The lifespan constructor parameter was added in FastAPI 0.93. When
running outside Docker with an older system-packaged FastAPI, the
parameter is silently ignored — the app starts and serves routes but
init_db() and start_presence() never run, so the bot never goes online
and webhooks crash with "Database not initialised".
on_event("startup")/on_event("shutdown") work across all FastAPI
versions.
https://claude.ai/code/session_019ANRdyL2jfi7ysWhqN4PfD
matrix-nio's AsyncClient.set_presence() is called every 60s in a
background task so Matrix clients see the bot as online. On shutdown
the bot sets itself to offline.
https://claude.ai/code/session_01DuzWyMMXvLMB4VxEwJyV4X
Replace Bellhop scaffolding with full Melora implementation:
- FastAPI webhook endpoints for Radarr, Sonarr, and Lidarr
- matrix-nio integration with threaded room posting
- SQLite for thread root persistence and event deduplication
- Message formatting with plain text and HTML for each media type
- Shared secret authentication via X-Arr-Webhook-Secret header
- Updated dependencies, configuration, and documentation
https://claude.ai/code/session_01DuzWyMMXvLMB4VxEwJyV4X
