删除未使用的相机和记录类来重构记录功能；更新pubspec中的依赖项。Yaml为本地插件路径；简化MainActivity和相关类，以提高性能和可维护性。

lib/features/recording/platform/recording_platform.dart

@@ -1,4 +1,3 @@
-import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/services.dart';
@@ -22,20 +21,20 @@ enum RecordingState {
 class RecordingStatus {
   const RecordingStatus({
     required this.state,
-    this.outputPath,
+    this.streamUrl,
     this.elapsedMillis = 0,
     this.message,
   });
 
   final RecordingState state;
-  final String? outputPath;
+  final String? streamUrl;
   final int elapsedMillis;
   final String? message;
 
   factory RecordingStatus.fromMap(Map<dynamic, dynamic> map) {
     return RecordingStatus(
       state: RecordingState.fromRaw(map['state'] as String?),
-      outputPath: map['outputPath'] as String?,
+      streamUrl: map['streamUrl'] as String?,
       elapsedMillis: (map['elapsedMillis'] as num?)?.toInt() ?? 0,
       message: map['message'] as String?,
     );
@@ -50,9 +49,6 @@ class RecordingPlatform {
   static const MethodChannel _channel = MethodChannel(
     RecordingChannelNames.method,
   );
-  static const EventChannel _events = EventChannel(
-    RecordingChannelNames.events,
-  );
 
   static bool get isSupported =>
       supportsHost(isAndroid: Platform.isAndroid, isIOS: Platform.isIOS);
@@ -61,76 +57,6 @@ class RecordingPlatform {
     return isAndroid || isIOS;
   }
 
-  static Stream<RecordingStatus>? _statusStream;
-
-  static Stream<RecordingStatus> statusStream() {
-    if (!isSupported) {
-      return const Stream.empty();
-    }
-    _statusStream ??= _events.receiveBroadcastStream().map(
-      (event) =>
-          RecordingStatus.fromMap(Map<dynamic, dynamic>.from(event as Map)),
-    );
-    return _statusStream!;
-  }
-
-  static Future<RecordingStatus> initializePreview() async {
-    final result = await _channel.invokeMapMethod<String, dynamic>(
-      'initializePreview',
-    );
-    return RecordingStatus.fromMap(result ?? const {});
-  }
-
-  static Future<RecordingZoomCapabilities> getZoomCapabilities() async {
-    final result = await _channel.invokeMapMethod<String, dynamic>(
-      'getZoomCapabilities',
-    );
-    return RecordingZoomCapabilities.fromMap(result);
-  }
-
-  static Future<RecordingZoomCapabilities> setZoomRatio(double ratio) async {
-    final result = await _channel.invokeMapMethod<String, dynamic>(
-      'setZoomRatio',
-      <String, dynamic>{'zoomRatio': ratio},
-    );
-    return RecordingZoomCapabilities.fromMap(result);
-  }
-
-  static Future<RecordingStartResult> startRecording({
-    bool withAudio = true,
-    bool enableDoNotDisturb = true,
-    String? displayName,
-  }) async {
-    final args = <String, dynamic>{
-      'withAudio': withAudio,
-      'enableDoNotDisturb': enableDoNotDisturb,
-    };
-    if (displayName != null) {
-      args['displayName'] = displayName;
-    }
-
-    final result = await _channel.invokeMapMethod<String, dynamic>(
-      'startRecording',
-      args,
-    );
-    return RecordingStartResult(
-      outputPath: result?['outputPath'] as String?,
-      status: RecordingStatus.fromMap(
-        Map<dynamic, dynamic>.from(result?['status'] as Map? ?? const {}),
-      ),
-    );
-  }
-
-  static Future<RecordingStopResult> stopRecording() async {
-    final result = await _channel.invokeMapMethod<String, dynamic>(
-      'stopRecording',
-    );
-    return RecordingStopResult.fromMap(result);
-  }
-
-  static Future<void> disposePreview() =>
-      _channel.invokeMethod('disposePreview');
-
   static Future<bool> hasNotificationPolicyAccess() async {
     return await _channel.invokeMethod<bool>('hasNotificationPolicyAccess') ??
         false;
@@ -164,71 +90,4 @@ class RecordingPlatform {
       'enabled': enabled,
     });
   }
-
-  static Future<RecordingStatus> getStatus() async {
-    final result = await _channel.invokeMapMethod<String, dynamic>('getStatus');
-    return RecordingStatus.fromMap(result ?? const {});
-  }
-}
-
-class RecordingZoomCapabilities {
-  const RecordingZoomCapabilities({
-    required this.zoomRatio,
-    required this.minZoomRatio,
-    required this.maxZoomRatio,
-  });
-
-  final double zoomRatio;
-  final double minZoomRatio;
-  final double maxZoomRatio;
-
-  factory RecordingZoomCapabilities.fromMap(Map<String, dynamic>? map) {
-    final minZoomRatio = (map?['minZoomRatio'] as num?)?.toDouble() ?? 1.0;
-    final maxZoomRatio = (map?['maxZoomRatio'] as num?)?.toDouble() ?? 3.0;
-    final zoomRatio = (map?['zoomRatio'] as num?)?.toDouble() ?? minZoomRatio;
-    return RecordingZoomCapabilities(
-      zoomRatio: zoomRatio.clamp(minZoomRatio, maxZoomRatio).toDouble(),
-      minZoomRatio: minZoomRatio,
-      maxZoomRatio: maxZoomRatio,
-    );
-  }
-}
-
-class RecordingStartResult {
-  const RecordingStartResult({this.outputPath, required this.status});
-
-  final String? outputPath;
-  final RecordingStatus status;
-}
-
-class RecordingStopResult {
-  const RecordingStopResult({
-    this.outputPath,
-    required this.status,
-    this.fileSaved = true,
-    this.fileErrorMessage,
-    this.segmentOutputPaths = const [],
-  });
-
-  final String? outputPath;
-  final RecordingStatus status;
-  final bool fileSaved;
-  final String? fileErrorMessage;
-  final List<String> segmentOutputPaths;
-
-  factory RecordingStopResult.fromMap(Map<String, dynamic>? result) {
-    return RecordingStopResult(
-      outputPath: result?['outputPath'] as String?,
-      status: RecordingStatus.fromMap(
-        Map<dynamic, dynamic>.from(result?['status'] as Map? ?? const {}),
-      ),
-      fileSaved: result?['fileSaved'] as bool? ?? true,
-      fileErrorMessage: result?['fileErrorMessage'] as String?,
-      segmentOutputPaths:
-          (result?['segmentOutputPaths'] as List?)?.whereType<String>().toList(
-            growable: false,
-          ) ??
-          const [],
-    );
-  }
 }