Davy7/27/2026, 11:20:08 AM

* fix(ui): stop painting the same separation progress twice

Single-song separation and uploads keep one full progress bar in the
global task list; song rows use a compact status chip. Batch runs keep
complementary surfaces: aggregate total globally, compact per-song bar
on the active row. Measure virtual list rows when height changes so an
expanded batch row does not overlap neighbours.

* ci: align actions/checkout version comments with the pinned SHA

The checkout pin 3d3c42e… is v7.0.1. mirror.yml still said v4 and
spectral-candidate.yml said v5, which tripped zizmor ref-version-mismatch
alerts #390 and #397.

* chore: prefer self-explanatory code over rationale comments

Update Agents.md engineering rules: constraints and design rationale
belong in commit messages or ADRs, not source. Strip the narrative
comments added with the progress-bar UI change.

* test: drop narrative comments from progress UI tests

* chore: strip narrative comments and cover progress-bar edge paths

Update AGENTS.md so design rationale lives in commits/ADRs, not source.
Remove frontend RATIONALE essays and multi-line product narration that
the old engineering rules encouraged. Cover compact TaskProgressBar
clamping/indeterminate fill and SongList virtual measure helpers so
patch coverage stays green.

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