ekklesiaandClaude Opus 5
8d651c427d
ADR 0021 established that a module may own UI and added a statically
validated, never-executed `entrypoints.ui` path, but deliberately left
five questions open: what the artifact exports, what a host provides,
how one artifact runs under both Ekklesia and a standalone host, what
the browser-side trust model is, and how module UI avoids being welded
to a Dashboard that does not exist. This answers them.
React and TypeScript are the supported module UI authoring model. The
repository already leaned this way: `packages/typescript-config` ships a
`browser.json` preset and a `react-native.json` preset with
`"jsx": "react-jsx"`, and ADR 0002 names browser and React Native
configurations. One framework is supported; every other stays rejected.
React is deliberately not part of the contract. A module's compiled
artifact default-exports `defineModuleUi({ id, version, mount })`, and
`mount(container, context)` takes a DOM element and returns an unmount
function. `id` and `version` are build-artifact identity markers a host
verifies against the manifest, mirroring `defineModuleRuntime` exactly.
A host needs an element and a context, never a matching rendering
library, so a module's framework, a host's framework, and the platform
boundary between them stay independent.
The contract lives in a new `@ekklesia/module-ui-sdk` rather than in
`@ekklesia/module-sdk`, for a concrete reason: that package re-exports
all of `@ekklesia/contracts`, so routing module UI through it would drag
Zod, Drizzle, and semver into every browser bundle. The new package has
no runtime dependencies, and its one dependency on contracts is
type-only — the emitted `host-context.js` is `export {};`, and a test
pins that so it cannot regress.
The host context is four members: `moduleId`, `api`, `principal`, and
`permissions`. Navigation, theme, module configuration, organization
context, and diagnostics are deliberately absent; each needs a design
that does not exist. Module UI reaches its backend through
`api.request(path)` with a path relative to its own API root and never
constructs `/api/v1/modules/<id>/...`, which is Ekklesia's private
deployment detail — a module that builds that URL is silently unhostable
anywhere else. One fixture artifact is mounted under two hosts with
different origins and URL shapes to prove it.
Client-side permission hints are presentation only, and both the docs
and a test say so plainly: a denied hint does not stop the module from
calling its API, because server-side `requirePermission` is the only
authority. Module UI is trusted code in the host's own browser realm —
no iframe, no sandbox — which matches the backend model rather than
overstating it, since a module's server half already holds the API's
database authority.
The boundary guard is narrowed precisely, not removed: `.tsx`, `react`,
and `react-dom` are un-denied and modules may depend on the new
`module-ui-sdk` role. `.jsx`, `.css`, every other framework,
`react-router-dom`, `react-native`, and `@vitejs/plugin-react` stay
denied, layer rules are untouched, and an unsupported framework aliased
behind an allowed name (`"react": "npm:vue@3"`) is resolved and rejected
by its real target. Fixtures prove each case, including that module UI
source still cannot import Core.
Core, apps/api, and the manifest contract are untouched. Discovery still
validates the `entrypoints.ui` path and never evaluates it; hosts
perform their own dynamic import and validate the result with
`parseModuleUiExport`. No Dashboard shell, UI runtime, navigation,
grouping, standalone host, build or styling pipeline, installer,
hot-loading, or feature module is added.
Co-Authored-By: Claude Opus 5 <[email protected]>
34 lines
3.0 KiB
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34 lines
3.0 KiB
Markdown
# Architecture decision records
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ADRs capture durable choices that affect more than one package or phase.
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- Filenames use a four-digit sequence followed by a short kebab-case title.
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- Status is `Proposed`, `Accepted`, `Superseded`, or `Rejected`.
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- Accepted ADRs are immutable except for status and cross-reference corrections.
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- A changed decision receives a new ADR that links to and supersedes the old one.
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## Index
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- [0001: Four-layer platform boundary](0001-four-layer-platform-boundary.md) — Accepted
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- [0002: pnpm workspace and strict TypeScript](0002-pnpm-workspace-and-typescript.md) — Accepted
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- [0003: Development infrastructure](0003-development-infrastructure.md) — Accepted
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- [0004: Replace unmaintained MinIO baseline](0004-replace-unmaintained-minio.md) — Accepted
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- [0005: Static module manifests and atomic discovery](0005-static-module-manifests.md) — Superseded
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- [0006: Versioned capabilities and compiled module runtime](0006-versioned-capabilities-and-compiled-module-runtime.md) — Accepted
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- [0007: Module-owned Drizzle schemas and table isolation](0007-module-owned-drizzle-schemas.md) — Accepted
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- [0008: Module-owned migration contracts and offline validation](0008-module-owned-migration-contracts.md) — Accepted
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- [0009: Transactional module migration execution](0009-transactional-module-migrations.md) — Accepted
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- [0010: Core identity architecture and Better Auth adoption](0010-core-identity-and-better-auth-adoption.md) — Accepted
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- [0011: Identity HTTP transport and public enrollment policy](0011-identity-http-transport-and-public-enrollment.md) — Accepted
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- [0012: Production-equivalent identity origin/CSRF protection under test](0012-identity-origin-csrf-protection-under-test.md) — Accepted
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- [0013: Core authorization, permission registry, and platform-owner bootstrap](0013-core-authorization-and-owner-bootstrap.md) — Accepted
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- [0014: Module permission declarations and platform permission registry](0014-module-permission-declarations-and-platform-registry.md) — Accepted
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- [0015: Static module HTTP routing and production runtime lifecycle](0015-static-module-http-routing-and-runtime-lifecycle.md) — Accepted
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- [0016: Module database access](0016-module-database-access.md) — Accepted
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- [0017: Public request perimeter hardening — client address, signup gating, body limits, timeouts](0017-public-request-perimeter-hardening.md) — Accepted
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- [0018: Identity session resolution, canonical public origins, and PostgreSQL transport policy](0018-identity-session-resolution-and-database-transport.md) — Accepted
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- [0019: Durable authorization history and grant management](0019-durable-authorization-history-and-grant-management.md) — Accepted
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- [0020: Module runtime and migration execution hardening](0020-module-runtime-and-migration-execution-hardening.md) — Accepted
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- [0021: Modules as independently hostable products](0021-modules-as-hostable-products.md) — Accepted
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- [0022: Module UI authoring model and host contract](0022-module-ui-authoring-and-host-contract.md) — Accepted
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