#40 Judge annotations were stale+wrong: labels came from a hardcoded ROLE_MAP
(orbit-03 'hats' though punkachien.tidal plays 'dr'; d6/meth_bass missing) and a
hard -38dB on/off gate hid audible orbits that dip within a 2s bin (PLN saw only
d3 OR d8 while hearing both).
- tidal_score.py: parse per-orbit sound map from any .tidal (reuses tfidf vocab;
  also accepts the bare $ "sample" source form). dr/meth_bass/jungle_breaks now correct.
- audio_lens: classify_family() (breaks->tops, drums->percs by identity, register
  by measured centroid), profile peak_db. Fix orbit_files to try padded+unpadded
  channel names (Take89 uses 'Tidal 01-1' -> centroids were silently None).
- build_player_data: labels from score, family validated by centroid, two
  thresholds (litFloorDb -52 visible / activeDb -38 driving), emits validated PlayerData.
- OrbitRail: graded activation (dim->vivid), no orbit vanishes when quiet.

#42 DRY: pydantic models in models.py are the single source of truth; gen_ts_types.py
generates ui/src/types.gen.ts (types.ts is now a re-export). No more hand-synced shapes.

#41 WaveformPlayer: Audacity-style zoom (+/-/ctrl-wheel) + scroll, drag-select a span
and loop it (Regions plugin), keyboard L=loop. tsc + vite build green.