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 {