a4bf4367e6
- Worker-watcher retired; file events come from NC webhook_listeners.
- Thumbnails proxy /index.php/core/preview keyed by photos.nextcloud_fileid.
- backfill_gps auto-trigger killed (was queueing ~60k tasks per deploy).
- Range support added to /api/v1/photos/{id}/original so .mov plays.
- NC cron tightened to */1 for ~60s webhook latency.