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/ptz/ptz_event.dart

@@ -0,0 +1,90 @@
+import 'package:equatable/equatable.dart';
+
+abstract class PtzEvent extends Equatable {
+  const PtzEvent();
+
+  @override
+  List<Object?> get props => [];
+}
+
+/// Start panning
+class PtzPanStart extends PtzEvent {
+  final int cameraId;
+  final String direction; // 'left' or 'right'
+  final int speed;
+
+  const PtzPanStart({
+    required this.cameraId,
+    required this.direction,
+    this.speed = 50,
+  });
+
+  @override
+  List<Object?> get props => [cameraId, direction, speed];
+}
+
+/// Start tilting
+class PtzTiltStart extends PtzEvent {
+  final int cameraId;
+  final String direction; // 'up' or 'down'
+  final int speed;
+
+  const PtzTiltStart({
+    required this.cameraId,
+    required this.direction,
+    this.speed = 50,
+  });
+
+  @override
+  List<Object?> get props => [cameraId, direction, speed];
+}
+
+/// Start zooming
+class PtzZoomStart extends PtzEvent {
+  final int cameraId;
+  final String direction; // 'in' or 'out'
+  final int speed;
+
+  const PtzZoomStart({
+    required this.cameraId,
+    required this.direction,
+    this.speed = 50,
+  });
+
+  @override
+  List<Object?> get props => [cameraId, direction, speed];
+}
+
+/// Stop all PTZ movement
+class PtzStop extends PtzEvent {
+  final int cameraId;
+
+  const PtzStop(this.cameraId);
+
+  @override
+  List<Object?> get props => [cameraId];
+}
+
+/// Go to preset
+class PtzGoToPreset extends PtzEvent {
+  final int cameraId;
+  final int preset;
+
+  const PtzGoToPreset({
+    required this.cameraId,
+    required this.preset,
+  });
+
+  @override
+  List<Object?> get props => [cameraId, preset];
+}
+
+/// Set camera for PTZ control
+class PtzSetCamera extends PtzEvent {
+  final int? cameraId;
+
+  const PtzSetCamera(this.cameraId);
+
+  @override
+  List<Object?> get props => [cameraId];
+}