feat: AI 场景路由、ASR 服务及前后端全链路同步

- 新增 AI 场景路由控制器和管理接口
- 新增 ASR 语音识别服务及前后端集成
- 同步 AI Runtime 客户端到 Web/小程序/Life-Script
- 完善 AI 配置测试修复和管理后台路由配置
- 新增数据库迁移脚本

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

web/src/stores/chat.ts

@@ -469,6 +469,60 @@ export const useChatStore = defineStore('chat', () => {
     await processMessageQueue()
   }
 
+  const ensureStreamingAiMessage = async (wsMessage: WebSocketMessage) => {
+    const messageId = wsMessage.messageId || `ai-stream-${Date.now()}`
+    let message = messages.value.find(m => m.id === messageId)
+    if (!message) {
+      await processMessageQueue()
+      message = messages.value.find(m => m.id === messageId)
+    }
+    if (!message) {
+      addMessage({
+        id: messageId,
+        content: '',
+        type: 'ai',
+        conversationId: wsMessage.conversationId || currentSession.value?.id,
+        timestamp: wsMessage.createTime || new Date().toISOString()
+      })
+      await processMessageQueue()
+      message = messages.value.find(m => m.id === messageId)
+    }
+    return message
+  }
+
+  const handleAiStreamMessage = async (wsMessage: WebSocketMessage) => {
+    const message = await ensureStreamingAiMessage(wsMessage)
+    if (!message) return
+
+    if (wsMessage.type === 'AI_STREAM_START') {
+      isTyping.value = true
+      message.status = 'sending'
+      return
+    }
+
+    if (wsMessage.type === 'AI_STREAM_DELTA') {
+      isTyping.value = false
+      message.content += wsMessage.content || ''
+      message.status = 'sending'
+      return
+    }
+
+    if (wsMessage.type === 'AI_STREAM_DONE') {
+      isTyping.value = false
+      message.status = 'sent'
+      return
+    }
+
+    if (wsMessage.type === 'AI_STREAM_ERROR') {
+      isTyping.value = false
+      message.status = 'failed'
+      message.error = wsMessage.data?.message || wsMessage.content || 'AI服务暂时不可用'
+      if (!message.content) {
+        message.content = message.error
+      }
+    }
+  }
+
   // WebSocket消息处理 - 使用队列处理所有消息
   let handleWebSocketMessage = async (wsMessage: WebSocketMessage) => {
     console.log('收到WebSocket消息:', wsMessage.type, wsMessage.senderType, '消息ID:', wsMessage.messageId)
@@ -484,6 +538,14 @@ export const useChatStore = defineStore('chat', () => {
       case 'AI_THINKING':
         // AI正在思考 - 不修改响应式数据，避免竞态
         console.log('⏳ AI正在思考中...')
+        isTyping.value = true
+        break
+
+      case 'AI_STREAM_START':
+      case 'AI_STREAM_DELTA':
+      case 'AI_STREAM_DONE':
+      case 'AI_STREAM_ERROR':
+        await handleAiStreamMessage(wsMessage)
         break
 
       case 'CONNECTION':