fix(studio): harden composition timeline reliability (#2615)

* fix(studio): preserve composition playback continuity

* feat(studio): drag compositions into the timeline

* fix(studio): collapse expanded composition move aliases

* fix(studio): make timeline cuts atomic

* fix(studio): group inspector gesture history

* test(studio): cover masked text selection

* fix(studio): harden composition timeline reliability

* fix(studio): satisfy CI source gates

* fix(studio): harden composition mutation requests
This commit is contained in:
Miguel Ángel
2026-07-17 14:15:30 -04:00
committed by GitHub
parent 2be8a62c00
commit 2b65b4efce
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# Composition reliability acceptance fixture
Compact, media-free Studio project for validating composition editing as one stack:
- two root hosts reuse `title-card.html` at different times;
- `nested-shell.html` hosts the same title card one level deeper;
- the title card uses a transparent overflow mask around an editable headline;
- adjacent clips on one track provide a clean collision/new-track drop target;
- a cross-track overlap exercises normal visual layering.
Copy this directory to scratch before browser acceptance. Exercise open, composition insert,
single/multi move, collision placement, overlap layering, cut, headline color/font-size, and one-step
undo. The checked-in fixture must remain unchanged.