Resolve Phase 8 open question 0.3 — TrackDto gets a nested Release
(ReleaseDto); flat release fields removed, all consumers updated as
part of §8.0 (flat read-model rejected). Add §0.6 implementation
sequencing: five mergeable waves with Waves 1+2 as a single deployment
unit and Waves 3+4 parallelizable. Update PLAN.md §8.0 Shape to match.
Add §8.0 TrackEntity → Release/Track normalization as a breaking
pre-requisite before Phase 8 UI. Fold in review decisions: Waveform tab
removed (in-grid status column + per-row/page-level generate),
ViewModel is DI-scoped (TracksViewModel pattern), BatchEdit confirmed as
a new page sharing extracted sub-components. Dissolve the AlbumSummaryDto
widening question (Release table supplies the fields directly).
daniel-c-harvey