Initial commit: svg backend

backend/app/services/normalized_reader.py

@@ -0,0 +1,16 @@
+import json
+from pathlib import Path
+
+from fastapi import HTTPException, status
+
+
+def read_normalized_payload_from_path(normalized_storage_path: str) -> dict:
+    path = Path(normalized_storage_path)
+
+    if not path.exists() or not path.is_file():
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Normalized snapshot file not found",
+        )
+
+    return json.loads(path.read_text(encoding="utf-8"))