feat: add semantic WeChat session actions

wechat-mp.mjs

@@ -29,6 +29,10 @@ import {
   shouldHandleSyncReply,
 } from './wechat/handlers/sync-replies.mjs';
 import { classifyWechatIntent } from './wechat/intent/classifier.mjs';
+import {
+  isWechatSessionResetAction,
+  resolveWechatSessionAction,
+} from './wechat/intent/session-action.mjs';
 import { isPageGenerateText, isTopicResetText } from './wechat/intent/patterns.mjs';
 import { isPageDataIntent } from './chat-skills.mjs';
 import { resolvePageGenerateOutcome } from './wechat/handlers/page-generate.mjs';
@@ -1086,6 +1090,7 @@ function isTopicResetIntent(text) {
 export function shouldForceNewWechatAgentSession(wechatIntent, resetCandidate) {
   return (
     wechatIntent?.kind === 'session.reset' ||
+    isWechatSessionResetAction(wechatIntent?.sessionActionResult) ||
     isTopicResetIntent(resetCandidate) ||
     isPageDataIntent(resetCandidate)
   );
@@ -1578,6 +1583,7 @@ export function createWechatMpService({
   onPageGenerated = null,
   applySessionLlmProvider = null,
   refreshSessionSnapshot = null,
+  sessionIntentClassifier = null,
   pageDataFinishGuard = null,
   wechatFetch = undiciFetch,
   linkExists = defaultPublicHtmlLinkExists,
@@ -2354,7 +2360,7 @@ export function createWechatMpService({
   };
 
   const runIntentMessage = async ({ inbound, intent, user }) => {
-    const wechatIntent = classifyWechatIntent(intent);
+    const wechatIntent = await resolveWechatIntent(intent);
     const mediaAnalysisEnabled = isWechatMediaGrayUser(user, config.mediaAnalysisGrayUsers);
     const reliabilityEnabled = isWechatMediaGrayUser(user, config.reliabilityGrayUsers);
     const agentReplyTimeoutMs = reliabilityEnabled ? config.agentReplyTimeoutMs : 0;
@@ -2810,6 +2816,23 @@ export function createWechatMpService({
     }
   };
 
+  const resolveWechatIntent = async (intent) => {
+    const wechatIntent = classifyWechatIntent(intent);
+    if (intent.msgType !== 'text' && intent.msgType !== 'voice') return wechatIntent;
+    const sessionActionResult = await resolveWechatSessionAction(intent.agentText, {
+      semanticClassifier: sessionIntentClassifier,
+      logger,
+    });
+    if (isWechatSessionResetAction(sessionActionResult)) {
+      intent.sessionAction = sessionActionResult.action;
+      return { ...wechatIntent, kind: 'session.reset', sessionActionResult };
+    }
+    if (sessionActionResult.action === 'ignore_previous') {
+      intent.sessionAction = sessionActionResult.action;
+    }
+    return { ...wechatIntent, sessionActionResult };
+  };
+
   const handleInboundMessage = async (bodyText, query = {}) => {
     if (!verifyRequest(query)) {
       return { ok: false, status: 403, body: 'invalid signature' };