cf47fee07e
Daniel resolved the open questions: high-res compute for all media (B); the waveform datum is per-track, not per-release (release is just the host — dissolves the multi-track-Cut question); full-parity lava controls on all detail hosts. Splits 12.B into compute+backfill / fetch+bridge; renames the scaffold slot to Ambient. NowPlaying-card controls left as open sub-question.