{
  "format_version": 1,
  "snapshot_id": "packed-event-locomotive-availability-overlay-base-snapshot",
  "source": {
    "description": "Base runtime snapshot supplying locomotive catalog context for descriptor-driven named locomotive availability import."
  },
  "state": {
    "calendar": {
      "year": 1835,
      "month_slot": 1,
      "phase_slot": 2,
      "tick_slot": 4
    },
    "world_flags": {
      "base.only": true
    },
    "metadata": {
      "base.note": "preserve locomotive catalog context"
    },
    "locomotive_catalog": [
      {
        "locomotive_id": 10,
        "name": "Big Boy 4-8-8-4"
      },
      {
        "locomotive_id": 58,
        "name": "VL80T"
      }
    ],
    "named_locomotive_availability": {
      "Big Boy 4-8-8-4": 0,
      "VL80T": 1
    },
    "event_runtime_records": [],
    "candidate_availability": {},
    "special_conditions": {},
    "service_state": {
      "periodic_boundary_calls": 0,
      "trigger_dispatch_counts": {},
      "total_event_record_services": 0,
      "dirty_rerun_count": 0
    }
  }
}