{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://szl-holdings.github.io/szl-kernels-live/schemas/kernel-contract.schema.json",
  "title": "SZL governed kernel contract",
  "type": "object",
  "required": [
    "schema_version",
    "id",
    "revision",
    "artifact",
    "runtime",
    "probe",
    "source_binding",
    "limitations",
    "deprecation"
  ],
  "properties": {
    "schema_version": {"const": "1.0.0"},
    "id": {"type": "string", "pattern": "^SZLHOLDINGS/[A-Za-z0-9._-]+$"},
    "revision": {"type": "string", "pattern": "^[0-9a-f]{40}$"},
    "artifact": {
      "type": "object",
      "required": ["repo_type", "build", "files", "tree_digest_sha256"],
      "properties": {
        "repo_type": {"const": "kernel"},
        "build": {"const": "torch-cpu"},
        "files": {"type": "array", "minItems": 2},
        "tree_digest_sha256": {"type": "string", "pattern": "^[0-9a-f]{64}$"}
      }
    },
    "runtime": {
      "type": "object",
      "required": ["classification", "packages", "measured_compatibility", "hf_declared_driver_families"]
    },
    "limitations": {"type": "array", "minItems": 1, "items": {"type": "string"}},
    "deprecation": {
      "type": "object",
      "required": ["status", "replacement"],
      "properties": {
        "status": {
          "enum": ["FLAGSHIP_EXPERIMENTAL", "ACTIVE_EXPERIMENTAL", "RETAINED_COMPATIBILITY"]
        }
      }
    }
  },
  "additionalProperties": true
}