diff --git a/backlog/tasks/task-033 - Version-History-&-Reversion-System-with-Visual-Diffs.md b/backlog/tasks/task-033 - Version-History-&-Reversion-System-with-Visual-Diffs.md
index 62986a5..b891cd3 100644
--- a/backlog/tasks/task-033 - Version-History-&-Reversion-System-with-Visual-Diffs.md	
+++ b/backlog/tasks/task-033 - Version-History-&-Reversion-System-with-Visual-Diffs.md	
@@ -1,9 +1,10 @@
 ---
 id: task-033
 title: Version History & Reversion System with Visual Diffs
-status: In Progress
+status: Done
 assignee: []
 created_date: '2025-12-04 21:44'
+updated_date: '2025-12-04 23:01'
 labels:
   - feature
   - version-control
@@ -46,3 +47,37 @@ Key features:
 - [ ] #9 User's last-seen state stored in localStorage for diff comparison
 - [ ] #10 Visual effects are subtle and non-intrusive
 <!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Implementation complete in feature/version-reversion worktree:
+
+**Files Created:**
+- src/lib/versionHistory.ts - Core version history utilities
+- src/lib/permissions.ts - Role-based permission system
+- src/components/VersionHistoryButton.tsx - Time-rewind icon button
+- src/components/VersionHistoryPanel.tsx - Panel with 3 tabs
+- src/components/DeletedShapesOverlay.tsx - Floating deleted shapes indicator
+- src/hooks/useVersionHistory.ts - React hook for state management
+- src/hooks/usePermissions.ts - Permission context hook
+- src/css/version-history.css - Visual effects CSS
+
+**Files Modified:**
+- src/ui/CustomToolbar.tsx - Added VersionHistoryButton
+- src/ui/components.tsx - Added DeletedShapesOverlay
+- src/css/style.css - Imported version-history.css
+- worker/worker.ts - Added /api/versions endpoints
+
+**Features Implemented:**
+1. Time-rewind button next to star dashboard
+2. Version History Panel with Changes/Versions/Deleted tabs
+3. localStorage tracking of user's last-seen state
+4. Yellow glow animation for new shapes
+5. Dim grey effect for deleted shapes
+6. Floating indicator with restore options
+7. R2 integration for version snapshots
+8. Permission system (admin/editor/viewer roles)
+
+Commit: 03894d2
+<!-- SECTION:NOTES:END -->