test(crypto+db+cli): add master key, crypto, credentials_repo, and CLI tests

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/conftest.py

@@ -15,6 +15,13 @@ _scripts = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__
 if _scripts not in sys.path:
     sys.path.insert(0, _scripts)
 
+try:
+    import cryptography  # noqa: F401
+except ImportError as e:
+    raise RuntimeError(
+        "Stage B requires 'cryptography'. pip install cryptography --break-system-packages"
+    ) from e
+
 import pytest