feat: add semantic WeChat session actions

chat-intent-router.test.mjs

@@ -425,6 +425,25 @@ test('classifyWithRules bypasses llm router when user selected summarize skill',
   assert.equal(llmCalls.length, 0);
 });
 
+test('chat intent router classifies ambiguous WeChat session actions semantically', async () => {
+  const router = createChatIntentRouter({
+    enabled: true,
+    timeoutMs: 500,
+    llmProviderService: {
+      async createChatCompletion({ messages }) {
+        assert.match(messages[0].content, /微信聊天会话动作分类器/);
+        return {
+          ok: true,
+          reply: '{"action":"reset","confidence":0.91,"reason":"用户要求换一种对话上下文"}',
+        };
+      },
+    },
+  });
+  const result = await router.classifySessionAction({ text: '我们换个思路聊' });
+  assert.equal(result.action, 'reset');
+  assert.equal(result.confidence, 0.91);
+});
+
 test('classifyWithRules bypasses llm router for explicit web skill prompt', async () => {
   const llmCalls = [];
   const router = createChatIntentRouter({