Function jitterFrac

src/utils/cronTasks.ts:362–365

* taskId is an 8-hex-char UUID slice (see addCronTask) → parse as * u32 → [0, 1). Stable across restarts, uniformly distributed across the * fleet. Non-hex ids (hand-edited JSON) fall back to 0 = no jitter.

(taskId: string)

 * fleet. Non-hex ids (hand-edited JSON) fall back to 0 = no jitter.
 */
function jitterFrac(taskId: string): number {
  const frac = parseInt(taskId.slice(0, 8), 16) / 0x1_0000_0000
  return Number.isFinite(frac) ? frac : 0
}

/**
 * Same as {@link nextCronRunMs}, plus a deterministic per-task delay to