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Jasper Van 6521d1b722 feat(events): unify SSE stream, replace frontend polling (#432)
* feat(events): unify SSE stream, replace frontend polling

Add a single /api/events SSE endpoint that multiplexes domains via named
events. Jobs and notifications are always-on; download tasks are an opt-in
per-connection subscription carried in the EventSource URL, so the server only
polls what an open page needs and a browser tab holds one connection.

- Replace refetchInterval polling: sidebar active-job badge, tasks list,
  notification unread count
- Fold the download-tasks SSE into the unified endpoint; remove the now-dead
  /api/download-tasks/events route, downloadTaskEventsUrl, downloadTasksUrlApi
- Client subscription registry: useServerEvents (single connection, reconnects
  when the merged subscription query changes) + useServerEventSubscription
- Decouple the keep-alive heartbeat (25s idle) from the 2s data poll

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(downloader): regenerate OpenAPI spec/client after dropping /events

Removing /api/download-tasks/events from the unified-SSE refactor drifted the
generated downloader OpenAPI doc and Go client (caught by openapi:downloader:check
in CI). Regenerate both. With the events operation gone, the single-value
assignedTo enum constant collapses from GetApiDownloadTasksParamsAssignedToMe to
Me, so update the hand-written client reference to match.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* test(events): cover unified SSE store and endpoint

Codecov flagged the new SSE code as uncovered.

- Unit-test the pure server-events-store (merge/sort query key, listener
  notifications, subscription lifecycle)
- Integration-test GET /api/events: 401 unauthenticated, and that an authed
  user with a queued job receives jobs + notifications events
- Exclude useServerEvents.ts (EventSource/React-effect glue, not unit-testable
  without a DOM) from coverage, matching the existing src/routes & src/components
  exclusions; its logic lives in the now-covered store

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(e2e): stop waiting on networkidle now that SSE is always connected

The unified /api/events stream is mounted on every authenticated page, so the
network never goes idle and waitForLoadState('networkidle') hangs until the job
times out. Drop the four networkidle waits (sign-in helper + image-host reloads);
subsequent navigations and element auto-waits already gate readiness.

Also broaden the /api/events test to cover the abort and error branches.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-06-13 00:14:24 -04:00

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coverage:
# React components and route files cannot be unit-tested without a DOM
# environment. Pure logic extracted from these files is tested separately
# in co-located *.test.ts files. Exclude from coverage tracking to avoid
# false negatives on patch/project checks.
ignore:
- "src/routes/**"
- "src/components/**"
# EventSource + React-effect glue; not unit-testable without a DOM. Its pure
# logic lives in server-events-store.ts, which is covered.
- "src/hooks/useServerEvents.ts"
status:
patch:
default:
# Exclude React UI files from patch coverage requirement.
# Only backend and shared library code is measurable via unit tests.
paths:
- "!src/routes/**"
- "!src/components/**"
- "!src/hooks/useServerEvents.ts"