The text-rendering:geometricPrecision rule (b7bd9565) shifted glyph advances
~1% in headless Chrome. Baselines for png-sequence, heygen-promo-preview-assets,
and sub-composition-video were already regenerated — sub-comp-t0 was missed.
Also improves the fixture's visual contrast:
- Background: #07110d (near-black) → #0f172a (slate-900)
- Hook scene: background #1e293b, text #ef4444/#ffffff
- Later scene: background #334155, text #ffffff
- Absolute positioning for text elements (compiler inlines sub-comp
content at intrinsic width, collapsing the flex container)
Baseline regenerated inside Dockerfile.test per CLAUDE.md. Test passes:
0 failed frames, 100/100 checkpoints green.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Create sub-comp-t0 and sub-comp-id-selector as proper regression tests
under packages/producer/tests/ with golden MP4 baselines
- Add both to shard-7 in regression.yml
- Add clarifying comment on activateNestedChildTimelines scope
- Confirm test fixture network safety in comment
