feat: video/audio metadata scanning, profile rename fix, route tests
- Scan .mp4/.mov/.avi/.mkv and .mp3/.flac/.ogg/.m4a/.wma (+ 7 more)
for GPS coordinates, artist/author, title, comment — metadata only,
no frame or audio analysis. Uses mutagen (added to requirements.txt).
GPS-tagged phone recordings now flag with gps_location like photos.
- Fix _extract_audio_metadata silently returning empty results:
mutagen.File() first positional arg is `filename`, not `fileobj` —
was passing BytesIO as the filename. Fixed to keyword args.
- Fix profile copy rename not reflected in left column until modal
reopen: _pmgmtSaveFullEdit called loadProfiles() but never
_renderProfileMgmt(). Added re-render and active-row highlight.
- Add TestProfileRoutes (10 tests) covering all profile API endpoints
including a rename regression test. Total: 182 tests.
- generate_fixtures.py now produces 6 audio/video fixtures (14–19):
2 MP3, 2 FLAC, 2 MP4 — 4 flagged, 2 negative cases.
