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fix(studio): scope timeline ease focus lifecycle#2710

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fix(studio): scope timeline ease focus lifecycle#2710
miguel-heygen wants to merge 1 commit into
codex/studio-timeline-e-beat-gestures-v2from
codex/studio-timeline-e-ease-focus-lifecycle-v2

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@miguel-heygen

@miguel-heygen miguel-heygen commented Jul 21, 2026

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What

Scope timeline ease-focus requests to the active project, selection, inspector session, animation, and request nonce.

Why

An inspector can remount or selection can change after an ease button is clicked. A stale consumer must not focus another clip's animation or clear a newer request.

How

  • Stamp each focus request with project, session epoch, selected element, animation, and monotonic nonce.
  • Consume only requests valid for the current inspector and clear only the nonce that was consumed.
  • Invalidate requests on project reset or genuine selection-anchor changes while preserving same-anchor echoes.
  • Keep Family F navigation and Family G thumbnail APIs outside this stack.

This is E7 and the tip of the independent Family E draft Graphite stack. Its immutable Family D review baseline is not a PR and is never a merge target.

Test plan

  • Unit tests added/updated
  • Manual testing performed
  • Documentation updated (not applicable)

Validated on the exact Family E tip with 130 focused interaction tests, 3 timeline virtualization tests, the full Studio suite (2,991 passed; 18 todos), Studio typecheck/build, the full workspace build, oxfmt, oxlint, diff hygiene, and file-size/Fallow gates.

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