0041](../architecture/decisions/0041-module-browser-contributions.md)). A version 6 module that
 contributes nothing changes only the version literal; every browser artifact remains independently
 optional ([ADR 0033](../architecture/decisions/0033-display-kiosk-host-contract.md)).
@@ -1411,27 +1682,27 @@ export const events = moduleTable("events", {
 });
 ```
 
-The production schema entrypoint in `src/schema/index.ts` wraps those same objects with the Module
+The production schema entrypoint in `src/schema/index.ts` turns those same objects into the plain
-SDK ownership marker:
+schema metadata an ABI-v1 module declares:
 
 ```ts
-import { defineModuleSchema } from "@ekklesia/module-sdk";
+import { moduleDrizzleSchemaMetadata } from "@ekklesia/module-database/drizzle";
 import { events } from "./tables.js";
 
 export { events } from "./tables.js";
 
-export default defineModuleSchema({
+export default moduleDrizzleSchemaMetadata("calendar", { events });
-  moduleId: "calendar",
-  tables: { events }
-});
 ```
 
+A module without an ORM declares the same metadata directly with `defineModuleSchemaMetadata` from
+`@ekklesia/module-database`. A legacy-v8 module's schema entrypoint default-exports
+`{ moduleId, tables }` with the Drizzle table objects themselves.
+
 The prefix callback converts the module ID to a snake-case namespace and prefixes every local table
 name. Here the physical PostgreSQL name is `calendar_events`; `care-team` plus `members` becomes
 `care_team_members`. Local names must be lowercase snake case, and the complete physical identifier
-must not exceed 63 characters. The SDK's `createModuleTable` provides the same convenience when a
+must not exceed 63 characters. `createModuleTable` from `@ekklesia/module-database/drizzle` provides
-generator-facing pure declaration file is not needed; Core validates built metadata independently
+the same convenience; Core validates built metadata independently of either helper.
-of either helper.
 
 Schema definitions use PostgreSQL tables in the platform-managed default/public schema. They must
 be side-effect-free: do not connect to a database, read configuration, or perform I/O during import.
@@ -1462,9 +1733,10 @@ export default defineConfig({
 ```
 
 Keep `tables.ts` limited to Drizzle declarations so the stable generator can load it without
-executing the ESM Module SDK wrapper. `src/schema/index.ts` remains the production compiled schema
+executing the ESM module wrapper. For an ABI-v1 module, `src/schema/index.ts` remains the production
-entrypoint and wraps those same exported table objects with `defineModuleSchema`; tables are not
+compiled schema entrypoint and converts those same table objects to plain metadata with
-declared twice.
+`moduleDrizzleSchemaMetadata`; tables are not declared twice. A legacy-v8 module continues to export
+them as `{ moduleId, tables }` while that facade exists.
 
 Run the module's `migration:generate` script with a lowercase snake-case name, review the generated
 SQL and snapshot, and add the matching entry to `drizzle/meta/_ekklesia.json`. Every entry must
@@ -1485,9 +1757,119 @@ destructive behavior. Review those properties explicitly. Core is the only migra
 follows Drizzle's exact `--> statement-breakpoint` delimiter and never naively splits semicolons or
 falls back to non-transactional execution.
 
-## Database access
+## Module Database ABI v1
 
-`context.services.database` — available in `start`, `stop`, and every authorized route handler,
+The stable database boundary is Module Database ABI v1: SQL text, ordered bound values, an explicit
+row mode, low-level PostgreSQL result values, and callback-scoped transactions. ORM objects never
+cross it. A manifest version 8 module opts in with `"database": { "abi": 1 }`; omitting `database`
+selects the temporary legacy facade. “Legacy” here describes that facade, never a version 7
+manifest. Core selects the service from the validated manifest and gives each ABI module its own
+executor, reused by that module's lifecycle hooks and route handlers.
+
+A Drizzle module imports the optional adapter subpath and declares its own exact compatible
+`drizzle-orm` dependency. The adapter's peer range (`>=0.45.2 <0.46.0`) describes adapter API
+compatibility; it is not a Core or platform compatibility range:
+
+```ts
+import { moduleDrizzle } from "@ekklesia/module-database/drizzle";
+import { defineModuleRuntime } from "@ekklesia/module-sdk";
+import * as schema from "./schema/tables.js";
+
+export default defineModuleRuntime({
+  database: { abi: 1 },
+  id: "calendar",
+  version: "0.1.0",
+  async start({ services }) {
+    const db = moduleDrizzle(services.database, { schema });
+    const events = await db.select().from(schema.events);
+  },
+});
+```
+
+The repeated runtime discriminator is what gives lifecycle and route-handler code the exact
+`ModuleDatabaseExecutor` type instead of a legacy-or-ABI union. Core still chooses from the static
+manifest and refuses startup when the runtime discriminator disagrees with it; neither contract can
+silently receive the other service.
+
+Drizzle compiles SQL and parameters before calling the ABI. The adapter always requests positional
+(`rowMode: "array"`) results, gives those rows back to Drizzle in column order, and Drizzle applies
+the module's own column decoders for bigint, numeric, dates/timestamps, JSON, byte arrays, nulls, and
+supported arrays. This also makes joins with duplicate PostgreSQL column names unambiguous. Core
+never imports this adapter and has no dependency on the module's Drizzle version. The adapter surface
+is deliberately limited to `select`, `insert`, `update`, `delete`, and `transaction`; returning,
+joins, and SQL expressions come from those normal Drizzle builders.
+
+`db.transaction(callback)` maps to the ABI transaction callback. The callback receives another
+Drizzle-facing database backed by the scoped ABI executor; a nested `.transaction()` maps to the
+ABI's `savepoint` callback. Callback values and errors propagate, Core remains authoritative for
+commit/rollback and escaped-scope behavior, and the adapter adds no retries or transaction-control
+SQL.
+
+Drizzle wraps execution failures in `DrizzleQueryError`. Recover the stable sanitized ABI error by
+shape instead of using a PostgreSQL error instance, parsing a message, or reading `.cause.code`:
+
+```ts
+import { findEkklesiaDatabaseError } from "@ekklesia/module-database";
+
+try {
+  await db.insert(schema.events).values(event);
+} catch (error) {
+  const databaseError = findEkklesiaDatabaseError(error);
+  if (databaseError?.sqlState === "23505") {
+    // Handle a uniqueness conflict.
+  }
+}
+```
+
+Modules that do not want Drizzle use the package's ORM-neutral tag. Every interpolation is one bound
+value; v1 deliberately provides no dynamic-identifier or trusted-fragment escape hatch:
+
+```ts
+import { sql } from "@ekklesia/module-database";
+
+const statement = sql`
+  SELECT id, title
+  FROM calendar_events
+  WHERE id = ${eventId}
+`;
+
+const result = await executor.query({ ...statement, rowMode: "object" });
+```
+
+The tag does not stringify values. Unsupported values pass through unchanged and the ABI executor
+rejects them; strings containing quotes or SQL syntax always remain parameters.
+
+ABI modules also export plain schema metadata rather than Drizzle objects. Drizzle users can derive
+it on the module side; raw-SQL modules can write the same inert shape directly:
+
+```ts
+import { moduleDrizzleSchemaMetadata } from "@ekklesia/module-database/drizzle";
+import * as tables from "./tables.js";
+
+export default moduleDrizzleSchemaMetadata("calendar", tables);
+```
+
+The result is `{ moduleId, tables: [{ name, foreignKeys: [{ table }] }] }`. Core validates table
+prefixes, duplicates, and same-module foreign-key targets from those strings and never inspects an
+ABI module's ORM objects.
+
+The canonical module template declares ABI v1, uses the module-side Drizzle adapter, and exports
+plain schema metadata derived with `moduleDrizzleSchemaMetadata`. Its Module Package v1 still
+bundles Drizzle, but carries no `transitional.databaseRuntime`: that version belongs to the module,
+not Core.
+
+## Legacy database access
+
+> **New modules use [Module Database ABI v1](#module-database-abi-v1).** Core still serves the
+> legacy facade described here for its deprecation window
+> ([ADR 0050](../architecture/decisions/0050-module-database-abi-v1.md)), so existing legacy modules
+> keep running. But the Module SDK no longer exposes the facade's type
+> ([ADR 0053](../architecture/decisions/0053-standalone-module-development-packages.md)): built
+> against the current SDK, a module that declares no database sees `services.database` as `never`,
+> and the example below no longer typechecks. Migrate to ABI v1 rather than reaching for the type
+> elsewhere.
+
+For a version 8 manifest that omits `database`, `context.services.database` — available in `start`, `stop`, and every authorized route handler,
 never in `register` — is a `ModuleDatabase`: a typed Drizzle query surface over exactly `select`,
 `selectDistinct`, `selectDistinctOn`, `insert`, `update`, `delete`, `execute`, and `transaction`,
 preserving Drizzle's own table-aware argument and result inference. It is the platform's only

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ekklesia",
-  "version": "0.1.2",
+  "version": "0.2.5",
   "license": "AGPL-3.0-or-later",
   "private": true,
   "type": "module",
@@ -38,9 +38,13 @@
     "modules:pack": "turbo run build && node packages/module-pack/bin/ekklesia-pack-module.mjs",
     "modules:validate": "turbo run build && node core/dist/cli/validate-modules.js",
     "modules:verify-package": "turbo run build && node core/dist/cli/verify-module-package.js",
+    "packages:release": "node scripts/package-release.ts --out .package-release",
     "test": "turbo run test test:root",
     "test:migrations:integration": "pnpm build && bash scripts/test-migrations-integration.sh",
     "test:root": "vitest run --config vitest.config.ts",
+    "test:package-release": "bash scripts/test-package-release.sh",
+    "test:corresponding-source": "bash scripts/test-corresponding-source.sh",
+    "test:package-publication": "bash scripts/test-package-publication.sh",
     "test:watch": "vitest",
     "typecheck": "turbo run typecheck typecheck:root",
     "typecheck:root": "tsc --noEmit --project tsconfig.json",

packages/contracts/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ekklesia/contracts",
-  "version": "0.1.2",
+  "version": "0.2.5",
   "license": "AGPL-3.0-or-later",
   "type": "module",
   "files": [
@@ -10,28 +10,33 @@
     ".": {
       "types": "./dist/index.d.ts",
       "import": "./dist/index.js"
+    },
+    "./module-package": {
+      "types": "./dist/module-package.d.ts",
+      "import": "./dist/module-package.js"
     }
   },
   "scripts": {
     "build": "tsc --project tsconfig.build.json",
     "lint": "biome lint .",
-    "prepack": "pnpm --workspace-root exec turbo run build --filter=@ekklesia/contracts",
     "test": "vitest run",
     "typecheck": "tsc --noEmit --project tsconfig.json"
   },
   "dependencies": {
-    "drizzle-orm": "0.45.2",
     "semver": "7.8.5",
+    "spdx-expression-parse": "5.0.0",
     "zod": "4.4.3"
   },
   "devDependencies": {
     "@biomejs/biome": "2.5.3",
     "@types/node": "24.13.3",
     "@types/semver": "7.7.1",
+    "@types/spdx-expression-parse": "4.0.0",
     "typescript": "7.0.2",
     "vitest": "4.1.10"
   },
   "ekklesia": {
-    "layer": "contracts"
+    "layer": "contracts",
+    "distribution": "module-development"
   }
 }

packages/contracts/src/index.ts

@@ -4,13 +4,14 @@ export * from "./identity.js";
 export * from "./module-configuration.js";
 export * from "./module-contribution.js";
 export * from "./module-database.js";
+export * from "./module-database-abi.js";
 export * from "./module-http.js";
 export * from "./module-lifecycle.js";
 export * from "./module-manifest.js";
 export * from "./module-migration.js";
-export * from "./module-package.js";
 export * from "./module-realtime.js";
 export * from "./module-runtime.js";
-export * from "./module-schema.js";
+export * from "./module-schema-metadata.js";
+export * from "./module-schema-names.js";
 export * from "./module-storage.js";
 export * from "./versions.js";

packages/contracts/src/module-database-abi.ts

@@ -0,0 +1,231 @@
+/**
+ * Module Database ABI v1 (ADR 0050): the stable boundary between Core and a module's database code.
+ *
+ * Only PostgreSQL concepts cross it: SQL text, ordered bound parameter values, decoded result rows
+ * with their column metadata, and transaction scopes that Core controls. **Nothing in this file
+ * names an ORM, a query builder, or a driver.** A module may build its SQL with Drizzle, Kysely, raw
+ * text, or anything else, and Core never learns which; Core may change its own ORM without any
+ * module noticing.
+ *
+ * This is a correctness and compatibility boundary, **not a security sandbox**. Installed modules
+ * remain trusted backend code that runs in the API process with its database role (ADR 0048), and
+ * nothing here, including table prefixes, `SET ROLE`, or PostgreSQL roles, can stop a module from
+ * reaching data that is not its own.
+ */
+
+/** The ABI version these types describe. A module declares it; every executor reports it. */
+export const MODULE_DATABASE_ABI_VERSION = 1;
+export type ModuleDatabaseAbiVersion = typeof MODULE_DATABASE_ABI_VERSION;
+
+/**
+ * A scalar parameter value. Deliberately small: each has exactly one PostgreSQL text encoding.
+ *
+ * - `number` is sent as its JavaScript decimal text; `NaN`, `Infinity`, and `-Infinity` as
+ *   PostgreSQL's own spellings.
+ * - `bigint` is sent as its decimal text.
+ * - `Uint8Array` is sent as `bytea`.
+ *
+ * A JavaScript `Date` is **not** a parameter: whether it means a `timestamp` or a `timestamptz`, and
+ * in which zone, depends on a column the ABI cannot see. Plain objects are not implicit JSON; encode
+ * JSON explicitly as a string. Identifiers are never parameters.
+ */
+export type ModuleDatabaseScalar = null | boolean | number | bigint | string | Uint8Array;
+
+/** A parameter value: a scalar, or a PostgreSQL array of scalars, nested for more dimensions. */
+export type ModuleDatabaseParameter = ModuleDatabaseScalar | readonly ModuleDatabaseParameter[];
+
+/**
+ * A decoded result value. Values that a generic conversion could change arrive as PostgreSQL's
+ * exact text: `int8`, `numeric`, every date and time type, `json`, and `jsonb`. `bytea` arrives as a
+ * `Uint8Array`, and arrays of the built-in types decode element by element.
+ */
+export type ModuleDatabaseValue =
+  | null
+  | boolean
+  | number
+  | string
+  | Uint8Array
+  | readonly ModuleDatabaseValue[];
+
+/** `"object"` rows are keyed by column name; `"array"` rows are positional, in `fields` order. */
+export type ModuleDatabaseRowMode = "object" | "array";
+
+export type ModuleDatabaseObjectRow = Readonly<Record<string, ModuleDatabaseValue>>;
+export type ModuleDatabaseArrayRow = readonly ModuleDatabaseValue[];
+
+/** One query: exactly one PostgreSQL statement with `$1 … $n` placeholders. */
+export interface ModuleDatabaseQuery {
+  readonly text: string;
+  readonly values?: readonly ModuleDatabaseParameter[];
+  /** Defaults to `"object"`. */
+  readonly rowMode?: ModuleDatabaseRowMode;
+}
+
+/** The ordered column metadata of a result, present even when it has no rows. */
+export interface ModuleDatabaseField {
+  readonly name: string;
+  /** The column's PostgreSQL type OID. */
+  readonly typeOid: number;
+}
+
+export interface ModuleDatabaseQueryResult<Row> {
+  /** PostgreSQL's command tag word, such as `SELECT`, `INSERT`, `UPDATE`, or `DELETE`. */
+  readonly command: string;
+  /** The number of rows PostgreSQL reports as processed, or `null` when it reports none. */
+  readonly rowCount: number | null;
+  readonly rows: readonly Row[];
+  readonly fields: readonly ModuleDatabaseField[];
+}
+
+/** What every executor can do: run one statement. */
+export interface ModuleDatabaseQueryable {
+  readonly abiVersion: ModuleDatabaseAbiVersion;
+  query(
+    query: ModuleDatabaseQuery & { readonly rowMode: "array" },
+  ): Promise<ModuleDatabaseQueryResult<ModuleDatabaseArrayRow>>;
+  query(
+    query: ModuleDatabaseQuery & { readonly rowMode?: "object" },
+  ): Promise<ModuleDatabaseQueryResult<ModuleDatabaseObjectRow>>;
+  query(
+    query: ModuleDatabaseQuery,
+  ): Promise<ModuleDatabaseQueryResult<ModuleDatabaseObjectRow | ModuleDatabaseArrayRow>>;
+}
+
+export type ModuleDatabaseIsolationLevel = "read committed" | "repeatable read" | "serializable";
+
+/** Transaction options. Any other key or value is refused, never ignored. Omitted, a transaction is
+ * `read committed` and read-write. */
+export interface ModuleDatabaseTransactionOptions {
+  readonly isolation?: ModuleDatabaseIsolationLevel;
+  readonly readOnly?: boolean;
+}
+
+/**
+ * The executor inside a transaction or a savepoint. It is valid only while its callback runs: once
+ * that callback settles it is revoked, and every later call fails without reaching PostgreSQL.
+ *
+ * Only the innermost open scope may run statements: while a savepoint is open, its parent refuses
+ * statements and new savepoints. A callback must await every operation it starts before it returns.
+ * One that resolves with work outstanding forgot an `await`: it fails with
+ * `MODULE_DATABASE_SCOPE_WORK_OUTSTANDING` and is rolled back. One that rejects keeps its own error.
+ * Either way, outstanding work never leads to a commit or a release.
+ *
+ * Transaction-control SQL (`BEGIN`, `COMMIT`, `ROLLBACK`, `SAVEPOINT`, `RELEASE SAVEPOINT`, …) is
+ * forbidden through `query`; the callbacks control the transaction.
+ */
+export interface ModuleDatabaseTransaction extends ModuleDatabaseQueryable {
+  /** Core names the savepoint. A resolved callback with no work outstanding releases it; a rejected
+   * one rolls back to it and keeps its own error. */
+  savepoint<T>(callback: (savepoint: ModuleDatabaseTransaction) => Promise<T> | T): Promise<T>;
+}
+
+/**
+ * A module's database service under ABI v1. Top-level `query` calls are separate autocommit
+ * statements on whichever pooled connection is free: no session state carries from one to the
+ * next, and none survives the operation that made it.
+ */
+export interface ModuleDatabaseExecutor extends ModuleDatabaseQueryable {
+  /** Core begins the transaction, commits when `callback` resolves with no work outstanding, and
+   * rolls back otherwise; a rejected callback's own error is the transaction's error. Core never
+   * retries it. These guarantees apply to conforming use: no transaction-control SQL through
+   * `query`. */
+  transaction<T>(
+    callback: (transaction: ModuleDatabaseTransaction) => Promise<T> | T,
+    options?: ModuleDatabaseTransactionOptions,
+  ): Promise<T>;
+}
+
+/**
+ * Every failure category an ABI v1 executor reports. A code is a stable category for programmatic
+ * handling and keeps its meaning once published; the specific reason is in the static message.
+ * PostgreSQL's own condition, when there is one, is `sqlState`, a separate field.
+ */
+export const MODULE_DATABASE_ERROR_CODES = [
+  /** The call is not valid ABI use: a malformed query request or callback, a statement text that
+   * holds no statement, an object-mode result with duplicate column names, or a transaction-control
+   * statement sent through `query`. A programming error.
+   *
+   * The last two are only detectable once PostgreSQL has run the statement, so its effects may
+   * already have happened: a mutation with duplicate result columns has been applied (inside a
+   * transaction, it rolls back with it), and transaction control has taken effect, which Core cannot
+   * undo. */
+  "MODULE_DATABASE_REQUEST_INVALID",
+  /** A parameter value is outside the ABI's parameter set. Refused before anything reaches
+   * PostgreSQL. */
+  "MODULE_DATABASE_PARAMETER_INVALID",
+  /** The statement did not complete. `sqlState` is present when PostgreSQL reported the condition;
+   * absent when the database could not be reached or the connection failed. */
+  "MODULE_DATABASE_QUERY_FAILED",
+  /** A transaction option or value is not one the ABI defines. Refused before the transaction
+   * starts. */
+  "MODULE_DATABASE_TRANSACTION_OPTION_INVALID",
+  /** The transaction could not be begun or completed, or a savepoint could not be completed.
+   * `sqlState` is present when PostgreSQL reported the condition. A transaction left aborted by a
+   * failed statement ends here too: PostgreSQL rolls it back, and nothing is committed. */
+  "MODULE_DATABASE_TRANSACTION_FAILED",
+  /** The executor's scope has finished, so it is revoked. */
+  "MODULE_DATABASE_SCOPE_CLOSED",
+  /** The executor's scope is open but not active, because a savepoint inside it is open. */
+  "MODULE_DATABASE_SCOPE_INACTIVE",
+  /** A transaction or savepoint callback resolved while work it started was still outstanding: a
+   * forgotten `await`. The scope was rolled back, never committed or released. (A callback that
+   * rejects keeps its own error instead.) */
+  "MODULE_DATABASE_SCOPE_WORK_OUTSTANDING",
+] as const;
+
+export type ModuleDatabaseErrorCode = (typeof MODULE_DATABASE_ERROR_CODES)[number];
+
+const databaseErrorMessages: Readonly<Record<ModuleDatabaseErrorCode, string>> = Object.freeze({
+  MODULE_DATABASE_PARAMETER_INVALID: "A database parameter value is not supported.",
+  MODULE_DATABASE_QUERY_FAILED: "The database statement did not complete.",
+  MODULE_DATABASE_REQUEST_INVALID: "The database request is not valid.",
+  MODULE_DATABASE_SCOPE_CLOSED: "The database scope has finished and can no longer be used.",
+  MODULE_DATABASE_SCOPE_INACTIVE: "The database scope cannot be used while a savepoint is open.",
+  MODULE_DATABASE_SCOPE_WORK_OUTSTANDING:
+    "The database scope finished with work still outstanding, so it was rolled back.",
+  MODULE_DATABASE_TRANSACTION_FAILED: "The database transaction could not be completed.",
+  MODULE_DATABASE_TRANSACTION_OPTION_INVALID: "A database transaction option is not supported.",
+});
+
+const sqlStatePattern = /^[0-9A-Z]{5}$/u;
+
+/**
+ * The one error an ABI v1 executor reports, sanitized by construction: a stable `code`, PostgreSQL's
+ * `sqlState` when the database supplied one, and a static message. It never carries SQL text,
+ * parameter values, the driver's message, detail, hint, or object names, a cause, a stack beyond
+ * its own name and message, or any driver or ORM object.
+ *
+ * Recognize it with `isModuleDatabaseError`, never `instanceof`: a module bundles its own copy of
+ * this package (ADR 0049), so class identity across the boundary is not a contract.
+ */
+export class ModuleDatabaseError extends Error {
+  readonly code: ModuleDatabaseErrorCode;
+  /** Declared, not initialized, so the property exists only when PostgreSQL supplied a SQLSTATE. */
+  declare readonly sqlState?: string;
+
+  constructor(code: ModuleDatabaseErrorCode, options: { readonly sqlState?: string } = {}) {
+    super(databaseErrorMessages[code]);
+    this.name = "ModuleDatabaseError";
+    this.code = code;
+    if (options.sqlState !== undefined && sqlStatePattern.test(options.sqlState)) {
+      this.sqlState = options.sqlState;
+    }
+    this.stack = `${this.name}: ${this.message}`;
+    Object.freeze(this);
+  }
+}
+
+/** Whether `value` is a Module Database ABI error, judged by its shape rather than its class. */
+export function isModuleDatabaseError(
+  value: unknown,
+): value is Pick<ModuleDatabaseError, "code" | "message" | "name" | "sqlState"> {
+  if (!(value instanceof Error) || value.name !== "ModuleDatabaseError") {
+    return false;
+  }
+  const { code, sqlState } = value as { code?: unknown; sqlState?: unknown };
+  return (
+    typeof code === "string" &&
+    (MODULE_DATABASE_ERROR_CODES as readonly string[]).includes(code) &&
+    (sqlState === undefined || (typeof sqlState === "string" && sqlStatePattern.test(sqlState)))
+  );
+}