Replaces the simplified resolutions+4-sources+codec model with a real quality
ladder to actually stand in for Radarr/Sonarr:
- tiers: source×resolution ladder (Remux-2160p … SDTV) as one ranked, toggleable
list, best→worst, with a cutoff (stop upgrading once the library holds a tier
at/above it — no endless re-grabbing).
- rejects: hard blocks (cam/screener/workprint/3d, optional x264).
- soft preferences (score/tie-break, never reject alone): prefer_codec (any/hevc/av1),
prefer_hdr (off/prefer/require), prefer_audio (any/surround/lossless/atmos),
prefer_repack.
- size guard: min/max GB per item (0 = no limit), min pinned to a real cap.
Pure normalize/load/save (no DB/network), isolated from music. API endpoint is an
unchanged passthrough. 12 tests green, ruff clean. UI next.
23cefd3c15