- Create highlightsController with subscription API and event store integration
- Auto-load user highlights on app start (alongside bookmarks and contacts)
- Store highlight events in applesauce event store for offline support
- Update Me.tsx to use controller for own profile highlights
- Add optional eventStore parameter to all highlight fetch functions
- Pass eventStore through Debug component for persistent storage
- Implement incremental sync with localStorage-based lastSyncedAt tracking
- Add generation-based cancellation for in-flight requests
- Reset highlights on logout
Closes #highlights-controller
