feat(desktop): add toggle to hide unchanged regions in diff viewer#845
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Add a fold icon button in the diff viewer toolbar that toggles Monaco's hideUnchangedRegions option. This collapses unchanged code sections to help focus on actual changes. The setting is persisted in the changes store.
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📝 WalkthroughWalkthroughThis pull request implements a feature to hide unchanged regions in diff views. It introduces a new Changes
Sequence DiagramsequenceDiagram
participant User
participant FileViewerToolbar
participant ChangesStore
participant FileViewerPane
participant FileViewerContent
participant DiffViewer
participant MonacoEditor
User->>FileViewerToolbar: Clicks fold toggle button
FileViewerToolbar->>ChangesStore: onToggleHideUnchangedRegions()
ChangesStore->>ChangesStore: toggleHideUnchangedRegions() updates state
ChangesStore-->>FileViewerPane: state.hideUnchangedRegions updated
FileViewerPane->>FileViewerContent: passes hideUnchangedRegions prop
FileViewerPane->>FileViewerToolbar: passes updated hideUnchangedRegions
FileViewerToolbar-->>User: updates button styling/tooltip
FileViewerContent->>DiffViewer: passes hideUnchangedRegions prop
DiffViewer->>MonacoEditor: configures hideUnchangedRegions option
MonacoEditor-->>User: hides/shows unchanged regions
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~20 minutes Possibly related PRs
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🚥 Pre-merge checks | ✅ 2 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (2 passed)
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Add background and shadow styling to clearly distinguish the active toggle option from inactive ones in the Raw/Diff/Rendered toggle group.
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This was referenced Jan 21, 2026
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Summary
hideUnchangedRegionsoption to focus on actual changesTest plan
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