Update task task-001

backlog/tasks/task-001 - offline-local-storage.md

@@ -4,9 +4,36 @@ title: offline local storage
 status: To Do
 assignee: []
 created_date: '2025-12-03 23:42'
-updated_date: '2025-12-04 12:13'
-labels: []
+updated_date: '2025-12-04 20:25'
+labels:
+  - feature
+  - offline
+  - persistence
+  - indexeddb
 dependencies: []
+priority: high
 ---
 
+## Description
 
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Add IndexedDB persistence layer to the existing Automerge sync system. Board data should be cached locally for offline access, with graceful online/offline transitions.
+
+Key requirements:
+- Store board state in IndexedDB (not localStorage - 5MB limit insufficient)
+- Integrate with existing useAutomergeSync hook
+- Detect online/offline status and show connection indicator
+- Sync local changes when connection restores
+- Handle Safari's 7-day eviction with service worker touch
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [ ] #1 IndexedDB schema for board documents and assets
+- [ ] #2 Persist Automerge document to IndexedDB on changes
+- [ ] #3 Load from IndexedDB on initial page load (before WebSocket connects)
+- [ ] #4 Online/offline status detection with UI indicator
+- [ ] #5 Queue local changes during offline and sync on reconnect
+- [ ] #6 Handle storage quota limits gracefully
+- [ ] #7 Safari 7-day eviction mitigation via service worker
+<!-- AC:END -->