chore：微信小程序真机智能客服正常

common/js/ai-service.js

@@ -367,8 +367,10 @@ export default {
     try {
       await ensureWebSocketConnected();
     } catch (e) {
-      if (onComplete) onComplete({ error: e.message });
-      throw e;
+      // WebSocket 不可用（真机常见: socket 合法域名未配置 / 后端 WS 未部署）
+      // 自动降级为 HTTP 阻塞式请求, 复用与 H5 相同的后端接口
+      console.warn('[AI Service] MP WebSocket 不可用，降级为 HTTP blocking 请求:', e && e.message);
+      return this._fallbackToHttp(message, onChunk, onComplete);
     }
 
     wsMessageContent = '';
@@ -380,21 +382,52 @@ export default {
       wsMessageResolve = resolve;
       wsMessageReject = reject;
 
-      wsSocketTask.send({
-        data: JSON.stringify({
-          action: 'chat',
-          agent_id: getAgentId(),
-          uniacid: this.getUniacid(),
-          query: message,
-          user_id: getUserId(),
-          conversation_id: this.getConversationId() || '',
-          ...getDomainParams()
-        })
-      });
+      try {
+        wsSocketTask.send({
+          data: JSON.stringify({
+            action: 'chat',
+            agent_id: getAgentId(),
+            uniacid: this.getUniacid(),
+            query: message,
+            user_id: getUserId(),
+            conversation_id: this.getConversationId() || '',
+            ...getDomainParams()
+          })
+        });
+      } catch (sendErr) {
+        console.warn('[AI Service] MP WebSocket send 失败，降级为 HTTP blocking 请求:', sendErr && sendErr.message);
+        // 用降级结果决定该 promise 的最终状态, 避免同时弹出错误气泡
+        this._fallbackToHttp(message, onChunk, onComplete)
+          .then((res) => resolve(res))
+          .catch((err) => reject(err));
+      }
     });
     // #endif
   },
 
+  /**
+   * [MP 降级] WebSocket 不可用时, 改用 HTTP 阻塞式请求完成一次完整回复
+   * 只要「request 合法域名」已配置即可工作, 不依赖 socket 合法域名
+   */
+  async _fallbackToHttp(message, onChunk, onComplete) {
+    try {
+      const result = await this.sendMessage(message);
+      const content = result && result.content ? result.content : '';
+      if (content) {
+        if (onChunk) onChunk(content);
+        if (onComplete) onComplete({ content, conversation_id: result.conversationId });
+        return { content, conversation_id: result.conversationId };
+      }
+      const emptyErr = new Error(lang.lang('aiService.serviceUnavailable'));
+      if (onComplete) onComplete({ error: emptyErr.message });
+      throw emptyErr;
+    } catch (err) {
+      console.error('[AI Service] MP HTTP 降级请求也失败:', err);
+      if (onComplete) onComplete({ error: (err && err.message) || lang.lang('aiService.serviceUnavailable') });
+      throw err;
+    }
+  },
+
   /**
    * HTTP 流式请求（仅 H5 使用）
    * PR-7: URL 按 agent_id 路由