feat: Add Nanaxe server with Docker, GitHub Actions CI/CD, and auto-deployment

- Add complete server infrastructure with Gitea, API, PostgreSQL
- Implement Obsidian-compatible markdown mindmap converter
- Add Flutter service for server synchronization
- Configure GitHub Actions for automated build and deploy
- Add production docker-compose with health checks
- Include VPS setup and deployment scripts
- Add comprehensive deployment documentation

lib/screens/home_screen.dart

@@ -3,7 +3,6 @@ import 'dashboard_screen.dart';
 import 'tasks_screen.dart';
 import 'mind_map_screen.dart';
 import 'calendar_screen.dart';
-import 'alarms_screen.dart';
 
 class HomeScreen extends StatefulWidget {
   const HomeScreen({super.key});