{
  "cases": [
    {
      "id": "baseline_fast_receiver",
      "shape": "server_streaming",
      "deadline_ms": 900,
      "receiver_delay_ms": 0,
      "expected_class": "COMPLETE_OR_BOUNDED_LOCAL_SUCCESS"
    },
    {
      "id": "short_deadline_active_work",
      "shape": "server_streaming",
      "deadline_ms": 160,
      "receiver_delay_ms": 70,
      "expected_class": "DEADLINE_OR_BOUNDED_TERMINATION"
    },
    {
      "id": "slow_receiver_flow_probe",
      "shape": "server_streaming",
      "deadline_ms": 1800,
      "receiver_delay_ms": 70,
      "expected_class": "OBSERVE_WRITE_PROGRESS_TIMING"
    },
    {
      "id": "write_heavy_no_read_guard",
      "shape": "bidirectional_streaming",
      "watchdog_ms": 180,
      "expected_class": "DEADLOCK_RISK_SIMULATION_ONLY"
    }
  ]
}