Initial commit: COPILOT D6 Flutter keyboard controller

Flutter web app replacing legacy WPF CCTV surveillance keyboard controller.
Includes wall overview, section view with monitor grid, camera input,
PTZ control, alarm/lock/sequence BLoCs, and legacy-matching UI styling.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

copilot_keyboard/lib/presentation/blocs/camera/camera_bloc.dart

@@ -0,0 +1,64 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import '../../../config/app_config.dart';
+import '../../../data/services/bridge_service.dart';
+import 'camera_event.dart';
+import 'camera_state.dart';
+
+class CameraBloc extends Bloc<CameraEvent, CameraState> {
+  final BridgeService _bridgeService;
+  final AppConfig _config;
+
+  CameraBloc({
+    required BridgeService bridgeService,
+    required AppConfig config,
+  })  : _bridgeService = bridgeService,
+        _config = config,
+        super(CameraState(availableCameras: config.allCameraIds)) {
+    on<SelectCamera>(_onSelectCamera);
+    on<ConnectCameraToMonitor>(_onConnectCameraToMonitor);
+    on<ClearCameraSelection>(_onClearCameraSelection);
+  }
+
+  void _onSelectCamera(
+    SelectCamera event,
+    Emitter<CameraState> emit,
+  ) {
+    emit(state.copyWith(selectedCameraId: event.cameraId, error: null));
+  }
+
+  Future<void> _onConnectCameraToMonitor(
+    ConnectCameraToMonitor event,
+    Emitter<CameraState> emit,
+  ) async {
+    emit(state.copyWith(isConnecting: true, error: null));
+
+    try {
+      final success = await _bridgeService.viewerConnectLive(
+        event.monitorId,
+        event.cameraId,
+      );
+
+      if (success) {
+        emit(state.copyWith(isConnecting: false));
+      } else {
+        emit(state.copyWith(
+          isConnecting: false,
+          error: 'Failed to connect camera ${event.cameraId} to monitor ${event.monitorId}',
+        ));
+      }
+    } catch (e) {
+      emit(state.copyWith(
+        isConnecting: false,
+        error: e.toString(),
+      ));
+    }
+  }
+
+  void _onClearCameraSelection(
+    ClearCameraSelection event,
+    Emitter<CameraState> emit,
+  ) {
+    emit(state.copyWith(clearSelection: true, error: null));
+  }
+}