{

  "$schema": "https://json-schema.org/draft/2020-12/schema",

  "$id": "https://landscapearchive.org/schemas/orbits/tla-syn.required.schema.json",

  "title": "TLA-SYN required-keys smoke (Draft — not normative)",

  "description": "Required-key + enum smoke for la.archive.synthetic-nature.v1 golden examples. Not a full normative schema; not Archive Seal.",

  "type": "object",

  "additionalProperties": true,

  "required": [

    "schema_id",

    "schema_version",

    "pack_id",

    "created_at",

    "asset",

    "nature_class",

    "generation",

    "lineage",

    "attribution",

    "disclosure",

    "tla185_refs"

  ],

  "properties": {

    "schema_id": { "const": "la.archive.synthetic-nature.v1" },

    "schema_version": { "type": "integer", "const": 1 },

    "pack_id": { "type": "string", "minLength": 1 },

    "created_at": { "type": "string", "minLength": 1 },

    "asset": { "type": "object" },

    "nature_class": {

      "type": "string",

      "enum": ["surveyed", "modelled", "synthetic", "composite", "unknown"]

    },

    "generation": {

      "type": "object",

      "required": ["method"],

      "properties": {

        "method": {

          "type": "string",

          "enum": ["none", "procedural", "photogrammetry", "generative_ai", "manual_sculpt", "mixed", "other"]

        }

      }

    },

    "lineage": { "type": "object" },

    "attribution": { "type": "object" },

    "disclosure": {

      "type": "object",

      "required": ["marked_synthetic"],

      "properties": {

        "marked_synthetic": { "type": "boolean" }

      }

    },

    "tla185_refs": { "type": "object" }

  }

}