feat: add semantic WeChat session actions

wechat/intent/classifier.mjs

@@ -6,6 +6,7 @@ import {
   isTopicResetText,
   wantsDocxDownload,
 } from './patterns.mjs';
+import { WECHAT_SESSION_ACTION } from './session-action.mjs';
 
 /**
  * @typedef {object} WechatPageGenerateIntent
@@ -15,6 +16,7 @@ import {
  *
  * @typedef {object} WechatSessionResetIntent
  * @property {'session.reset'} kind
+ * @property {string} sessionAction
  *
  * @typedef {object} WechatStatusProbeIntent
  * @property {'status.probe'} kind
@@ -46,7 +48,9 @@ export function classifyWechatIntent(intent) {
   const text = String(intent?.agentText ?? intent?.displayText ?? '').trim();
 
   if (msgType === 'text' || msgType === 'voice') {
-    if (isTopicResetText(text)) return { kind: 'session.reset' };
+    if (isTopicResetText(text)) {
+      return { kind: 'session.reset', sessionAction: WECHAT_SESSION_ACTION.RESET };
+    }
     if (STATUS_PROBE_PATTERN.test(text)) return { kind: 'status.probe' };
     if (GREETING_PATTERN.test(text.replace(/[!！。.\s]+$/g, ''))) return { kind: 'greeting' };
     if (CONNECTIVITY_TEST_PATTERN.test(text.replace(/[!！。.\s]+$/g, ''))) {