feat(runtime): implement single-article consolidation runtime and modularize codebase

tests/runtime/contract/test_contract_parity.py

@@ -0,0 +1,16 @@
+"""Contract parity tests checking that all schema contracts match version 1.0.0."""
+
+import json
+from pathlib import Path
+
+
+def test_all_contract_schemas_version_1_0_0():
+    contracts_dir = Path("specs/006-article-consolidation-runtime/contracts")
+    schema_files = list(contracts_dir.glob("*.schema.json"))
+    assert len(schema_files) >= 5
+
+    for sf in schema_files:
+        data = json.loads(sf.read_text(encoding="utf-8"))
+        version = data.get("x-contract-version") or data.get("version")
+        # Assert each schema declares version 1.0.0
+        assert version == "1.0.0", f"Schema {sf.name} version is {version}, expected 1.0.0"