The two library quality jobs overlapped confusingly. Keep both, but make
each one's role obvious and put them on the same v3 quality definition.
Quality Upgrade Finder (quality_upgrade) — the ACTIVE job:
- Quality decision moved from v2 (extension + DB bitrate) to v3: probes the
REAL file with mutagen (measured bit depth / sample rate / bitrate) and
checks it against the profile's ranked targets — same as the import guard.
- New optional `deep_audio_verify` setting (default OFF): also run the ffmpeg
decode guard (truncation + silence); a broken file is proposed for replacement.
- Renamed to "Quality Upgrade Finder (active — proposes a replacement)" + help
text spells out it actively searches a better version and queues it.
- v3 helpers imported at module level so they stay monkeypatchable in tests.
Quality Check (quality_upgrade_scanner) — the FLAG-ONLY job:
- `deep_audio_verify` default flipped ON->OFF (the ffmpeg decode is the
CPU-heavy step; matches the download pipeline's default).
- Renamed to "Quality Check (flag only — you decide per finding)" + help text
contrasts it with the active Finder.
UI: deep_audio_verify setting label now shows "(ffmpeg decode — CPU heavy)".
Tests: scan() tests stub the v3 probe path (probe_audio_quality /
quality_meets_profile / resolve_library_file_path) since they use fake paths.
The v2 pure-function helpers stay (still unit-tested).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
d169818043