Add expandAll/collapseAll to diffs#349

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atamarzban wants to merge 3 commits intopierrecomputer:mainfrom

atamarzban:ata/diffs-expand-collapse-all

Commits on Feb 24, 2026

[diffs] add expandAll/collapseAll to DiffHunksRenderer

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[diffs] expose expandAll/collapseAll API and add header toggle button

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claude
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[diffs] add tests for expandAll/collapseAll and update snapshots

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claude
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