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/calendar_screen.dart

@@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:table_calendar/table_calendar.dart';
 import '../models/calendar_event_model.dart';
-import '../core/google_calendar_service.dart';
 
 class CalendarScreen extends ConsumerStatefulWidget {
   const CalendarScreen({super.key});
@@ -267,8 +266,8 @@ class _CalendarScreenState extends ConsumerState<CalendarScreen> {
     final descriptionController = TextEditingController();
     final locationController = TextEditingController();
 
-    TimeOfDay _startTime = const TimeOfDay(hour: 10, minute: 0);
-    TimeOfDay _endTime = const TimeOfDay(hour: 11, minute: 0);
+    TimeOfDay startTime = const TimeOfDay(hour: 10, minute: 0);
+    TimeOfDay endTime = const TimeOfDay(hour: 11, minute: 0);
 
     showDialog(
       context: context,
@@ -312,16 +311,16 @@ class _CalendarScreenState extends ConsumerState<CalendarScreen> {
                     Expanded(
                       child: ListTile(
                         title: const Text('Начало'),
-                        subtitle: Text(_startTime.format(context)),
+                        subtitle: Text(startTime.format(context)),
                         leading: const Icon(Icons.access_time),
                         onTap: () async {
                           final picked = await showTimePicker(
                             context: context,
-                            initialTime: _startTime,
+                            initialTime: startTime,
                           );
                           if (picked != null) {
                             setDialogState(() {
-                              _startTime = picked;
+                              startTime = picked;
                             });
                           }
                         },
@@ -330,16 +329,16 @@ class _CalendarScreenState extends ConsumerState<CalendarScreen> {
                     Expanded(
                       child: ListTile(
                         title: const Text('Конец'),
-                        subtitle: Text(_endTime.format(context)),
+                        subtitle: Text(endTime.format(context)),
                         leading: const Icon(Icons.access_time),
                         onTap: () async {
                           final picked = await showTimePicker(
                             context: context,
-                            initialTime: _endTime,
+                            initialTime: endTime,
                           );
                           if (picked != null) {
                             setDialogState(() {
-                              _endTime = picked;
+                              endTime = picked;
                             });
                           }
                         },