feat: 重构会话管理与提醒通知系统

apps/lib/features/home/presentation/screens/home_screen.dart

@@ -52,6 +52,7 @@ class HomeScreen extends StatefulWidget {
   final VoiceRecorder? voiceRecorder;
   final Future<String> Function(String filePath)? onTranscribeAudio;
   final ChatBloc? chatBloc;
+  final String? initialUserId;
   final bool autoLoadHistory;
   final List<XFile> initialSelectedImages;
 
@@ -60,6 +61,7 @@ class HomeScreen extends StatefulWidget {
     this.voiceRecorder,
     this.onTranscribeAudio,
     this.chatBloc,
+    this.initialUserId,
     this.autoLoadHistory = true,
     this.initialSelectedImages = const [],
   });
@@ -119,7 +121,10 @@ class _HomeScreenState extends State<HomeScreen>
       duration: const Duration(milliseconds: _rippleDurationMs),
     );
     _selectedImages.addAll(widget.initialSelectedImages);
-    if (widget.autoLoadHistory &&
+    final initialUserId = widget.initialUserId?.trim();
+    if (initialUserId != null && initialUserId.isNotEmpty) {
+      unawaited(_chatBloc.switchUser(initialUserId));
+    } else if (widget.autoLoadHistory &&
         _chatBloc.state.items.isEmpty &&
         !_chatBloc.state.isLoadingHistory) {
       _chatBloc.loadHistory();
@@ -166,6 +171,20 @@ class _HomeScreenState extends State<HomeScreen>
     }
   }
 
+  @override
+  void didUpdateWidget(covariant HomeScreen oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    final oldUserId = oldWidget.initialUserId?.trim();
+    final newUserId = widget.initialUserId?.trim();
+    if (oldUserId == newUserId) {
+      return;
+    }
+    final normalized = (newUserId != null && newUserId.isNotEmpty)
+        ? newUserId
+        : null;
+    unawaited(_chatBloc.switchUser(normalized));
+  }
+
   @override
   void didPopNext() {
     unawaited(_inboxSyncStore.refreshSnapshot());