When a user finishes watching on their media server, a webhook fires and
Sofa logs it as watched, triggering all existing auto-transitions. Each
user configures their connection in settings and gets a unique webhook URL.
- Add webhookConnections and webhookEventLog schema tables
- Add TMDB findByExternalId for resolving IMDB/TVDB IDs
- Add source parameter to tracking functions (plex/jellyfin)
- Add webhook processing service with payload parsers, title resolution,
and deduplication
- Add public webhook receiver route (token-based auth)
- Add authenticated settings API routes for managing connections
- Add Media Servers section to settings UI with Plex/Jellyfin cards
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
