{
 "kind": "verify",
 "contract_version": "1.0",
 "context_id": "ctx_SAMPLE_EXPIRED",
 "violations": [],
 "notices": [],
 "timing_ms": {
  "total": 8.4
 },
 "status": "context_expired",
 "error": {
  "code": "E_CONTEXT_EXPIRED",
  "message": "快照已过期（创建于 2026-11-05T06:20:59+0800，有效期 1 秒）",
  "retryable": true,
  "stage": "snapshot",
  "detail": null
 },
 "snapshot_created": "2026-11-05T06:20:59+0800",
 "_note": "快照过期：必须让调用方重新取上下文，而不是拿旧证据继续核验"
}