fix(scheduled-task): reject meta-only phrases in taskSpec parsing

Treat hollow requests like「我要做一个定时执行任务」as missing taskSpec so
WeChat preflight asks for both schedule and executable content instead of
accepting「执行」as a deliverable task description.

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

scheduled-task-intent.mjs

@@ -25,6 +25,23 @@ const WEEKDAY_LABELS = [
   ['周六', '星期六'],
 ];
 
+const META_TASK_SPEC_PATTERNS = [
+  /^我要?(?:做|创建|设置|弄)?(?:一个|个)?(?:定时(?:自动)?)?执行(?:任务)?$/u,
+  /^帮我?(?:做|创建|设置|弄)?(?:一个|个)?(?:定时(?:自动)?)?执行(?:任务)?$/u,
+  /^请?(?:帮我)?(?:做|创建|设置|弄)?(?:一个|个)?(?:定时(?:自动)?)?执行(?:任务)?$/u,
+  /^定时(?:自动)?执行(?:任务)?$/u,
+  /^执行(?:任务)?$/u,
+  /^做(?:一个|个)?(?:定时(?:自动)?)?(?:执行)?任务$/u,
+  /^创建(?:一个|个)?定时(?:自动)?执行(?:任务)?$/u,
+  /^想(?:要)?(?:做|创建|设置)?(?:一个|个)?(?:定时(?:自动)?)?执行(?:任务)?$/u,
+];
+
+function isMetaScheduledTaskSpec(spec) {
+  const normalized = String(spec ?? '').replace(/\s+/g, '').trim();
+  if (!normalized) return true;
+  return META_TASK_SPEC_PATTERNS.some((pattern) => pattern.test(normalized));
+}
+
 function wantsScheduledTaskAutomation(compact) {
   if (SCHEDULE_MARKERS.test(compact)) return true;
   if (!RECURRENCE_MARKERS.test(compact)) return false;
@@ -48,6 +65,7 @@ function extractScheduledTaskSpec(text) {
   const original = String(text ?? '').trim();
   if (!original) return null;
   let spec = original
+    .replace(/^(?:不是|别是|并非)(?:待办|代办|提醒|日程|闹钟)[，,、:：\s]*/u, '')
     .replace(
       /^(?:帮我)?(?:设|设置|创建|添加|想创建)(?:一个|个)?(?:定时(?:自动)?任务|定时执行任务)?[:：,，、\s]*/u,
       '',
@@ -62,9 +80,12 @@ function extractScheduledTaskSpec(text) {
     )
     .replace(/(?:周[一二三四五六日天]|星期[一二三四五六日天])/gu, ' ')
     .replace(/(?:帮我|请|麻烦)/gu, ' ')
+    .replace(/^执行[，,、:：\s]+/u, '')
+    .replace(/[，,、:：\s]+执行$/u, '')
     .replace(/\s+/g, ' ')
     .trim();
   if (!spec || spec.length < 3) return null;
+  if (isMetaScheduledTaskSpec(spec)) return null;
   if (!EXECUTE_VERBS.test(spec.replace(/\s+/g, ''))) return null;
   return spec;
 }
@@ -302,6 +323,7 @@ export function formatScheduledTaskListReply(tasks = []) {
 
 export {
   extractScheduledTaskSpec,
+  isMetaScheduledTaskSpec,
   parseWeekday,
   resolveOnceRunAtLocal,
 };

scheduled-task-intent.test.mjs

@@ -90,3 +90,24 @@ test('isScheduledTaskIntent excludes none', () => {
   assert.equal(isScheduledTaskIntent({ action: 'create_scheduled_task' }), true);
   assert.equal(isScheduledTaskIntent({ action: 'none' }), false);
 });
+
+test('meta scheduled-task phrases require task_spec clarification', () => {
+  for (const text of [
+    '我要做一个定时执行任务',
+    '定时自动执行任务',
+    '不是待办，定时执行任务',
+  ]) {
+    const intent = parseScheduledTaskIntent(text);
+    assert.equal(intent.action, 'create_scheduled_task', text);
+    assert.ok(intent.needsClarification?.includes('task_spec'), text);
+    assert.ok(intent.needsClarification?.includes('schedule'), text);
+    assert.equal(extractScheduledTaskSpec(text), null, text);
+  }
+});
+
+test('combined phrase keeps substantive taskSpec after time prefix', () => {
+  const text = '帮我创建一个定时执行任务，23：00执行，搜索今日新闻';
+  const intent = parseScheduledTaskIntent(text);
+  assert.equal(intent.needsClarification, undefined);
+  assert.match(intent.taskSpec, /搜索今日新闻/u);
+});