feat: 应用名称更新为灵可析并增强 Chat 功能

- 更新 Android/iOS 应用名称和图标为灵可析
- Chat 支持取消正在运行的 Agent 对话
- 改进 ChatBloc 状态管理（区分发送/等待/流式/取消状态）
- HomeScreen 支持外部注入 ChatBloc 和显示等待指示器
- 后端 Agent 运行服务优化（消息处理、usage 追踪）
- 补充相关单元测试和 Widget 测试

apps/android/app/src/main/AndroidManifest.xml

@@ -4,7 +4,7 @@
 
     <application
         android:usesCleartextTraffic="true"
-        android:label="social_app"
+        android:label="灵可析"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity

apps/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+  <background android:drawable="@color/ic_launcher_background"/>
+  <foreground>
+      <inset
+          android:drawable="@drawable/ic_launcher_foreground"
+          android:inset="16%" />
+  </foreground>
+</adaptive-icon>

apps/android/app/src/main/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FFFFFF</color>
+</resources>

apps/ios/Runner.xcodeproj/project.pbxproj

@@ -427,7 +427,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = AppIcon;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -484,7 +484,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = AppIcon;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";

apps/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,122 +1 @@
-{
-  "images" : [
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-20x20@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-29x29@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-40x40@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "60x60",
-      "idiom" : "iphone",
-      "filename" : "Icon-App-60x60@3x.png",
-      "scale" : "3x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "20x20",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-20x20@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "29x29",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-29x29@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "40x40",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-40x40@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@1x.png",
-      "scale" : "1x"
-    },
-    {
-      "size" : "76x76",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-76x76@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "83.5x83.5",
-      "idiom" : "ipad",
-      "filename" : "Icon-App-83.5x83.5@2x.png",
-      "scale" : "2x"
-    },
-    {
-      "size" : "1024x1024",
-      "idiom" : "ios-marketing",
-      "filename" : "Icon-App-1024x1024@1x.png",
-      "scale" : "1x"
-    }
-  ],
-  "info" : {
-    "version" : 1,
-    "author" : "xcode"
-  }
-}
+{"images":[{"size":"20x20","idiom":"iphone","filename":"Icon-App-20x20@2x.png","scale":"2x"},{"size":"20x20","idiom":"iphone","filename":"Icon-App-20x20@3x.png","scale":"3x"},{"size":"29x29","idiom":"iphone","filename":"Icon-App-29x29@1x.png","scale":"1x"},{"size":"29x29","idiom":"iphone","filename":"Icon-App-29x29@2x.png","scale":"2x"},{"size":"29x29","idiom":"iphone","filename":"Icon-App-29x29@3x.png","scale":"3x"},{"size":"40x40","idiom":"iphone","filename":"Icon-App-40x40@2x.png","scale":"2x"},{"size":"40x40","idiom":"iphone","filename":"Icon-App-40x40@3x.png","scale":"3x"},{"size":"57x57","idiom":"iphone","filename":"Icon-App-57x57@1x.png","scale":"1x"},{"size":"57x57","idiom":"iphone","filename":"Icon-App-57x57@2x.png","scale":"2x"},{"size":"60x60","idiom":"iphone","filename":"Icon-App-60x60@2x.png","scale":"2x"},{"size":"60x60","idiom":"iphone","filename":"Icon-App-60x60@3x.png","scale":"3x"},{"size":"20x20","idiom":"ipad","filename":"Icon-App-20x20@1x.png","scale":"1x"},{"size":"20x20","idiom":"ipad","filename":"Icon-App-20x20@2x.png","scale":"2x"},{"size":"29x29","idiom":"ipad","filename":"Icon-App-29x29@1x.png","scale":"1x"},{"size":"29x29","idiom":"ipad","filename":"Icon-App-29x29@2x.png","scale":"2x"},{"size":"40x40","idiom":"ipad","filename":"Icon-App-40x40@1x.png","scale":"1x"},{"size":"40x40","idiom":"ipad","filename":"Icon-App-40x40@2x.png","scale":"2x"},{"size":"50x50","idiom":"ipad","filename":"Icon-App-50x50@1x.png","scale":"1x"},{"size":"50x50","idiom":"ipad","filename":"Icon-App-50x50@2x.png","scale":"2x"},{"size":"72x72","idiom":"ipad","filename":"Icon-App-72x72@1x.png","scale":"1x"},{"size":"72x72","idiom":"ipad","filename":"Icon-App-72x72@2x.png","scale":"2x"},{"size":"76x76","idiom":"ipad","filename":"Icon-App-76x76@1x.png","scale":"1x"},{"size":"76x76","idiom":"ipad","filename":"Icon-App-76x76@2x.png","scale":"2x"},{"size":"83.5x83.5","idiom":"ipad","filename":"Icon-App-83.5x83.5@2x.png","scale":"2x"},{"size":"1024x1024","idiom":"ios-marketing","filename":"Icon-App-1024x1024@1x.png","scale":"1x"}],"info":{"version":1,"author":"xcode"}}

apps/ios/Runner/Info.plist

@@ -5,7 +5,7 @@
 	<key>CFBundleDevelopmentRegion</key>
 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 	<key>CFBundleDisplayName</key>
-	<string>Social App</string>
+	<string>灵可析</string>
 	<key>CFBundleExecutable</key>
 	<string>$(EXECUTABLE_NAME)</string>
 	<key>CFBundleIdentifier</key>
@@ -13,7 +13,7 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
-	<string>social_app</string>
+	<string>灵可析</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>

apps/lib/features/chat/data/services/ag_ui_service.dart

@@ -25,6 +25,7 @@ class AgUiService {
   final MockHistoryService _historyService;
   final Map<String, List<String>> _mockSseLinesByThread = {};
   final Map<String, String> _lastEventIdByThread = {};
+  int _activeStreamToken = 0;
 
   String? _threadId;
   bool _hasMoreHistory = false;
@@ -41,6 +42,7 @@ class AgUiService {
   }
 
   Future<void> sendMessage(String content) async {
+    final streamToken = ++_activeStreamToken;
     final runInput = _buildRunInput(content: content);
     final response = await _apiClient.post<Map<String, dynamic>>(
       '/api/v1/agent/runs',
@@ -55,7 +57,7 @@ class AgUiService {
       throw StateError('Missing threadId in /agent/runs response');
     }
     _threadId = threadId;
-    await _streamEventsFromApi(threadId);
+    await _streamEventsFromApi(threadId, streamToken: streamToken);
   }
 
   Future<void> loadHistory({DateTime? beforeDate}) async {
@@ -105,6 +107,7 @@ class AgUiService {
     required String toolName,
     required Map<String, dynamic> args,
   }) async {
+    final streamToken = ++_activeStreamToken;
     final threadId = _threadId;
     if (threadId == null || threadId.isEmpty) {
       throw StateError('Missing threadId for resume');
@@ -150,7 +153,7 @@ class AgUiService {
         _threadId = responseThreadId;
       }
     }
-    await _streamEventsFromApi(threadId);
+    await _streamEventsFromApi(threadId, streamToken: streamToken);
   }
 
   bool hasEarlierHistory(DateTime fromDate) {
@@ -160,7 +163,14 @@ class AgUiService {
     return _hasMoreHistory;
   }
 
-  Future<void> _streamEventsFromApi(String threadId) async {
+  Future<void> cancelCurrentRun() async {
+    _activeStreamToken += 1;
+  }
+
+  Future<void> _streamEventsFromApi(
+    String threadId, {
+    required int streamToken,
+  }) async {
     final lastEventId = _lastEventIdByThread[threadId];
     final headers = <String, String>{'Accept': 'text/event-stream'};
     if (lastEventId != null && lastEventId.isNotEmpty) {
@@ -175,6 +185,9 @@ class AgUiService {
     String? eventId;
     final dataBuffer = StringBuffer();
     await for (final line in sseLines) {
+      if (streamToken != _activeStreamToken) {
+        break;
+      }
       if (line.isEmpty) {
         if (dataBuffer.isNotEmpty) {
           final raw = dataBuffer.toString();

apps/lib/features/chat/presentation/bloc/chat_bloc.dart

@@ -11,7 +11,11 @@ import '../../data/services/ag_ui_service.dart';
 
 class ChatState {
   final List<ChatListItem> items;
-  final bool isLoading;
+  final bool isSending;
+  final bool isWaitingFirstToken;
+  final bool isStreaming;
+  final bool isCancelling;
+  final bool isLoadingHistory;
   final String? currentMessageId;
   final String? error;
   final DateTime? oldestLoadedDate;
@@ -19,18 +23,33 @@ class ChatState {
 
   const ChatState({
     this.items = const [],
-    this.isLoading = false,
+    this.isSending = false,
+    this.isWaitingFirstToken = false,
+    this.isStreaming = false,
+    this.isCancelling = false,
+    this.isLoadingHistory = false,
     this.currentMessageId,
     this.error,
     this.oldestLoadedDate,
     this.hasEarlierHistory = false,
   });
 
+  bool get isLoading =>
+      isSending ||
+      isWaitingFirstToken ||
+      isStreaming ||
+      isCancelling ||
+      isLoadingHistory;
+
   static const _unset = Object();
 
   ChatState copyWith({
     List<ChatListItem>? items,
-    bool? isLoading,
+    bool? isSending,
+    bool? isWaitingFirstToken,
+    bool? isStreaming,
+    bool? isCancelling,
+    bool? isLoadingHistory,
     Object? currentMessageId = _unset,
     Object? error = _unset,
     Object? oldestLoadedDate = _unset,
@@ -38,7 +57,11 @@ class ChatState {
   }) {
     return ChatState(
       items: items ?? this.items,
-      isLoading: isLoading ?? this.isLoading,
+      isSending: isSending ?? this.isSending,
+      isWaitingFirstToken: isWaitingFirstToken ?? this.isWaitingFirstToken,
+      isStreaming: isStreaming ?? this.isStreaming,
+      isCancelling: isCancelling ?? this.isCancelling,
+      isLoadingHistory: isLoadingHistory ?? this.isLoadingHistory,
       currentMessageId: currentMessageId == _unset
           ? this.currentMessageId
           : currentMessageId as String?,
@@ -72,12 +95,36 @@ class ChatBloc extends Cubit<ChatState> {
   void _handleEvent(AgUiEvent event) {
     switch (event.type) {
       case AgUiEventType.runStarted:
-        emit(state.copyWith(isLoading: true, error: null));
+        emit(
+          state.copyWith(
+            isSending: false,
+            isWaitingFirstToken: true,
+            isCancelling: false,
+            error: null,
+          ),
+        );
       case AgUiEventType.runFinished:
-        emit(state.copyWith(isLoading: false, currentMessageId: null));
+        emit(
+          state.copyWith(
+            isSending: false,
+            isWaitingFirstToken: false,
+            isStreaming: false,
+            isCancelling: false,
+            currentMessageId: null,
+          ),
+        );
       case AgUiEventType.runError:
         final errorEvent = event as RunErrorEvent;
-        emit(state.copyWith(isLoading: false, error: errorEvent.message));
+        emit(
+          state.copyWith(
+            isSending: false,
+            isWaitingFirstToken: false,
+            isStreaming: false,
+            isCancelling: false,
+            currentMessageId: null,
+            error: errorEvent.message,
+          ),
+        );
       case AgUiEventType.textMessageStart:
         _handleTextMessageStart(event as TextMessageStartEvent);
       case AgUiEventType.textMessageContent:
@@ -115,6 +162,8 @@ class ChatBloc extends Cubit<ChatState> {
       state.copyWith(
         items: [...state.items, newMessage],
         currentMessageId: startEvent.messageId,
+        isWaitingFirstToken: false,
+        isStreaming: true,
       ),
     );
   }
@@ -136,7 +185,13 @@ class ChatBloc extends Cubit<ChatState> {
       }
       return item;
     }).toList();
-    emit(state.copyWith(items: updatedItems, currentMessageId: null));
+    emit(
+      state.copyWith(
+        items: updatedItems,
+        currentMessageId: null,
+        isStreaming: false,
+      ),
+    );
   }
 
   void _handleToolCallStart(ToolCallStartEvent startEvent) {
@@ -319,20 +374,50 @@ class ChatBloc extends Cubit<ChatState> {
       timestamp: DateTime.now(),
       sender: MessageSender.user,
     );
-    emit(state.copyWith(items: [...state.items, userMessage]));
-    await _service.sendMessage(content);
+    emit(
+      state.copyWith(
+        items: [...state.items, userMessage],
+        isSending: true,
+        isWaitingFirstToken: true,
+        isStreaming: false,
+        isCancelling: false,
+        error: null,
+      ),
+    );
+    try {
+      await _service.sendMessage(content);
+    } catch (error) {
+      emit(
+        state.copyWith(
+          isSending: false,
+          isWaitingFirstToken: false,
+          isStreaming: false,
+          isCancelling: false,
+          error: error.toString(),
+        ),
+      );
+    }
   }
 
   Future<void> loadHistory() async {
-    if (state.isLoading) return;
-    await _service.loadHistory();
+    if (state.isLoadingHistory) return;
+    emit(state.copyWith(isLoadingHistory: true));
+    try {
+      await _service.loadHistory();
+    } finally {
+      emit(state.copyWith(isLoadingHistory: false));
+    }
   }
 
   Future<void> loadMoreHistory() async {
-    if (state.isLoading || !state.hasEarlierHistory) return;
+    if (state.isLoadingHistory || !state.hasEarlierHistory) return;
     if (state.oldestLoadedDate == null) return;
-
-    await _service.loadHistory(beforeDate: state.oldestLoadedDate);
+    emit(state.copyWith(isLoadingHistory: true));
+    try {
+      await _service.loadHistory(beforeDate: state.oldestLoadedDate);
+    } finally {
+      emit(state.copyWith(isLoadingHistory: false));
+    }
   }
 
   Future<void> approveToolCall(String toolCallId) async {
@@ -355,7 +440,16 @@ class ChatBloc extends Cubit<ChatState> {
       }
       return item;
     }).toList();
-    emit(state.copyWith(items: updatedItems, isLoading: true, error: null));
+    emit(
+      state.copyWith(
+        items: updatedItems,
+        isSending: false,
+        isWaitingFirstToken: true,
+        isStreaming: false,
+        isCancelling: false,
+        error: null,
+      ),
+    );
     try {
       await _service.approveToolCall(
         toolCallId: target.callId,
@@ -375,7 +469,10 @@ class ChatBloc extends Cubit<ChatState> {
       emit(
         state.copyWith(
           items: failedItems,
-          isLoading: false,
+          isSending: false,
+          isWaitingFirstToken: false,
+          isStreaming: false,
+          isCancelling: false,
           error: error.toString(),
         ),
       );
@@ -386,6 +483,31 @@ class ChatBloc extends Cubit<ChatState> {
     return _service.transcribeAudio(filePath);
   }
 
+  Future<bool> cancelCurrentRun() async {
+    if (!(state.isWaitingFirstToken ||
+        state.isStreaming ||
+        state.isCancelling)) {
+      return false;
+    }
+    emit(state.copyWith(isCancelling: true, error: null));
+    try {
+      await _service.cancelCurrentRun();
+      emit(
+        state.copyWith(
+          isSending: false,
+          isWaitingFirstToken: false,
+          isStreaming: false,
+          isCancelling: false,
+          currentMessageId: null,
+        ),
+      );
+      return true;
+    } catch (error) {
+      emit(state.copyWith(isCancelling: false, error: error.toString()));
+      return false;
+    }
+  }
+
   void clearError() {
     emit(state.copyWith(error: null));
   }

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

@@ -31,6 +31,8 @@ const _rippleDurationMs = 1200;
 const _recordingDotSize = 10.0;
 const _transcribingSpinnerSize = 18.0;
 const _transcribingStrokeWidth = 2.0;
+const _inputActionButtonKey = ValueKey('home_input_action_button');
+const _inputActionIconKey = ValueKey('home_input_action_icon');
 
 /// 颜色常量
 const _chatBgColor = Color(0xFFF8FAFC);
@@ -40,6 +42,7 @@ class HomeScreen extends StatefulWidget {
   final VoiceRecorder? voiceRecorder;
   final Future<String> Function(String filePath)? onTranscribeAudio;
   final Future<void> Function(String transcript)? onAutoSendTranscript;
+  final ChatBloc? chatBloc;
   final bool autoLoadHistory;
 
   const HomeScreen({
@@ -47,6 +50,7 @@ class HomeScreen extends StatefulWidget {
     this.voiceRecorder,
     this.onTranscribeAudio,
     this.onAutoSendTranscript,
+    this.chatBloc,
     this.autoLoadHistory = true,
   });
 
@@ -72,7 +76,7 @@ class _HomeScreenState extends State<HomeScreen>
   void initState() {
     super.initState();
     _messageController.addListener(_onMessageChanged);
-    _chatBloc = ChatBloc();
+    _chatBloc = widget.chatBloc ?? ChatBloc();
     _voiceRecorder = widget.voiceRecorder ?? RecordVoiceRecorder();
     _transcribeAudio =
         widget.onTranscribeAudio ?? _chatBloc.transcribeAudioFile;
@@ -93,7 +97,9 @@ class _HomeScreenState extends State<HomeScreen>
     _scrollController.dispose();
     _listeningAnimationController.dispose();
     _voiceRecorder.dispose();
-    _chatBloc.close();
+    if (widget.chatBloc == null) {
+      _chatBloc.close();
+    }
     RouteNavigationTool.instance.clearNavigator();
     super.dispose();
   }
@@ -131,7 +137,7 @@ class _HomeScreenState extends State<HomeScreen>
                 children: [
                   _buildHeader(context),
                   Expanded(child: _buildChatArea(context, state)),
-                  _buildInputContainer(context),
+                  _buildInputContainer(context, state),
                 ],
               ),
             ),
@@ -185,49 +191,100 @@ class _HomeScreenState extends State<HomeScreen>
   }
 
   Widget _buildChatArea(BuildContext context, ChatState state) {
-    if (state.isLoading && state.items.isEmpty) {
+    final showWaitingIndicator =
+        state.isWaitingFirstToken || state.isStreaming || state.isCancelling;
+
+    if (state.isLoadingHistory && state.items.isEmpty) {
       return const Center(child: CircularProgressIndicator());
     }
 
     if (state.items.isEmpty) {
-      return const Center(
-        child: Text(
-          '开始对话吧',
-          style: TextStyle(fontSize: 16, color: AppColors.slate400),
-        ),
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          const Expanded(
+            child: Center(
+              child: Text(
+                '开始对话吧',
+                style: TextStyle(fontSize: 16, color: AppColors.slate400),
+              ),
+            ),
+          ),
+          if (showWaitingIndicator) _buildWaitingIndicator(),
+        ],
       );
     }
 
-    return RefreshIndicator(
-      onRefresh: () => _onRefresh(context),
-      child: ListView.builder(
-        controller: _scrollController,
-        physics: const AlwaysScrollableScrollPhysics(),
-        padding: const EdgeInsets.all(_defaultPadding),
-        itemCount: state.items.length + (state.hasEarlierHistory ? 1 : 0),
-        itemBuilder: (context, index) {
-          if (index == 0 && state.hasEarlierHistory) {
-            return _buildLoadMoreButton(context, state.isLoading);
-          }
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        Expanded(
+          child: RefreshIndicator(
+            onRefresh: () => _onRefresh(context),
+            child: ListView.builder(
+              controller: _scrollController,
+              physics: const AlwaysScrollableScrollPhysics(),
+              padding: const EdgeInsets.all(_defaultPadding),
+              itemCount: state.items.length + (state.hasEarlierHistory ? 1 : 0),
+              itemBuilder: (context, index) {
+                if (index == 0 && state.hasEarlierHistory) {
+                  return _buildLoadMoreButton(context, state.isLoadingHistory);
+                }
 
-          final itemIndex = state.hasEarlierHistory ? index - 1 : index;
-          final item = state.items[itemIndex];
+                final itemIndex = state.hasEarlierHistory ? index - 1 : index;
+                final item = state.items[itemIndex];
 
-          final showDateDivider =
-              itemIndex == 0 ||
-              !_isSameDay(state.items[itemIndex - 1].timestamp, item.timestamp);
+                final showDateDivider =
+                    itemIndex == 0 ||
+                    !_isSameDay(
+                      state.items[itemIndex - 1].timestamp,
+                      item.timestamp,
+                    );
 
-          return Column(
-            crossAxisAlignment: CrossAxisAlignment.stretch,
-            children: [
-              if (showDateDivider) _buildDateDivider(item.timestamp),
-              Padding(
-                padding: const EdgeInsets.only(bottom: _itemSpacing),
-                child: _buildChatItem(item),
-              ),
-            ],
-          );
-        },
+                return Column(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                  children: [
+                    if (showDateDivider) _buildDateDivider(item.timestamp),
+                    Padding(
+                      padding: const EdgeInsets.only(bottom: _itemSpacing),
+                      child: _buildChatItem(item),
+                    ),
+                  ],
+                );
+              },
+            ),
+          ),
+        ),
+        if (showWaitingIndicator) _buildWaitingIndicator(),
+      ],
+    );
+  }
+
+  Widget _buildWaitingIndicator() {
+    return Padding(
+      padding: const EdgeInsets.fromLTRB(
+        _defaultPadding,
+        0,
+        _defaultPadding,
+        _defaultPadding,
+      ),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: const [
+          SizedBox(
+            width: _transcribingSpinnerSize,
+            height: _transcribingSpinnerSize,
+            child: CircularProgressIndicator(
+              strokeWidth: _transcribingStrokeWidth,
+              color: AppColors.blue600,
+            ),
+          ),
+          SizedBox(width: 8),
+          Text(
+            '正在思考...',
+            style: TextStyle(fontSize: 14, color: AppColors.slate500),
+          ),
+        ],
       ),
     );
   }
@@ -406,7 +463,9 @@ class _HomeScreenState extends State<HomeScreen>
     return UiSchemaRenderer.render(item.uiCard);
   }
 
-  Widget _buildInputContainer(BuildContext context) {
+  Widget _buildInputContainer(BuildContext context, ChatState state) {
+    final isWaitingAgent =
+        state.isWaitingFirstToken || state.isStreaming || state.isCancelling;
     return Container(
       padding: const EdgeInsets.all(_inputPadding),
       color: _chatBgColor,
@@ -471,10 +530,13 @@ class _HomeScreenState extends State<HomeScreen>
                   ),
                   const SizedBox(width: 8),
                   GestureDetector(
+                    key: _inputActionButtonKey,
                     onTap: _isTranscribing
                         ? null
                         : _isRecording
                         ? () => _stopRecording(autoSendAfterTranscribe: true)
+                        : isWaitingAgent
+                        ? () => _onStopGenerating(context)
                         : _hasMessage
                         ? () => _sendMessage(context)
                         : _startRecording,
@@ -488,11 +550,14 @@ class _HomeScreenState extends State<HomeScreen>
                             ),
                           )
                         : Icon(
-                            _isRecording || _hasMessage
+                            key: _inputActionIconKey,
+                            _isRecording || isWaitingAgent
+                                ? LucideIcons.square
+                                : _hasMessage
                                 ? LucideIcons.send
                                 : LucideIcons.mic,
                             size: _iconSize,
-                            color: _isRecording || _hasMessage
+                            color: _isRecording || isWaitingAgent || _hasMessage
                                 ? AppColors.blue600
                                 : AppColors.slate500,
                           ),
@@ -511,7 +576,7 @@ class _HomeScreenState extends State<HomeScreen>
     if (content.isEmpty) return;
     FocusScope.of(context).unfocus();
     _messageController.clear();
-    context.read<ChatBloc>().sendMessage(content);
+    await context.read<ChatBloc>().sendMessage(content);
 
     WidgetsBinding.instance.addPostFrameCallback((_) {
       if (_scrollController.hasClients) {
@@ -524,6 +589,16 @@ class _HomeScreenState extends State<HomeScreen>
     });
   }
 
+  Future<void> _onStopGenerating(BuildContext context) async {
+    final canceled = await context.read<ChatBloc>().cancelCurrentRun();
+    if (!mounted) {
+      return;
+    }
+    if (canceled) {
+      Toast.show(context, '已停止等待回复', type: ToastType.info);
+    }
+  }
+
   Widget _buildListeningIndicator() {
     return SizedBox(
       height: _inputMinHeight,

apps/pubspec.yaml

@@ -31,8 +31,17 @@ dev_dependencies:
   mocktail: ^1.0.4
   json_serializable: ^6.7.1
   build_runner: ^2.4.8
+  flutter_launcher_icons: ^0.14.0
 
 flutter:
   uses-material-design: true
   assets:
     - assets/images/
+
+flutter_launcher_icons:
+  android: true
+  ios: true
+  image_path: "assets/images/logo.png"
+  adaptive_icon_background: "#FFFFFF"
+  adaptive_icon_foreground: "assets/images/logo.png"
+  remove_alpha_ios: true

apps/test/features/chat/chat_bloc_test.dart

@@ -12,6 +12,15 @@ class MockAgUiService extends AgUiService {
   Future<void> sendMessage(String content) async {}
 }
 
+class _ThrowingAgUiService extends AgUiService {
+  _ThrowingAgUiService() : super(onEvent: (_) {});
+
+  @override
+  Future<void> sendMessage(String content) async {
+    throw StateError('network down');
+  }
+}
+
 void main() {
   late ChatBloc chatBloc;
   late AgUiService service;
@@ -29,6 +38,9 @@ void main() {
     test('initial state is empty', () {
       expect(chatBloc.state.items, isEmpty);
       expect(chatBloc.state.isLoading, false);
+      expect(chatBloc.state.isSending, false);
+      expect(chatBloc.state.isWaitingFirstToken, false);
+      expect(chatBloc.state.isStreaming, false);
       expect(chatBloc.state.currentMessageId, isNull);
       expect(chatBloc.state.error, isNull);
     });
@@ -40,6 +52,12 @@ void main() {
       expect: () => [
         isA<ChatState>()
             .having((state) => state.items.length, 'items length', 1)
+            .having((state) => state.isSending, 'isSending', true)
+            .having(
+              (state) => state.isWaitingFirstToken,
+              'isWaitingFirstToken',
+              true,
+            )
             .having(
               (state) => state.items.first,
               'first item',
@@ -56,15 +74,13 @@ void main() {
       'textMessageStart event adds AI message with streaming',
       build: () => chatBloc,
       act: (bloc) {
-        bloc.emit(chatBloc.state.copyWith(isLoading: true));
+        bloc.emit(chatBloc.state.copyWith(isStreaming: true));
         service.onEvent(
           TextMessageStartEvent(messageId: 'msg_1', role: 'assistant'),
         );
       },
       expect: () => [
-        isA<ChatState>()
-            .having((s) => s.isLoading, 'isLoading', true)
-            .having((s) => s.isLoading, 'isLoading', true),
+        isA<ChatState>().having((s) => s.isStreaming, 'isStreaming', true),
         isA<ChatState>()
             .having((s) => s.items.length, 'items length', 1)
             .having((s) => s.currentMessageId, 'currentMessageId', 'msg_1')
@@ -128,6 +144,7 @@ void main() {
       expect: () => [
         isA<ChatState>()
             .having((s) => s.currentMessageId, 'currentMessageId', isNull)
+            .having((s) => s.isStreaming, 'isStreaming', false)
             .having(
               (s) => (s.items.first as TextMessageItem).isStreaming,
               'isStreaming',
@@ -145,6 +162,7 @@ void main() {
       expect: () => [
         isA<ChatState>()
             .having((s) => s.isLoading, 'isLoading', true)
+            .having((s) => s.isWaitingFirstToken, 'isWaitingFirstToken', true)
             .having((s) => s.error, 'error', isNull),
       ],
     );
@@ -152,7 +170,7 @@ void main() {
     blocTest<ChatBloc, ChatState>(
       'runFinished sets isLoading to false',
       build: () => chatBloc,
-      seed: () => const ChatState(isLoading: true),
+      seed: () => const ChatState(isWaitingFirstToken: true),
       act: (bloc) {
         service.onEvent(RunFinishedEvent(threadId: 't1', runId: 'r1'));
       },
@@ -166,7 +184,7 @@ void main() {
     blocTest<ChatBloc, ChatState>(
       'runError sets error message',
       build: () => chatBloc,
-      seed: () => const ChatState(isLoading: true),
+      seed: () => const ChatState(isWaitingFirstToken: true),
       act: (bloc) {
         service.onEvent(
           RunErrorEvent(message: 'Something went wrong', code: 'ERR'),
@@ -175,10 +193,40 @@ void main() {
       expect: () => [
         isA<ChatState>()
             .having((s) => s.isLoading, 'isLoading', false)
+            .having((s) => s.currentMessageId, 'currentMessageId', isNull)
             .having((s) => s.error, 'error', 'Something went wrong'),
       ],
     );
 
+    blocTest<ChatBloc, ChatState>(
+      'cancelCurrentRun exits waiting states',
+      build: () => chatBloc,
+      seed: () => const ChatState(isWaitingFirstToken: true),
+      act: (bloc) => bloc.cancelCurrentRun(),
+      expect: () => [
+        isA<ChatState>().having((s) => s.isCancelling, 'isCancelling', true),
+        isA<ChatState>()
+            .having((s) => s.isWaitingFirstToken, 'isWaitingFirstToken', false)
+            .having((s) => s.isStreaming, 'isStreaming', false)
+            .having((s) => s.isCancelling, 'isCancelling', false),
+      ],
+    );
+
+    blocTest<ChatBloc, ChatState>(
+      'sendMessage failure emits error and exits waiting state',
+      build: () => ChatBloc(service: _ThrowingAgUiService()),
+      act: (bloc) => bloc.sendMessage('hello'),
+      expect: () => [
+        isA<ChatState>()
+            .having((s) => s.isSending, 'isSending', true)
+            .having((s) => s.isWaitingFirstToken, 'isWaitingFirstToken', true),
+        isA<ChatState>()
+            .having((s) => s.isSending, 'isSending', false)
+            .having((s) => s.isWaitingFirstToken, 'isWaitingFirstToken', false)
+            .having((s) => s.error, 'error', contains('network down')),
+      ],
+    );
+
     blocTest<ChatBloc, ChatState>(
       'clearError removes error',
       build: () => chatBloc,

apps/test/features/home/ui/screens/home_screen_test.dart

@@ -5,6 +5,9 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:social_app/core/api/api_exception.dart';
+import 'package:social_app/features/chat/data/models/ag_ui_event.dart';
+import 'package:social_app/features/chat/data/services/ag_ui_service.dart';
+import 'package:social_app/features/chat/presentation/bloc/chat_bloc.dart';
 import 'package:social_app/features/home/data/voice_recorder.dart';
 import 'package:social_app/features/home/ui/screens/home_screen.dart';
 
@@ -29,7 +32,26 @@ class _FakeVoiceRecorder implements VoiceRecorder {
   Future<void> dispose() async {}
 }
 
+class _WaitingAgUiService extends AgUiService {
+  _WaitingAgUiService() : super(onEvent: (_) {});
+
+  final Completer<void> _pending = Completer<void>();
+
+  @override
+  Future<void> sendMessage(String content) async {
+    onEvent(RunStartedEvent(threadId: 't1', runId: 'r1'));
+    return _pending.future;
+  }
+}
+
 void main() {
+  IconData _inputActionIcon(WidgetTester tester) {
+    final icon = tester.widget<Icon>(
+      find.byKey(const ValueKey('home_input_action_icon')),
+    );
+    return icon.icon!;
+  }
+
   group('HomeScreen Widget Tests', () {
     testWidgets('displays input field', (WidgetTester tester) async {
       await tester.pumpWidget(
@@ -79,8 +101,7 @@ void main() {
 
       expect(fakeRecorder.started, true);
       expect(find.text('正在聆听...'), findsOneWidget);
-      expect(find.byIcon(LucideIcons.square), findsOneWidget);
-      expect(find.byIcon(LucideIcons.send), findsOneWidget);
+      expect(_inputActionIcon(tester), LucideIcons.square);
     });
 
     testWidgets('tap send while recording transcribes and auto sends message', (
@@ -105,9 +126,9 @@ void main() {
       );
       await tester.pumpAndSettle();
 
-      await tester.tap(find.byIcon(LucideIcons.mic));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
-      await tester.tap(find.byIcon(LucideIcons.send));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump(const Duration(milliseconds: 300));
 
       expect(sentTranscript, '语音自动发送');
@@ -127,18 +148,19 @@ void main() {
               expect(filePath.endsWith('.wav'), true);
               return '语音转文字结果';
             },
+            onAutoSendTranscript: (_) async {},
           ),
         ),
       );
       await tester.pumpAndSettle();
 
-      await tester.tap(find.byIcon(LucideIcons.mic));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
-      await tester.tap(find.byIcon(LucideIcons.square));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
 
       expect(find.text('语音识别中...'), findsOneWidget);
-      expect(find.byType(CircularProgressIndicator), findsOneWidget);
+      expect(find.byType(CircularProgressIndicator), findsAtLeastNWidgets(1));
     });
 
     testWidgets('tap stop shows readable unauthorized message', (
@@ -158,9 +180,9 @@ void main() {
       );
       await tester.pumpAndSettle();
 
-      await tester.tap(find.byIcon(LucideIcons.mic));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
-      await tester.tap(find.byIcon(LucideIcons.square));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump(const Duration(milliseconds: 300));
 
       expect(find.text('请重新登录'), findsOneWidget);
@@ -182,9 +204,9 @@ void main() {
       );
       await tester.pumpAndSettle();
 
-      await tester.tap(find.byIcon(LucideIcons.mic));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
-      await tester.tap(find.byIcon(LucideIcons.square));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump(const Duration(milliseconds: 300));
 
       expect(find.text('未识别到有效语音，请靠近麦克风并连续说话后重试'), findsOneWidget);
@@ -203,14 +225,15 @@ void main() {
             voiceRecorder: fakeRecorder,
             autoLoadHistory: false,
             onTranscribeAudio: (_) => completer.future,
+            onAutoSendTranscript: (_) async {},
           ),
         ),
       );
       await tester.pumpAndSettle();
 
-      await tester.tap(find.byIcon(LucideIcons.mic));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
-      await tester.tap(find.byIcon(LucideIcons.square));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
 
       expect(find.text('语音识别中...'), findsOneWidget);
@@ -237,7 +260,7 @@ void main() {
       );
       expect(editableBefore.widget.focusNode.hasFocus, isTrue);
 
-      await tester.tap(find.byIcon(LucideIcons.send));
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
       await tester.pump();
 
       final editableAfter = tester.state<EditableTextState>(
@@ -247,5 +270,33 @@ void main() {
 
       await tester.pump(const Duration(milliseconds: 300));
     });
+
+    testWidgets('shows stop icon and waiting indicator while waiting agent', (
+      WidgetTester tester,
+    ) async {
+      final chatBloc = ChatBloc(service: _WaitingAgUiService());
+      await tester.pumpWidget(
+        MaterialApp(
+          home: HomeScreen(autoLoadHistory: false, chatBloc: chatBloc),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      await tester.enterText(find.byType(TextField), 'hello');
+      await tester.pump();
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
+      await tester.pump();
+
+      expect(_inputActionIcon(tester), LucideIcons.square);
+      expect(find.text('正在思考...'), findsOneWidget);
+
+      await tester.tap(find.byKey(const ValueKey('home_input_action_button')));
+      await tester.pump();
+
+      expect(find.text('已停止等待回复'), findsOneWidget);
+      await tester.pump(const Duration(seconds: 3));
+
+      await chatBloc.close();
+    });
   });
 }