diff --git a/common/js/ai-service.js b/common/js/ai-service.js
index 7ebc9f6..4b68cea 100644
--- a/common/js/ai-service.js
+++ b/common/js/ai-service.js
@@ -914,8 +914,12 @@ export default {
    */
   async clearConversation(conversationId) {
     try {
+      // PR-AI-CLEAR-CONV-FIX (2026-09-19): URL 必须用 camelCase
+      //   ThinkPHP 后端方法名 = clearConversation, URL 不做 kebab→camel 转换
+      //   之前 'clear-conversation' 拼出 /api/kefu/clear-conversation → 404 method not exists
+      //   改 'clearConversation' → /api/kefu/clearConversation → 200
       const response = await http.sendRequest({
-        url: resolveApiUrl('clear-conversation'),
+        url: resolveApiUrl('clearConversation'),
         data: {
           agent_id: getAgentId(),
           conversation_id: conversationId,
@@ -958,11 +962,16 @@ export default {
     return true;
     // #endif
     // #ifdef H5
-    // PR-ELICIT-RESPONSE-HTTP (2026-09-18): H5 端改 fetch POST 新端点
-    //   后端 InitRoute 已注册 /aiagent/api/chat/elicit-response 和 /aikefu/api/chat/elicit-response
-    //   复用 resolveApiUrl 走 agent_id 路由,与 chat/info 等接口一致
+    // PR-ELICIT-RESPONSE-HTTP (2026-09-18, 修 2026-09-19): H5 端改 fetch POST 新端点
+    //   后端 InitRoute 注册的是 addon 模式 URL /{addon}/api/chat/elicit-response
+    //   (aikefu/api/... 或 aiagent/api/...),不能用 resolveApiUrl 因为它走 /api/{short}/...
+    //   会拆出 module=api, controller=kefu/aiagent, action=chat → 命中 chat() 而非 elicitResponse()
+    //   (PR-WB-MP-MEDIA 注释里记录的同款 thinkphp 路由陷阱)
+    //   必须用 resolveAddonName() 拿 addon 全名直接拼 URL
     try {
-      const resp = await fetch(Config.baseUrl + resolveApiUrl('chat/elicit-response'), {
+      const addon = resolveAddonName(currentAgentId);  // aikefu / aiagent
+      const url = Config.baseUrl + '/' + addon + '/api/chat/elicit-response';
+      const resp = await fetch(url, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',
@@ -1132,20 +1141,37 @@ 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)
+   *
+   * PR-AGENT-LIFECYCLE-CLEANUP (2026-09-19): agent 真的"变了"(从 A → B) 时
+   *   主动清当前会话 ID 缓存, 不展示陈旧会话 → "无痛苦无疑惑"
+   *   - 后端 L2 会兜底: 老 agent 被删 → 静默开新会话 (前端什么都不用做也对)
+   *   - 但前端主动清更安全: 即便后端没回 404, 用户也不看到"我换 agent 了为什么还是上次的对话"
+   *
    * @param {string} agentId
+   * @param {object} opts { silent: bool } true = 不回调, 默认 false
    */
-  setAgentId(agentId) {
+  setAgentId(agentId, opts) {
+    var oldAgentId = currentAgentId;
     var oldAddon = resolveAddonName(currentAgentId);
     setAgentId(agentId);
     var newAddon = resolveAddonName(currentAgentId);
     if (oldAddon !== newAddon) {
       try { disconnectWebSocket(); } catch (e) { /* ignore */ }
     }
-    // 切 agent 后恢复该 agent 的会话 ID (per-agent 隔离)
+    // PR-AGENT-LIFECYCLE-CLEANUP: agent 字符串真变化 (A → B) → 清 conv_id 缓存
+    //   不变化 (aikefu → aikefu 同 string) → 保留缓存, 让用户继续之前的多轮对话
+    var agentChanged = oldAgentId && oldAgentId !== agentId;
     currentConversationId = null;
     try {
       const saved = uni.getStorageSync(getConversationKey(currentAgentId));
-      if (saved) currentConversationId = saved;
+      if (saved && !agentChanged) currentConversationId = saved;
+      else if (saved && agentChanged) {
+        // agent 变了, 把老 agent 的 conv_id 也清掉, 避免老 user 换个 product page 又用回
+        try {
+          const oldKey = getConversationKey(oldAgentId);
+          if (oldKey) uni.removeStorageSync(oldKey);
+        } catch (e) {}
+      }
     } catch (e) { /* ignore */ }
   },