Enable the HAOS integration to optionally connect to the standalone
Immich Watcher server for config sync and event reporting.
Server-side:
- New /api/sync/* endpoints: GET trackers, POST template render,
POST event report
- API key auth via X-API-Key header (accepts JWT access tokens)
Integration-side:
- New sync.py: ServerSyncClient with graceful error handling
(all methods return defaults on connection failure)
- Options flow: optional server_url and server_api_key fields
with connection validation
- Coordinator: fire-and-forget event reporting to server when
album changes are detected
- Translations: en.json and ru.json updated with new fields
The connection is fully additive -- the integration works identically
without a server URL configured. Server failures never break HA.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
