fix(wechat): guard bare page-continuation follow-ups from session loss and memory drift

Prevent chat-to-page flows like writing a poem then saying "做成页面吧" from opening a fresh session without carried content, failing with a vague error, or letting Memory page-template preferences replace the immediate topic. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-02 18:49:42 +08:00
parent 55100f8945
commit c7dcc5d002
5 changed files with 439 additions and 7 deletions
@@ -0,0 +1,78 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  extractLastSubstantiveAssistantFromConversation,
+  extractSubstantiveAssistantText,
+  filterMemoryForImmediatePageContext,
+  hasExplicitPageSourceReference,
+  isBareImmediatePageCreateRequest,
+  isWechatPageContinuationRepairableError,
+  resolveWechatPageContinuationSource,
+  shouldFailFastWechatPageContinuation,
+} from './intent/page-continuation-context.mjs';
+
+test('detects bare vs explicit page continuation phrasing', () => {
+  assert.equal(hasExplicitPageSourceReference('帮我把这首词做成页面'), true);
+  assert.equal(hasExplicitPageSourceReference('帮我吧以上内容做成页面'), true);
+  assert.equal(isBareImmediatePageCreateRequest('帮我做成页面吧'), true);
+  assert.equal(isBareImmediatePageCreateRequest('帮我把这首词做成页面'), false);
+  assert.equal(isBareImmediatePageCreateRequest('帮我做个页面'), false);
+});
+
+test('resolveWechatPageContinuationSource prefers carried session content', () => {
+  const poem = '《临江仙·秋思》'.padEnd(60, '词');
+  const resolved = resolveWechatPageContinuationSource({
+    userText: '帮我做成页面吧',
+    carriedSessionContent: poem,
+  });
+  assert.equal(resolved.ok, true);
+  assert.equal(resolved.source, 'carried_session');
+});
+
+test('shouldFailFastWechatPageContinuation blocks bare follow-up without source', () => {
+  assert.equal(
+    shouldFailFastWechatPageContinuation({
+      sessionPageContinuation: true,
+      userText: '帮我做成页面吧',
+    }),
+    true,
+  );
+  assert.equal(
+    shouldFailFastWechatPageContinuation({
+      sessionPageContinuation: true,
+      userText: '帮我做成页面吧',
+      sessionAssistantContent: '《临江仙·秋思》'.padEnd(60, '。'),
+    }),
+    false,
+  );
+});
+
+test('filterMemoryForImmediatePageContext removes page template preferences', () => {
+  const filtered = filterMemoryForImmediatePageContext([
+    { label: 'preference', text: '用户要求每日新闻页面固定格式' },
+    { label: 'fact', text: '用户名字是唐' },
+  ]);
+  assert.equal(filtered.length, 1);
+  assert.match(filtered[0].text, /唐/);
+});
+
+test('extractLastSubstantiveAssistantFromConversation skips short acknowledgements', () => {
+  const text = extractLastSubstantiveAssistantFromConversation([
+    { role: 'user', content: [{ type: 'text', text: '写首词' }] },
+    { role: 'assistant', content: [{ type: 'text', text: '好的，我来写。' }] },
+    {
+      role: 'assistant',
+      content: [{
+        type: 'text',
+        text: `《临江仙·秋思》${'昨夜西风凋碧树，独上高楼，望尽天涯路。'.repeat(3)}`,
+      }],
+    },
+  ]);
+  assert.match(text, /临江仙/);
+});
+
+test('isWechatPageContinuationRepairableError covers fake delivery markers', () => {
+  assert.equal(isWechatPageContinuationRepairableError('stale_session_poisoned_completion'), true);
+  assert.equal(isWechatPageContinuationRepairableError('unknown variant `image_url`'), false);
+});