chore(v2): establish protocol and test foundation

tests/contract/test_no_v1.py

@@ -1,9 +1,8 @@
 from __future__ import annotations
 
-from pathlib import Path
 import subprocess
 import sys
-
+from pathlib import Path
 
 ROOT = Path(__file__).parents[2]
 

tests/contract/test_repository_format.py

@@ -7,7 +7,6 @@ from typing import Any
 import jsonschema
 import pytest
 
-
 ROOT = Path(__file__).parents[2]
 CONTRACT = ROOT / "contracts" / "repository" / "v1"
 FIXTURES = CONTRACT / "fixtures"