{
  "schema_name": "stats_weapons_json",
  "schema_version": 1,
  "artifact": "stats/weapons.json",
  "format": "json",
  "description": "Manifest-derived weapon exposure summary. Counts are sample-level and use active weapons observed in each released POV sample, not full inventory ownership.",
  "source_artifacts": [
    "manifest.parquet",
    "schema/weapons.json"
  ],
  "fields": [
    {
      "name": "schema_version",
      "json_type": "integer",
      "value": 1
    },
    {
      "name": "generated_at_utc",
      "json_type": "string"
    },
    {
      "name": "weapon_id_names",
      "json_type": "string",
      "description": "Relative path to the authoritative active_weapon_id enum."
    },
    {
      "name": "sample_count",
      "json_type": "integer",
      "description": "Number of released POV samples counted from manifest.parquet."
    },
    {
      "name": "primary_weapon_counts",
      "json_type": "object",
      "description": "Map from active_weapon_id string to number of samples where that id is the primary_weapon_id."
    },
    {
      "name": "weapon_present_counts",
      "json_type": "object",
      "description": "Map from active_weapon_id string to number of samples where that id appears in weapon_ids_present."
    },
    {
      "name": "top_weapon_cooccurrences",
      "json_type": "array",
      "description": "Most frequent unordered weapon-id pairs that co-occur within a sample's weapon_ids_present list.",
      "items": {
        "json_type": "object",
        "required_fields": [
          "weapon_id_a",
          "weapon_id_b",
          "count"
        ]
      }
    },
    {
      "name": "notes",
      "json_type": "array",
      "description": "Human-readable caveats. Must mention that counts are active-weapon/sample-level, not inventory-level."
    }
  ],
  "validation": [
    "sample_count == row count of manifest.parquet",
    "all weapon ids are valid indices into schema/weapons.json active_weapon_id.names",
    "primary_weapon_counts excludes id 0 unless unknown samples are explicitly reported",
    "weapon_present_counts excludes id 0",
    "top_weapon_cooccurrences are unordered pairs with weapon_id_a < weapon_id_b",
    "no Steam IDs, player names, match IDs, sample keys, or raw demo identifiers are present"
  ]
}