Complete extension SDK maturity

extensions/sdk-fixture/extension.json

@@ -0,0 +1,67 @@
+{
+  "id": "sdk-fixture",
+  "name": "SDK Fixture Extension",
+  "version": "0.1.0",
+  "extension_type": "repository_quality",
+  "lifecycle_status": "incubating",
+  "supported_frameworks": [
+    "guide-board.sdk-fixture.v1"
+  ],
+  "authorities": [],
+  "profile_schemas": [
+    "target-profile",
+    "assessment-profile",
+    {
+      "id": "sdk-fixture-target",
+      "profile_kind": "target",
+      "path": "schemas/sdk-fixture-target.schema.json",
+      "subject_type": "sdk-fixture-target",
+      "description": "Requires the target shape used by the SDK fixture runner."
+    },
+    {
+      "id": "sdk-fixture-assessment",
+      "profile_kind": "assessment",
+      "path": "schemas/sdk-fixture-assessment.schema.json",
+      "description": "Requires the runtime policy used by the SDK fixture normalizer test."
+    }
+  ],
+  "check_groups": [
+    {
+      "id": "native-output",
+      "name": "Native Output Normalization",
+      "check_type": "repository_quality",
+      "requirement_refs": [
+        "guide-board.sdk-fixture.v1.native-output"
+      ],
+      "runner_ref": "native-probe"
+    }
+  ],
+  "preflight_runner": null,
+  "runner_entrypoints": [
+    {
+      "id": "native-probe",
+      "kind": "python_module",
+      "module_path": "runners/native_probe.py",
+      "callable": "run",
+      "command": null,
+      "description": "Writes a tiny native result artifact for the SDK fixture normalizer."
+    }
+  ],
+  "normalizers": [
+    {
+      "id": "native-probe-normalizer",
+      "kind": "python_module",
+      "module_path": "normalizers/native_probe.py",
+      "callable": "normalize",
+      "runner_ref": "native-probe",
+      "description": "Converts the SDK fixture native result artifact into guide-board evidence."
+    }
+  ],
+  "mappings": [
+    "sdk-fixture-map"
+  ],
+  "report_fragments": [],
+  "dependencies": [],
+  "restricted_assets": [],
+  "certification_boundary": "SDK fixture only. It does not certify any product, process, or repository."
+}