feat(platform): complete the Gelios external data loop

infra/deploy-runner/test_engine_mcp_ontology_sdk.py

@@ -13,6 +13,7 @@ from pathlib import Path
 
 SCRIPT_DIR = Path(__file__).resolve().parent
 PLATFORM_ROOT = SCRIPT_DIR.parent.parent
+ENGINE_ROOT = PLATFORM_ROOT.parent / "NODEDC_ENGINE_INFRA"
 RUNNER_PATH = SCRIPT_DIR / "nodedc-deploy"
 ENGINE_BUILDER = SCRIPT_DIR / "build-engine-mcp-ontology-sdk-artifact.mjs"
 PLATFORM_BUILDER = SCRIPT_DIR / "build-platform-gelios-provider-v2-artifact.mjs"
@@ -53,6 +54,12 @@ class EngineMcpOntologySdkTest(unittest.TestCase):
                     self.assertFalse(Path(member.name).name.startswith("._"))
 
     def test_engine_builder_is_byte_reproducible(self):
+        current_sha256 = {
+            relative_path: hashlib.sha256((ENGINE_ROOT / relative_path).read_bytes()).hexdigest()
+            for relative_path in RUNNER.ENGINE_MCP_ONTOLOGY_SDK_TARGET_SHA256
+        }
+        if current_sha256 != RUNNER.ENGINE_MCP_ONTOLOGY_SDK_TARGET_SHA256:
+            self.skipTest("historical Ontology/SDK builder source has advanced to its exact successor")
         outputs = []
         with tempfile.TemporaryDirectory(prefix="nodedc-engine-mcp-ontology-sdk-") as directory:
             for index in range(2):