Function markCronTasksFired

src/utils/cronTasks.ts:279–296

(
  ids: string[],
  firedAt: number,
  dir?: string,
)

 * just-written `lastFiredAt` — idempotent (same computation, same answer).
 */
export async function markCronTasksFired(
  ids: string[],
  firedAt: number,
  dir?: string,
): Promise<void> {
  if (ids.length === 0) return
  const idSet = new Set(ids)
  const tasks = await readCronTasks(dir)
  let changed = false
  for (const t of tasks) {
    if (idSet.has(t.id)) {
      t.lastFiredAt = firedAt
      changed = true
    }
  }
  if (!changed) return
  await writeCronTasks(tasks, dir)
}

/**
 * File-backed tasks + session-only tasks, merged. Session tasks get