updating current status

TODO.md

@@ -71,5 +71,11 @@
 - [ ] Message encryption improvements
 
 ## Current Status
-- 🚀 Starting with Phase 1.1 - MVVM Architecture
-- Target: Create a maintainable, testable architecture
+- ✅ Phase 1.1 - MVVM Architecture - COMPLETED
+- ✅ Phase 2.1 - Connection Status Management - COMPLETED
+- 🚀 Next: Phase 1.2 (Dependency Injection) or Phase 3 (Data Persistence)
+
+## Completed Work Summary
+1. **MVVM Architecture**: ViewModels, Repository pattern, proper separation of concerns
+2. **Connection Status**: Visual indicator with real-time updates, activity-based detection
+3. **Sleep/Wake Handling**: Auto-recovery when messages resume after device sleep