fix(schedule): reconcile cron stack layer

packages/schedule/tool-schedule/tests/cron.spec.ts

@@ -367,7 +367,6 @@ describe('durable Cron replay', () => {
       scheduleId: 'schedule-cron',
       prompt: 'daily review',
       occurrenceAt: '2026-08-08T01:00:00.000Z',
-      deliveryMode: 'session-local',
     })
   })
 

packages/schedule/tool-schedule/tests/tools.spec.ts

@@ -650,17 +650,6 @@ describe('Schedule tool protocol', () => {
     expect(test.agent.session.events.filter(event => event.type === 'schedule/change')).toEqual([])
   })
 
-  it('rejects an empty or padded delete id before persistence', async () => {
-    const test = await harness()
-    for (const id of ['', ' schedule-1']) {
-      expect(value(await execute(test, 'schedule_delete', { id }))).toEqual({
-        code: 'invalid_rule',
-        message: 'schedule_delete id must be non-empty without surrounding whitespace.',
-      })
-    }
-    expect(test.flushes.count).toBe(0)
-  })
-
   it('returns a range error only after the create preflight', async () => {
     const test = await harness()
     expect(value(await execute(test, 'schedule_create', {