fix(wechat): guard ambiguous memory recall and scheduled task execution

Skip memory injection for short filler messages, demote page-workflow memory
pollution, keep scheduled automation off page.generate, and fail scheduled
tasks that only return clarification instead of deliverables.

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

chat-intent-router.test.mjs

@@ -31,6 +31,7 @@ import {
   resolveChatIntentRouterPolicy,
   mergeAgentMemoryCandidates,
   scoreAgentMemoryCandidate,
+  shouldSkipAmbiguousMemoryQuery,
 } from './chat-intent-router.mjs';
 
 /** Ambiguous user text that should miss FAQ/rules and exercise LLM router paths in tests. */
@@ -1398,6 +1399,66 @@ test('scoreAgentMemoryCandidate boosts episodic matches when topic overlap exist
   assert.ok(episodicScore > personalScore);
 });
 
+test('shouldSkipAmbiguousMemoryQuery skips filler without topic anchor', () => {
+  assert.equal(shouldSkipAmbiguousMemoryQuery('可以'), true);
+  assert.equal(shouldSkipAmbiguousMemoryQuery('我们继续聊聊德川家康'), false);
+  assert.equal(shouldSkipAmbiguousMemoryQuery('9岁小孩教育'), false);
+  assert.equal(shouldSkipAmbiguousMemoryQuery('你记得我们聊过什么吗'), false);
+});
+
+test('agent memory skips resolve for ambiguous short filler', async () => {
+  const calls = [];
+  const router = createChatIntentRouter({
+    env: {
+      MEMORY_AGENT_RESOLVE_ENABLED: '1',
+      MEMORY_AGENT_INJECTION_MODE: 'active',
+    },
+    memoryV2: {
+      async resolve(input) {
+        calls.push(input);
+        return { memories: [{ label: 'preference', text: '每日新闻页面偏好' }] };
+      },
+    },
+  });
+
+  const result = await router.resolveAgentMemoryContext({
+    userId: 'user-tang',
+    text: '可以',
+  });
+
+  assert.equal(result.skipped, true);
+  assert.equal(result.reason, 'ambiguous_query_skip');
+  assert.equal(result.memories.length, 0);
+  assert.equal(calls.length, 0);
+});
+
+test('agent memory merge demotes page workflow memories when query is general chat', () => {
+  const merged = mergeAgentMemoryCandidates({
+    query: '9岁小孩教育，孩子玩手机超时怎么办',
+    limit: 2,
+    personalMemories: [
+      { id: 'personal:news', label: 'preference', text: '用户希望整理每日新闻并做成页面发布' },
+      { id: 'personal:kid', label: 'experience', text: '用户关心9岁孩子教育与手机使用边界' },
+    ],
+  });
+
+  assert.equal(merged[0].id, 'personal:kid');
+});
+
+test('scoreAgentMemoryCandidate penalizes page workflow memories on general chat', () => {
+  const pageScore = scoreAgentMemoryCandidate({
+    id: 'personal:news',
+    label: 'preference',
+    text: '用户希望整理每日新闻并做成页面发布',
+  }, '可以，我们继续聊孩子教育');
+  const topicScore = scoreAgentMemoryCandidate({
+    id: 'personal:kid',
+    label: 'experience',
+    text: '用户关心9岁孩子教育与手机使用边界',
+  }, '可以，我们继续聊孩子教育');
+  assert.ok(topicScore > pageScore);
+});
+
 test('active agent memory context is hidden from displayText but available to orchestration envelope', () => {
   const enriched = applyAgentOrchestrationToUserMessage(
     {