feat(wechat): add Intent Transaction Layer with unified task schema

Introduce Draft → Confirm → Commit flow for WeChat schedule intents behind
feature flags, plus h5_tasks dual-write/read aggregation and rollout scripts
so reminders and automations get explicit user confirmation before persisting.

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

scheduled-task-intent.test.mjs

@@ -105,6 +105,23 @@ test('meta scheduled-task phrases require task_spec clarification', () => {
   }
 });
 
+test('parse cancel daily news task as manage action', () => {
+  const intent = parseScheduledTaskIntent('取消每日新闻任务');
+  assert.equal(intent.action, 'cancel_scheduled_task');
+});
+
+test('parse daily external send automation', () => {
+  const intent = parseScheduledTaskIntent('每天自动给客户发送报价单');
+  assert.equal(intent.action, 'create_scheduled_task');
+  assert.match(intent.taskSpec ?? '', /报价/u);
+});
+
+test('parse daily monitoring automation', () => {
+  const intent = parseScheduledTaskIntent('帮我每天看看有没有新的招聘信息');
+  assert.equal(intent.action, 'create_scheduled_task');
+  assert.match(intent.taskSpec ?? '', /招聘/u);
+});
+
 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);