{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.invalid/mcu-ir/mlir_batch_config.schema.json",
  "title": "Pinned ONNX-MLIR batch model configuration",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema_version", "model_id", "task", "priority", "model_dir",
    "toolchain_lock", "toolchain_lock_sha256", "timeout_sec", "pipeline",
    "variants"
  ],
  "properties": {
    "schema_version": {"const": "1.0"},
    "model_id": {"type": "string", "pattern": "^[A-Z]{2}[0-9]{2}$"},
    "task": {"type": "string", "minLength": 1},
    "priority": {"type": "string", "minLength": 1},
    "model_dir": {"type": "string", "minLength": 1},
    "toolchain_lock": {"type": "string", "minLength": 1},
    "toolchain_lock_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"},
    "timeout_sec": {"type": "integer", "minimum": 1},
    "pipeline": {"type": "array", "minItems": 1, "items": {"type": "string"}},
    "variants": {
      "type": "object",
      "additionalProperties": false,
      "required": ["fp32", "public_quantized"],
      "properties": {
        "fp32": {"$ref": "#/$defs/variant"},
        "public_quantized": {"$ref": "#/$defs/variant"}
      }
    }
  },
  "$defs": {
    "variant": {
      "type": "object",
      "additionalProperties": false,
      "required": [
        "input_path", "input_exists", "input_sha256", "input_bytes",
        "input_source", "registry_expected_sha256"
      ],
      "properties": {
        "input_path": {"type": "string", "minLength": 1},
        "input_exists": {"type": "boolean"},
        "input_sha256": {"type": ["string", "null"], "pattern": "^[0-9a-f]{64}$"},
        "input_bytes": {"type": ["integer", "null"], "minimum": 0},
        "input_source": {"enum": ["CANONICAL_T40_ONNX", "CHECKSUM_VERIFIED_REGISTRY_ONNX", "MISSING_T40_ONNX_PREREQUISITE"]},
        "registry_expected_sha256": {"type": ["string", "null"]}
      }
    }
  }
}