refactor(agent): - 重构时间戳显示为行布局并添加AI生成标识

lib/modules/agent/views/message_bubble.dart

@@ -46,8 +46,6 @@ class MessageBubble extends GetView<AgentController> {
             isUser ? MainAxisAlignment.end : MainAxisAlignment.start,
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          //if (!isUser) _buildAvatar(isUser, context),
-          //const SizedBox(width: 8),
           Flexible(
             child: Column(
               crossAxisAlignment:
@@ -90,21 +88,42 @@ class MessageBubble extends GetView<AgentController> {
                 const SizedBox(height: 4),
                 // 识别中的消息不显示时间
                 if (!isRecognizing)
-                  Text(
-                    timeFormat.format(timestamp),
-                    style: TextStyle(
-                      fontSize: 10,
-                      color: Theme.of(context).brightness == Brightness.dark
-                          ? Colors.grey[400]
-                          : Colors.grey[500],
-                      fontWeight: FontWeight.w400,
-                    ),
+                  Row(
+                    mainAxisAlignment: isUser
+                        ? MainAxisAlignment.end
+                        : MainAxisAlignment.start,
+                    children: [
+                      // 时间戳（左对齐或右对齐）
+                      Text(
+                        timeFormat.format(timestamp),
+                        style: TextStyle(
+                          fontSize: 10,
+                          color: Theme.of(context).brightness == Brightness.dark
+                              ? Colors.grey[400]
+                              : Colors.grey[500],
+                          fontWeight: FontWeight.w400,
+                        ),
+                      ),
+                      const Spacer(),
+                      // AI标识（仅在AI消息时显示）
+                      if (!isUser)
+                        Padding(
+                          padding: const EdgeInsets.only(left: 8),
+                          child: Text(
+                            "由AI生成".tr,
+                            style: TextStyle(
+                              fontSize: 8,
+                              color: Colors.blue[600],
+                              fontWeight: FontWeight.bold,
+                              fontStyle: FontStyle.italic,
+                            ),
+                          ),
+                        ),
+                    ],
                   ),
               ],
             ),
           ),
-          //const SizedBox(width: 8),
-          //if (isUser) _buildAvatar(isUser, context),
         ],
       ),
     );
@@ -125,65 +144,6 @@ class MessageBubble extends GetView<AgentController> {
     }
   }
 
-  /// 构建头像
-  // Widget _buildAvatar(bool isUser, BuildContext context) {
-  //   if (isUser) {
-  //     final storage = GetStorage();
-  //     final localAvatarPath = storage.read<String>('local_avatar') ?? '';
-
-  //     return Container(
-  //       width: 36,
-  //       height: 36,
-  //       decoration: BoxDecoration(
-  //         color: localAvatarPath.isEmpty ? Colors.grey[300] : null,
-  //         borderRadius: BorderRadius.circular(18),
-  //         boxShadow: [
-  //           BoxShadow(
-  //             color: Colors.black.withOpacity(0.05),
-  //             blurRadius: 2,
-  //             offset: const Offset(0, 1),
-  //           ),
-  //         ],
-  //       ),
-  //       child: localAvatarPath.isNotEmpty
-  //           ? ClipRRect(
-  //               borderRadius: BorderRadius.circular(18),
-  //               child: Image.file(
-  //                 File(localAvatarPath),
-  //                 fit: BoxFit.cover,
-  //               ),
-  //             )
-  //           : Icon(
-  //               Icons.person,
-  //               color: Colors.grey[700],
-  //               size: 20,
-  //             ),
-  //     );
-  //   } else {
-  //     // AI头像保持不变
-  //     return Container(
-  //       width: 36,
-  //       height: 36,
-  //       decoration: BoxDecoration(
-  //         color: Theme.of(context).primaryColor,
-  //         borderRadius: BorderRadius.circular(18),
-  //         boxShadow: [
-  //           BoxShadow(
-  //             color: Colors.black.withOpacity(0.05),
-  //             blurRadius: 2,
-  //             offset: const Offset(0, 1),
-  //           ),
-  //         ],
-  //       ),
-  //       child: Icon(
-  //         Icons.smart_toy_outlined,
-  //         color: Colors.white,
-  //         size: 20,
-  //       ),
-  //     );
-  //   }
-  // }
-
   /// 构建消息内容
   Widget _buildMessageContent(BuildContext context) {
     // 如果是识别中的消息，添加特殊样式