fix(meeting): 修复录音文件名生成与文件遍历问题

修复录音文件名中可能包含路径分隔符的问题，新增 sanitizeRecordingFileStem 方法处理本地化标题中的特殊字符
修复文件遍历时未递归查找子目录的问题，使用 recursive: true 参数
修复活动录音文件比较时未统一使用 basename 的问题，避免路径不匹配

lib/modules/meeting/controllers/meeting_home_controller.dart

@@ -222,9 +222,10 @@ class MeetingHomeController extends GetxController {
 
       for (final dir in sourceDirs) {
         if (await dir.exists()) {
-          //遍历每个源目录，筛选出文件实体（仅包含文件，不包含子目录）
-          final files =
-              await dir.list().where((entity) => entity is File).toList();
+          final files = await dir
+              .list(recursive: true, followLinks: false)
+              .where((entity) => entity is File)
+              .toList();
           allFiles.addAll(files); //合并到总文件列表
         }
       }
@@ -233,8 +234,10 @@ class MeetingHomeController extends GetxController {
       for (final fileEntity in allFiles) {
         try {
           final entityName = path.basename(fileEntity.path);
-          if (activeRecordingWavName != null &&
-              entityName == activeRecordingWavName) {
+          final activeName = activeRecordingWavName == null
+              ? null
+              : path.basename(activeRecordingWavName);
+          if (activeName != null && entityName == activeName) {
             continue;
           }
 
@@ -356,7 +359,7 @@ class MeetingHomeController extends GetxController {
     if (!controller.isRecording.value) return null;
     final name = controller.fileName.value;
     if (name.isEmpty) return null;
-    return '$name.wav';
+    return path.basename('$name.wav');
   }
 
   // 新增（2025-11-04）：将翻译音频归档到 LocalAudio 并返回新路径（优先 rename，失败再 copy+delete）

lib/modules/meeting/controllers/meeting_record_controller.dart

@@ -12,6 +12,7 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:get/get.dart';
 import 'package:intl/intl.dart';
 import 'package:floating_ui_plugin/native_plugin.dart';
+import 'package:path/path.dart' as path;
 import 'package:path_provider/path_provider.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
@@ -37,6 +38,43 @@ class MeetingRecordController extends GetxController
 
   static FlutterLocalNotificationsPlugin? _localNotificationsPlugin;
   final NativePlugin _nativePlugin = NativePlugin();
+
+  static String sanitizeRecordingFileStem(
+    String input, {
+    String fallback = 'recording',
+  }) {
+    final trimmed = input.trim();
+    if (trimmed.isEmpty) return fallback;
+
+    var safe = trimmed
+        .replaceAll(RegExp(r'[\\/:*?"<>|]'), '_')
+        .replaceAll(RegExp(r'[\u0000-\u001F]'), '_')
+        .replaceAll(RegExp(r'\s+'), '_')
+        .replaceAll(RegExp(r'_+'), '_');
+
+    safe = safe.replaceAll(RegExp(r'^\.+'), '');
+    safe = safe.replaceAll(RegExp(r'^_+|_+$'), '');
+
+    if (safe.isEmpty) return fallback;
+    if (safe.length > 80) {
+      safe = safe.substring(0, 80);
+    }
+    return safe;
+  }
+
+  String _defaultRecordingFileStem() {
+    switch (audioType.value) {
+      case 0:
+        return 'live_recording';
+      case 1:
+        return 'audio_video_recording';
+      case 2:
+        return 'call_recording';
+      default:
+        return 'recording';
+    }
+  }
+
   Timer? _recordingFloatingBarTimer;
   Timer? _routeMonitorTimer;
   StreamSubscription<String>? _recordingFloatingActionSubscription;
@@ -536,15 +574,19 @@ class MeetingRecordController extends GetxController
 
     // Generate timestamped filename
     final formattedTime = DateFormat('yyyyMMdd_HHmmss').format(DateTime.now());
-    final fullFileName = "${fileName.value}_$formattedTime";
+    final baseTitle = newName.value.isNotEmpty ? newName.value : fileName.value;
+    final safeBase = sanitizeRecordingFileStem(
+      baseTitle,
+      fallback: _defaultRecordingFileStem(),
+    );
+    final fullFileName = "${safeBase}_$formattedTime";
+    final filePath = path.join(dir.path, '$fullFileName.wav');
 
-    if (fileName.value == "liveRecording".tr) {
-      await _asrService.enableRecord(false, "${dir.path}$fullFileName.wav",
-          acceptAudioData: true);
-    } else {
-      await _asrService.enableRecord(true, "${dir.path}$fullFileName.wav",
-          acceptAudioData: true);
-    }
+    await _asrService.enableRecord(
+      audioType.value != 0,
+      filePath,
+      acceptAudioData: true,
+    );
 
     // 通过 asrService 获取音频数据流
     _audioDataSubscription =

test/meeting_record_i18n_test.dart

@@ -0,0 +1,31 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:voitrans/modules/meeting/controllers/meeting_record_controller.dart';
+
+void main() {
+  group('MeetingRecordController.sanitizeRecordingFileStem', () {
+    test('removes path separators from localized titles', () {
+      final safe = MeetingRecordController.sanitizeRecordingFileStem(
+        'Audio/Video Recording',
+      );
+      expect(safe.contains('/'), isFalse);
+      expect(safe.contains('\\'), isFalse);
+      expect(safe, isNotEmpty);
+    });
+
+    test('works for other locales that contain "/"', () {
+      final safe = MeetingRecordController.sanitizeRecordingFileStem(
+        'تسجيل صوت/فيديو',
+      );
+      expect(safe.contains('/'), isFalse);
+      expect(safe, isNotEmpty);
+    });
+
+    test('falls back when sanitized result is empty', () {
+      final safe = MeetingRecordController.sanitizeRecordingFileStem(
+        '///',
+        fallback: 'fallback',
+      );
+      expect(safe, 'fallback');
+    });
+  });
+}