{
    "scenario": "contention",
    "scope": "Disposable PostgreSQL 16 component qualification; not production capacity or RTO",
    "callers": 32,
    "instances": 4,
    "pool_limit": 8,
    "initial_requests": 4096,
    "initial_accepted": 2048,
    "followup_accepted": 512,
    "elapsed_ms": 8908,
    "reserve_p95_ms": 127,
    "reserve_p99_ms": 205,
    "reserve_max_ms": 406,
    "invariant_violations": 0
}