feat: add Control Room with containers and stacks management

- Add Control Room page with stacks sidebar and containers list
- Implement container actions (start/stop/restart) with snackbars
- Add container logs viewer dialog
- Add search/filter for both stacks and containers lists
- Add external links for Portainer and Netdata (url_launcher)
- Add VS Code launch configuration for Flutter web debugging

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lib/routing/app_router.dart

@@ -2,8 +2,9 @@ import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
-import '../shared/layouts/app_scaffold.dart';
+import '../features/control_room/presentation/pages/control_room_page.dart';
 import '../features/front_hall/presentation/pages/front_hall_page.dart';
+import '../shared/layouts/app_scaffold.dart';
 
 part 'app_router.g.dart';
 
@@ -35,26 +36,7 @@ GoRouter appRouter(AppRouterRef ref) {
           GoRoute(
             path: AppRoutes.controlRoom,
             name: 'controlRoom',
-            builder: (context, state) =>
-                const _PlaceholderPage(title: 'Control Room'),
-            routes: [
-              GoRoute(
-                path: 'containers',
-                name: 'containers',
-                builder: (context, state) =>
-                    const _PlaceholderPage(title: 'Containers'),
-                routes: [
-                  GoRoute(
-                    path: ':id',
-                    name: 'containerDetail',
-                    builder: (context, state) {
-                      final id = state.pathParameters['id']!;
-                      return _PlaceholderPage(title: 'Container: $id');
-                    },
-                  ),
-                ],
-              ),
-            ],
+            builder: (context, state) => const ControlRoomPage(),
           ),
           GoRoute(
             path: AppRoutes.parlor,