{
  "format_version": 1,
  "save_slice_id": "packed-event-named-locomotive-availability-save-slice",
  "source": {
    "description": "Tracked save-slice document proving named locomotive availability survives save import and can be mutated by imported packed events.",
    "original_save_filename": "captured-named-locomotive-availability.gms",
    "original_save_sha256": "named-locomotive-availability-sample-sha256",
    "notes": [
      "tracked as JSON save-slice document rather than raw .smp",
      "locks the named locomotive availability import surface without guessing per-descriptor locomotive names"
    ]
  },
  "save_slice": {
    "file_extension_hint": "gms",
    "container_profile_family": "rt3-classic-save-container-v1",
    "mechanism_family": "classic-save-rehydrate-v1",
    "mechanism_confidence": "grounded",
    "trailer_family": null,
    "bridge_family": null,
    "profile": null,
    "candidate_availability_table": null,
    "named_locomotive_availability_table": {
      "source_kind": "runtime-save-direct-serializer",
      "semantic_family": "scenario-named-locomotive-availability-table",
      "header_offset": null,
      "entries_offset": null,
      "entries_end_offset": null,
      "observed_entry_count": 2,
      "zero_availability_count": 1,
      "zero_availability_names": [
        "GP7"
      ],
      "entries": [
        {
          "index": 0,
          "offset": 0,
          "text": "Big Boy",
          "availability_dword": 1,
          "availability_dword_hex": "0x00000001",
          "trailer_word": 1,
          "trailer_word_hex": "0x00000001"
        },
        {
          "index": 1,
          "offset": 65,
          "text": "GP7",
          "availability_dword": 0,
          "availability_dword_hex": "0x00000000",
          "trailer_word": 0,
          "trailer_word_hex": "0x00000000"
        }
      ]
    },
    "special_conditions_table": null,
    "event_runtime_collection": {
      "source_kind": "packed-event-runtime-collection",
      "mechanism_family": "classic-save-rehydrate-v1",
      "mechanism_confidence": "grounded",
      "container_profile_family": "rt3-classic-save-container-v1",
      "metadata_tag_offset": 28928,
      "records_tag_offset": 29184,
      "close_tag_offset": 29440,
      "packed_state_version": 1001,
      "packed_state_version_hex": "0x000003e9",
      "live_id_bound": 17,
      "live_record_count": 1,
      "live_entry_ids": [
        17
      ],
      "decoded_record_count": 1,
      "imported_runtime_record_count": 1,
      "records": [
        {
          "record_index": 0,
          "live_entry_id": 17,
          "payload_offset": 29186,
          "payload_len": 64,
          "decode_status": "executable",
          "payload_family": "synthetic_harness",
          "trigger_kind": 7,
          "active": true,
          "marks_collection_dirty": false,
          "one_shot": false,
          "text_bands": [],
          "standalone_condition_row_count": 0,
          "standalone_condition_rows": [],
          "grouped_effect_row_counts": [
            0,
            0,
            0,
            0
          ],
          "grouped_effect_rows": [],
          "decoded_actions": [
            {
              "kind": "set_named_locomotive_availability",
              "name": "Big Boy",
              "value": false
            },
            {
              "kind": "set_named_locomotive_availability",
              "name": "Mikado",
              "value": true
            }
          ],
          "executable_import_ready": true,
          "notes": [
            "fixture packed-event record"
          ]
        }
      ]
    },
    "notes": [
      "named locomotive availability import surface"
    ]
  }
}