root ecd8bbe61d fix: HEIC vips fallback, DB pool exhaustion, auth session persistence ...

HEIC thumbnails:
- Switch fallback from ffmpeg to vips for HEIC files that pillow-heif
  rejects. ffmpeg decoded gain map tiles instead of the primary image,
  producing inverted/negative thumbnails. vips uses libheif's item
  references correctly and extracts the full-resolution primary image.

Database pool exhaustion:
- Add idle_in_transaction_session_timeout=60s so Postgres auto-kills
  leaked connections from disconnected thumbnail requests.
- Add pool_timeout=10 so new requests fail fast instead of hanging.
- Bump pool from 5+5 to 10+10 for thumbnail concurrency headroom.
- get_db rolls back on exception before closing.

Auth session persistence:
- Narrow 401 interceptor exclusion to only /auth/refresh and /auth/login
  (was excluding all /auth/* including /auth/me, preventing token refresh
  on boot).
- fetchMe only clears tokens on 401/403, not network errors.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-13 15:25:55 +02:00

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