fix: IoT多设备支持 + Review Pipeline审查消息 + 意图分析快速通道优化

- IoT Provider: 重写Execute()支持多设备命令批量执行，修复persona路径
- Intent Analyzer: 新增isStrongIoTCommand快速通道，跳过LLM分析节省2-3s
- Orchestrator: parseReviewMessages()内联审查 + 快速通道扩展(chat/greeting跳过子会话)
- Gateway: SSE review_messages解析→WebSocket结构化消息转发(action/chat)
- Persona: 对话风格注入action格式指令(括号包裹动作描述)
- Frontend: sessionStore历史消息msgType映射
- 新增E2E测试脚本 + 调试标准文档 + 第4轮修复报告

E2E验证: IoT设备操控✅ Review消息拆分✅ 快速通道✅ 响应时间~3.4s

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/gateway/internal/handler/chat_handler.go

@@ -260,6 +260,8 @@ func (h *ChatHandler) streamResponse(client *ws.Client, mode string, reqBody []b
 				Index int    `json:"index"`
 				Text  string `json:"text"`
 			} `json:"segments,omitempty"`
+			// 审查后的结构化消息
+			ReviewMessages []ws.ReviewMessage `json:"review_messages,omitempty"`
 		}
 		if err := json.Unmarshal([]byte(data), &chunk); err != nil {
 			log.Printf("[chat] 解析 SSE delta 失败: %v, raw=%s", err, data)
@@ -289,6 +291,46 @@ func (h *ChatHandler) streamResponse(client *ws.Client, mode string, reqBody []b
 			break
 		}
 
+		// 处理审查后的结构化消息 (review)
+		if len(chunk.ReviewMessages) > 0 {
+			for i, rm := range chunk.ReviewMessages {
+				role := "assistant"
+				msgType := "chat"
+				if rm.Type == "action" {
+					role = "action"
+					msgType = "action"
+				}
+				reviewMsgID := fmt.Sprintf("%s_r%d", msgID, i)
+				// 持久化每条审查消息
+				if h.sessionStore != nil && h.sessionStore.IsAvailable() {
+					if err := h.sessionStore.AddMessage(client.SessionID, role, rm.Content); err != nil {
+						log.Printf("[chat] 持久化审查消息失败: %v", err)
+					}
+				}
+				h.hub.CacheMessage(client.UserID, client.SessionID, ws.Message{
+					ID:        reviewMsgID,
+					Role:      role,
+					Content:   rm.Content,
+					Timestamp: time.Now().UnixMilli(),
+				})
+				client.SendMessage(ws.ServerMessage{
+					Type:           "response",
+					MessageID:      reviewMsgID,
+					Content:        rm.Content,
+					Role:           role,
+					MsgType:        msgType,
+					SessionID:      client.SessionID,
+					Timestamp:      time.Now().UnixMilli(),
+				})
+				// 小延迟让消息逐条到达，更像真人
+				if i < len(chunk.ReviewMessages)-1 {
+					time.Sleep(200 * time.Millisecond)
+				}
+			}
+			fullText += "[review]"
+			continue
+		}
+
 		// 处理断句事件 (stream_segments)
 		if len(chunk.Segments) > 0 {
 			for _, seg := range chunk.Segments {

backend/gateway/internal/ws/hub.go

@@ -35,6 +35,7 @@ type Message struct {
 	ID          string               `json:"id"`
 	Role        string               `json:"role"`
 	Content     string               `json:"content"`
+	MsgType     string               `json:"msg_type,omitempty"`
 	Attachments []MessageAttachment  `json:"attachments,omitempty"`
 	Timestamp   int64                `json:"timestamp"`
 }

backend/gateway/internal/ws/protocol.go

@@ -23,9 +23,15 @@ type ClientMessage struct {
 	Timestamp   int64                `json:"timestamp"`
 }
 
+// ReviewMessage 审查后的结构化消息（动作/聊天分离）
+type ReviewMessage struct {
+	Type    string `json:"type"`    // "action" | "chat"
+	Content string `json:"content"`
+}
+
 // 服务端 → 客户端消息
 type ServerMessage struct {
-	Type           string               `json:"type"`          // response | segment | audio | error | device_update | pong | history_response | stream_chunk | stream_end | background_thinking | notification | multi_message | stream_segments
+	Type           string               `json:"type"`          // response | segment | audio | error | device_update | pong | history_response | stream_chunk | stream_end | background_thinking | notification | multi_message | stream_segments | review
 	MessageID      string               `json:"message_id"`
 	Text           string               `json:"text,omitempty"`
 	Content        string               `json:"content,omitempty"`     // stream_chunk 的增量文本
@@ -42,6 +48,8 @@ type ServerMessage struct {
 	ThinkingStatus string               `json:"thinking_status,omitempty"` // 后台思考状态
 	Notification   *NotificationInfo    `json:"notification,omitempty"`    // 通知推送
 	MultiMessage   *MultiMessagePayload `json:"multi_message,omitempty"`   // 多条消息批量发送
+	ReviewMessages []ReviewMessage      `json:"review_messages,omitempty"` // 审查后的结构化消息列表
+	MsgType        string               `json:"msg_type,omitempty"`        // 消息展示类型: action | chat
 }
 
 // MultiMessagePayload 多条消息的容器 (对应昔涟的多消息回复风格)