[
  {
    "stage_index": 1,
    "name": "Attempt Execution",
    "action_type": "dispatch",
    "description": "Invoke API / tool action with monotonic timestamp recording."
  },
  {
    "stage_index": 2,
    "name": "Exception Classification",
    "action_type": "inspection",
    "description": "Classify exception into retryable (429 rate limit, 503 service unavailable, timeout) vs fatal (401 auth, 400 invalid param)."
  },
  {
    "stage_index": 3,
    "name": "Jittered Backoff Calculation",
    "action_type": "calculation",
    "description": "Compute sleep delay: delay = min(max_delay, base_delay * 2^attempt) + random_jitter."
  },
  {
    "stage_index": 4,
    "name": "Deterministic Sleep & Turn Retry",
    "action_type": "retry",
    "description": "Wait calculated duration and re-dispatch until budget expires or success."
  }
]