feat(ai): PR-7 前端 ai-service 按 agent_id 路由 endpoint

背景:
- 后端 aikefu 和 ai-agent 两个独立 addon (PR-6 v2.0)
- 前端 ai-chat 之前所有 API endpoint 都 hardcode 到 /api/kefu/* + /ws/aikefu
- 5 个 agent (智能客服默认 + 4 个 AI智能体) 实际上无法被前端独立路由

改动:
- 新增 resolveAddonName(agentId) -> 'aikefu' / 'aiagent'
- 新增 resolveApiUrl(apiName) -> '/api/kefu/X' / '/api/aiagent/X'
- 新增 resolveWsPath() -> '/ws/aikefu' / '/ws/aiagent'

- 全量替换 sendMessage / sendHttpStream / sendStreamMessage / generateConversationId /
  getServiceStatus / getServiceConfig / clearConversation / getConversationHistory /
  chatWithEventSource / WebSocket connect URL:
  全部用 resolveApiUrl / resolveWsPath 动态计算

- setAgentId 跨 addon 切换时自动 disconnectWebSocket (路径变了)
- 新增 getAddonName() / getApiPrefix() 测试辅助方法

后端配套 PR-8+9:
- /api/aiagent/api/Chat/chat (HTTP, 含流式 SSE)
- /api/aiagent/api/Chat/{info,health,getHistory,clearConversation,createConversation}
- /ws/aiagent WebSocket 端点 (从 aikefu WebSocket 复制改名)

路由规则:
- agent_aikefu -> aikefu addon (老路径, 默认智能客服)
- 其他 agent (knowledge / quick_reply / sales / hr) -> aiagent addon (新路径)

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

common/js/ai-service.js

@@ -8,11 +8,52 @@ let currentConversationId = null;
 // ====== AI Agent Generalization (customer service is the first agent) ======
 // setAgentId updates currentAgentId; default is agent_aikefu.
 // Any sendMessage / sendStreamMessage / getServiceConfig call passes agent_id automatically.
+//
+// PR-7: 按 agent_id 路由 endpoint
+//   - agent_aikefu (默认智能客服) -> 走 aikefu addon (/api/kefu/* + /ws/aikefu)
+//   - 其他 agent (knowledge / quick_reply / sales / hr) -> 走 ai-agent addon (/api/aiagent/* + /ws/aiagent)
+//   - 前端不关心后端两个 addon 之间的差异,只关心 agent_id 路由
 
 export const DEFAULT_AGENT_ID = 'agent_aikefu';
 let currentAgentId = DEFAULT_AGENT_ID;
 export const CONVERSATION_KEY = 'ai_conversation_id';
 
+/**
+ * PR-7: agent_id -> 后端 addon 路由映射
+ *
+ * 规则:
+ *   - agent_aikefu (默认智能客服) -> aikefu addon (老路径 /api/kefu/*)
+ *   - 其他 agent -> aiagent addon (新路径 /api/aiagent/*)
+ *
+ * 后端两个 addon 完全独立:
+ *   - aikefu: lucky_aikefu_config / conversation / message
+ *   - aiagent: lucky_ai_agent_config / conversation / message
+ */
+function resolveAddonName(agentId) {
+  if (!agentId || agentId === 'agent_aikefu') return 'aikefu';
+  return 'aiagent';
+}
+
+/**
+ * PR-7: agent_id -> API endpoint URL
+ *   agent_aikefu -> '/api/kefu/...'  (兼容老路径)
+ *   其他         -> '/api/aiagent/...'  (ai-agent 新路径)
+ */
+function resolveApiUrl(apiName) {
+  var addon = resolveAddonName(currentAgentId);
+  if (addon === 'aikefu') {
+    return '/api/kefu/' + apiName;
+  }
+  return '/api/aiagent/' + apiName;
+}
+
+/**
+ * PR-7: WebSocket URL 路径(/ws/{addonName})
+ */
+function resolveWsPath() {
+  return '/ws/' + resolveAddonName(currentAgentId);
+}
+
 /**
  * 获取域名配置参数（避免重复代码）
  */
@@ -42,12 +83,12 @@ const GUEST_ID_KEY = 'ai_guest_user_id';
 function getUserId() {
   const memberId = store.state.memberInfo?.id;
   if (memberId) return memberId;
-  
+
   let guestId;
   try {
     guestId = uni.getStorageSync(GUEST_ID_KEY);
   } catch (e) { /* ignore */ }
-  
+
   if (!guestId) {
     guestId = 'guest_' + Date.now() + '_' + Math.random().toString(36).slice(2, 10);
     try {
@@ -112,7 +153,9 @@ function ensureWebSocketConnected() {
       return;
     }
 
-    var wssUrl = 'wss://' + domain + '/ws/aikefu';
+    // PR-7: WebSocket 路径按当前 agent_id 路由 — agent_aikefu 走 /ws/aikefu,其他走 /ws/aiagent
+    var wsPath = resolveWsPath();
+    var wssUrl = 'wss://' + domain + wsPath;
     wsConnected = false;
     wsAuthenticated = false;
     wsSocketTask = wx.connectSocket({ url: wssUrl, header: {} });
@@ -255,20 +298,35 @@ export default {
     return uni.getStorageSync('uniacid') || Config.uniacid; // 从缓存中获取uniacid，或使用默认uniacid
   },
 
+  /**
+   * PR-7: 获取当前 agent 对应的 addon 名称 (aikefu / aiagent)
+   */
+  getAddonName() {
+    return resolveAddonName(currentAgentId);
+  },
+
+  /**
+   * PR-7: 获取当前 agent 对应的 API endpoint 前缀
+   */
+  getApiPrefix() {
+    return resolveAddonName(currentAgentId) === 'aikefu' ? '/api/kefu' : '/api/aiagent';
+  },
+
   /**
    * 发送普通消息（blocking 模式）
+   * PR-7: URL 按 agent_id 路由
    */
   async sendMessage(message, options = {}) {
     try {
       const params = {
-        url: '/api/kefu/chat',
+        url: resolveApiUrl('chat'),
         data: {
           agent_id: getAgentId(),
           user_id: getUserId(),
           stream: false,
           inputs: {},
           query: message,
-          response_mode: 'blocking', // 强制 blocking
+          response_mode: 'blocking',
           user: getUserId(),
           conversation_id: this.getConversationId() || '',
           ...getDomainParams()
@@ -291,7 +349,6 @@ export default {
     } catch (error) {
       console.error('[AI Service] AiChat API请求失败，详细错误:', error);
       console.error('[AI Service] 错误堆栈:', error.stack);
-      // 打印更多信息帮助调试
       console.error('[AI Service] store 状态:', {
         memberInfo: store.state.memberInfo,
         uniacid: this.getUniacid(),
@@ -307,7 +364,6 @@ export default {
    */
   async sendStreamMessage(message, onChunk, onComplete) {
     // #ifdef MP
-    // 先确保连接已就绪
     try {
       await ensureWebSocketConnected();
     } catch (e) {
@@ -315,7 +371,6 @@ export default {
       throw e;
     }
 
-    // 设置当前消息回调
     wsMessageContent = '';
     wsMessageActive = true;
     wsMessageOnChunk = onChunk || null;
@@ -339,13 +394,16 @@ export default {
     });
     // #endif
   },
+
   /**
    * HTTP 流式请求（仅 H5 使用）
+   * PR-7: URL 按 agent_id 路由
    */
   async sendHttpStream(message, onChunk, onComplete) {
     // #ifdef H5
     try {
-      const url = Config.baseUrl + `/api/kefu/chat`;
+      var chatUrl = resolveApiUrl('chat');
+      var url = Config.baseUrl + chatUrl;
       const response = await fetch(url, {
         method: 'POST',
         headers: {
@@ -358,6 +416,7 @@ export default {
           inputs: {},
           query: message,
           response_mode: 'streaming',
+          agent_id: getAgentId(),
           user_id: getUserId(),
           conversation_id: this.getConversationId() || '',
           ...getDomainParams()
@@ -380,9 +439,8 @@ export default {
 
         buffer += decoder.decode(value, { stream: true });
 
-        // 按行分割，保留不完整的最后一行
         const lines = buffer.split('\n');
-        buffer = lines.pop() || ''; // 未完成的行留到下次
+        buffer = lines.pop() || '';
 
         for (const line of lines) {
           const trimmed = line.trim();
@@ -393,14 +451,12 @@ export default {
                 const data = JSON.parse(jsonStr);
                 if (data.event === 'message') {
                   var text = data.answer || data.text || '';
-                  // 兼容嵌套 data.data 格式
                   if (!text && data.data) {
                     text = data.data.content || data.data.answer || '';
                   }
                   content += text;
                   if (onChunk) onChunk(text);
                 }
-                // 兼容两种层级：conversation_id 可能在顶层或 data.data 中
                 var cid = data.conversation_id || (data.data && data.data.conversation_id) || '';
                 if (cid) {
                   conversationId = cid;
@@ -416,7 +472,6 @@ export default {
         }
       }
 
-      // 处理最后残留的 buffer（如果有）
       if (buffer.trim().startsWith('data:')) {
         try {
           const jsonStr = buffer.trim().slice(5);
@@ -503,10 +558,11 @@ export default {
 
   /**
    * 生成新会话（如需）
+   * PR-7: URL 按 agent_id 路由
    */
   async generateConversationId() {
     const params = {
-      url: '/api/kefu/createConversation',
+      url: resolveApiUrl('createConversation'),
       data: {
         agent_id: getAgentId(),
         uniacid: this.getUniacid(),
@@ -528,11 +584,12 @@ export default {
 
   /**
    * 获取服务状态
+   * PR-7: URL 按 agent_id 路由
    */
   async getServiceStatus() {
     try {
       const response = await http.sendRequest({
-        url: '/api/kefu/health',
+        url: resolveApiUrl('health'),
         async: false,
         data: {}
       });
@@ -552,11 +609,12 @@ export default {
 
   /**
    * 获取服务配置信息
+   * PR-7: URL 按 agent_id 路由
    */
   async getServiceConfig() {
     try {
       const params = {
-        url: '/api/kefu/info',
+        url: resolveApiUrl('info'),
         data: {
           agent_id: getAgentId(),
           uniacid: this.getUniacid(),
@@ -568,7 +626,7 @@ export default {
         header: {
           'Content-Type': 'application/json'
         }
-      };      
+      };
       const response = await http.sendRequest({
         ...params,
         async: false,
@@ -583,11 +641,12 @@ export default {
 
   /**
    * 清除会话历史（调用后端接口）
+   * PR-7: URL 按 agent_id 路由
    */
   async clearConversation(conversationId) {
     try {
       const response = await http.sendRequest({
-        url: '/api/kefu/clear-conversation',
+        url: resolveApiUrl('clear-conversation'),
         data: {
           agent_id: getAgentId(),
           conversation_id: conversationId,
@@ -604,6 +663,7 @@ export default {
 
   /**
    * 获取会话历史
+   * PR-7: URL 按 agent_id 路由
    */
   async getConversationHistory(params = {}) {
     try {
@@ -623,7 +683,7 @@ export default {
         ...getDomainParams()
       };
       const response = await http.sendRequest({
-        url: '/api/kefu/getHistory',
+        url: resolveApiUrl('getHistory'),
         data: requestData,
         header: {
           'Content-Type': 'application/json'
@@ -653,6 +713,7 @@ export default {
 
   /**
    * [H5 Only] EventSource 流式聊天（备用）
+   * PR-7: URL 按 agent_id 路由
    */
   chatWithEventSource(message, conversationId = '', onMessage, onComplete, onError) {
     // #ifdef H5
@@ -671,7 +732,8 @@ export default {
       ...getDomainParams()
     };
     const params = new URLSearchParams(paramsObj);
-    const url = `${Config.baseUrl}/api/kefu/chat?${params.toString()}`;
+    var chatUrl = resolveApiUrl('chat');
+    const url = `${Config.baseUrl}${chatUrl}?${params.toString()}`;
     try {
       const eventSource = new EventSource(url);
       window.currentEventSource = eventSource;
@@ -716,7 +778,6 @@ export default {
    */
   async chatWithFetchStream(message, conversationId = '', onMessage, onComplete, onError) {
     // #ifdef H5
-    // 实际逻辑已在 sendHttpStream 中实现，此处可复用或留空
     return this.sendHttpStream(message, onMessage, (res) => {
       onComplete?.({ message: res.content, conversation_id: res.conversation_id });
     });
@@ -743,10 +804,16 @@ export default {
 
   /**
    * Set current AI Agent (default aikefu; link system passes agent_id).
+   * PR-7: 切换 agent 时, 如果跨 addon 则断开 WebSocket 重连 (路径变了)
    * @param {string} agentId
    */
   setAgentId(agentId) {
+    var oldAddon = resolveAddonName(currentAgentId);
     setAgentId(agentId);
+    var newAddon = resolveAddonName(currentAgentId);
+    if (oldAddon !== newAddon) {
+      try { disconnectWebSocket(); } catch (e) { /* ignore */ }
+    }
   },
 
   /**
@@ -756,4 +823,4 @@ export default {
   getAgentId() {
     return getAgentId();
   },
-};
+};