fix: broaden WeChat session page continuation phrasing

Recognize retry, HTML page, page edits, and poem content edits as session continuations so delivery skips fresh-thumbnail forcing and retains agent context for multi-turn page work.

Co-authored-by: Cursor <cursoragent@cursor.com>

wechat-mp.test.mjs

@@ -17,6 +17,8 @@ import {
   loadWechatMpConfig,
   maybeAttachPublishedHtmlLink,
   isWechatImmediateContextFollowup,
+  isWechatSessionPageContinuation,
+  shouldDeliverWechatHtmlArtifacts,
   isWechatPageDataTask,
   shouldRotateUnlinkedWechatRoute,
   shouldRetryHtmlGenerationReply,
@@ -29,6 +31,7 @@ import {
   WECHAT_CUSTOMER_TEXT_MAX_BYTES,
 } from './wechat-mp.mjs';
 import { createChatIntentRouter } from './chat-intent-router.mjs';
+import { classifyWechatIntent } from './wechat/intent/classifier.mjs';
 import { buildPageGenerateAgentPrompt, buildImmediateContextPageRepairPrompt } from './wechat/prompts/page-generate.mjs';
 import { resolveWechatImageGenerationPolicy, WECHAT_PAGE_THUMBNAIL_MODE } from './wechat/image-generation-policy.mjs';
 import {
@@ -365,6 +368,22 @@ test('WeChat immediate-context page guard does not match complete page requests'
   assert.doesNotMatch(ordinaryPrompt, /write_file 硬门槛/);
 });
 
+test('WeChat session page continuation covers retry, edit, and poem edits', () => {
+  const retry = classifyWechatIntent({ msgType: 'text', agentText: '重试上次页面' });
+  assert.equal(retry.kind, 'page.generate');
+  assert.equal(isWechatSessionPageContinuation(retry, '重试上次页面'), true);
+  const edit = classifyWechatIntent({ msgType: 'text', agentText: '把页面标题改成《七月清晨》' });
+  assert.equal(edit.kind, 'page.generate');
+  assert.equal(isWechatSessionPageContinuation(edit, edit.topic), true);
+  const poemEdit = classifyWechatIntent({ msgType: 'text', agentText: '把诗里第三段改长一点' });
+  assert.equal(poemEdit.kind, 'chat.general');
+  assert.equal(isWechatSessionPageContinuation(poemEdit, '把诗里第三段改长一点'), true);
+  assert.equal(
+    shouldDeliverWechatHtmlArtifacts(poemEdit, { agentText: '把诗里第三段改长一点' }),
+    true,
+  );
+});
+
 test('WeChat immediate-context page skips fresh thumbnail requirement', () => {
   const policy = resolveWechatImageGenerationPolicy({
     text: '把刚才的诗做成页面',