refactor(schedule): simplify recurrence evidence

packages/schedule/tool-schedule/src/domain.ts

@@ -532,9 +532,6 @@ export function resolveEveryOccurrence(
     || acceptedAt > MAX_FOUR_DIGIT_YEAR_MS) {
     throw new ScheduleLogError('every acceptedAt must be a representable four-digit-year instant')
   }
-  if (!Number.isSafeInteger(interval) || interval <= 0) {
-    throw new ScheduleLogError('every interval milliseconds must be a positive safe integer')
-  }
   if (acceptedAt < target) {
     throw new ScheduleLogError('every dispatch cannot precede the active scheduledAt')
   }

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

@@ -331,9 +331,6 @@ describe('fixed-rate records and durable progression', () => {
     expect(() => resolveEveryOccurrence(record, Date.parse('2026-08-05T12:04:59.999Z')))
       .toThrow(/cannot precede/)
     expect(() => resolveEveryOccurrence(record, Number.NaN)).toThrow(/acceptedAt/)
-    expect(() => resolveEveryOccurrence({ ...record, everySeconds: 0 }, Date.parse(record.scheduledAt)))
-      .toThrow(/interval milliseconds/)
-
     const final = {
       ...record,
       scheduledAt: '9999-12-31T23:59:59.999Z',

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

@@ -52,12 +52,4 @@ describe('fixed-rate recurrence properties', () => {
       },
     ), { numRuns: 300 })
   })
-
-  it('derives the 288-batch rolling-day bound from the fixed spacing', () => {
-    const spacing = 300_000
-    const day = 86_400_000
-    const accepted = Array.from({ length: 289 }, (_, index) => BASE + index * spacing)
-    expect(accepted.slice(0, 288).every(value => value >= BASE && value < BASE + day)).toBe(true)
-    expect(accepted[288]).toBe(BASE + day)
-  })
 })