ekklesiaandClaude Opus 5.5
607f375809
The Cache Storage media cache minted a new object URL on every lookup and never revoked any. Every state refresh looks up every cached slide, so a running display pinned one more blob per slide per refresh until the browser refused its requests with net::ERR_INSUFFICIENT_RESOURCES. It then showed its offline banner on a working network. Two tabs leaked twice as fast, and real photographs fill blob storage far sooner than test slides. Each cache entry now has exactly one object URL: - every lookup reuses it; - pruning or replacing the entry revokes it; - release(), new on SignageMediaCache, revokes all of them, and the controller calls it on stop once the stage is gone. Two lookups of one slide racing each other keep the first URL and make no second one. The in-memory cache has nothing to give back. Co-Authored-By: Claude Opus 5.5 <[email protected]>
Signage
Ekklesia's visual programming, timeline, synchronization, and display-delivery module.
Signage decides what is on a screen, when, and on which screens together. It natively supports static images; every other kind of content reaches a screen because another Ekklesia module registered a content provider and contributed a live React renderer for it. Signage never learns what an announcement, a Bible passage, or a trivia question is.
This repository is a standalone, independently versioned Ekklesia module package. It is not a fork of Ekklesia and vendors none of its SDKs.
- Module id:
signage - Package:
@ekklesia/signage - Manifest version: 7
Status
Version 0.1.1 is feature-complete for its declared scope and unreleased. What exists today:
- The module package, manifest (v7), four capabilities, six permissions, ten operator settings, and one logical storage bucket.
- Eleven tables and a single initial migration, declared non-destructive.
- Native image ingest: one image per streamed request, 25 MiB, content-addressed, with display and thumbnail renditions and temporary object keys removed after any unsuccessful upload.
- The content provider contract and registry, a bounded and sanitized call path, and Signage's own built-in image provider registered through that same capability.
- Timelines, provider source slots, pinned slots, channel groups, synchronized audience channels, authoritative playback with absolute instants, activation and scheduling, and viewer registration, assignment, heartbeat, and health.
- A management-UI artifact and a full-viewport display artifact, both built through the canonical Ekklesia module UI pipeline and mounted through the platform's browser ABI.
- Two permanent scene layers with a crossfade that never fades the outgoing slide, provider renderers mounted as browser contributions, the built-in "Content unavailable" slate, deliberate blackout, and offline continuation from this display's own persisted state.
Nothing here is deployed, and no cutover from the legacy Announcements container has happened or is planned by this repository. Video, audio, MQTT, Home Assistant, Companion, and a notification outbox are out of scope; so is any content module — Signage ships with no announcements, scripture, or trivia, and cannot render any until one is installed.
Offline cold start is not yet possible
A display that is already mounted keeps playing with no network: its schedule, playback state, provider payloads, and media are Signage's own, persisted by this module in IndexedDB and Cache Storage. Core's service worker caches module code, not Signage domain data.
A display that is restarted while Ekklesia is completely unreachable cannot mount Signage at all. Mounting requires an authenticated module descriptor, and Core does not yet cache one. True offline cold start depends on a Core-provided authorized offline display descriptor or lease; until that exists, this module does not claim it. See ADR 0006.
Developing against Ekklesia
Signage is developed inside the authoritative Ekklesia workspace, checked out at the path it will eventually be installed at:
git clone <ekklesia> ekklesia
git clone <this repository> ekklesia/modules/signage
cd ekklesia
pnpm install
modules/* is an Ekklesia workspace glob, so the checkout is picked up with no registry edit,
no second copy of Ekklesia, and no vendored SDK. @ekklesia/module-sdk, @ekklesia/module-ui-sdk,
@ekklesia/design-tokens, @ekklesia/ui, and @ekklesia/module-ui-build all resolve through the
workspace as workspace:* dependencies.
Two consequences worth knowing:
- Ekklesia uses a shared workspace lockfile, so installing here writes an importer entry for
modules/signageinto Ekklesia'spnpm-lock.yaml. That entry belongs to whoever maintains the Ekklesia checkout; it is not committed from this repository. - Signage requires the Ekklesia platform prerequisites for shared design tokens, module stylesheets, browser contributions, bounded streaming request bodies, and display offline code (ADRs 0039–0043). An Ekklesia checkout without them cannot build or validate this module.
Commands
Run from the Ekklesia repository root:
pnpm --filter @ekklesia/signage build # tsc + the canonical module UI build
pnpm --filter @ekklesia/signage test # unit and browser-artifact tests
pnpm --filter @ekklesia/signage typecheck # node, browser, and browser-test projects
pnpm --filter @ekklesia/signage lint
pnpm boundaries # four-layer boundary enforcement
pnpm modules:validate # static manifest, entrypoint, and schema validation
pnpm migrations:validate # migration journal, policy, ordering, and checksums
pnpm verify # the full Docker-free gate
Signage's tests are its own: pnpm test here runs vitest against this package's vitest.config.ts,
which includes .test.tsx as well as .test.ts. The workspace-root config includes only .test.ts,
so a browser test added here without that config would be silently skipped.
Never run pnpm migrations:apply against a persistent database while developing this module. Signage
reads no environment variable, constructs no database client, configures no object storage, hardcodes
no Ekklesia URL, opens no socket of its own, and applies no migration: every one of those reaches it
through the host.
Changing the schema
pnpm --filter @ekklesia/signage migration:generate # drizzle-kit, into drizzle/
tests/schema.test.ts pins the checksum of the generated SQL, so a regenerated migration fails the
suite until the pin is updated deliberately. drizzle/meta/_ekklesia.json declares the migration
non-destructive; pnpm migrations:validate enforces that.
Verifying what only a browser can show
Automated DOM assertions cannot prove a crossfade, a letterboxed image, or a slate. Those are verified by driving the built artifacts in a real Chromium against a stub host and reading the frames: native fill, both letterboxed fits, a contributed renderer, a frozen mid-crossfade composite, the slate, a blackout, the offline indicator, every management tab, and the narrow-screen gate. The harness is deliberately not committed — it stubs a host and would rot into a second, wrong description of the platform ABI.
What Signage owns, and what providers own
| Signage owns | A content provider owns |
|---|---|
| Native image assets and their renditions | Its own domain content and tables |
| Saved timelines, repeating patterns, and slots | Which of its content is available now |
| Channel groups and synchronized audience channels | Selecting the next item from one of its sources |
| Slot timing and authoritative playback | Repeat and no-repeat policy |
| Timeline activation and scheduling | Audience-specific variants and fallback |
| Viewer registration, assignment, heartbeat, health | Its own live React presentation |
| Transitions, offline continuation, playback controls | Dynamic change within one slide |
| The management and display UI | Its own internal multi-stage behaviour |
Licence and scope
Deployment, the module store, a theme editor, a mobile management UI, video and audio, MQTT, Home Assistant, Companion, and any migration of legacy Announcements data are explicitly out of scope for this repository.