Simple fixes

src/models.py

@@ -15,9 +15,9 @@ if JWT_SECRET_KEY == "your-default-secret-key-for-dev-only-CHANGE-ME":
 
 # Enums - Values are now ALL CAPS to match the PostgreSQL ENUM type labels, based on testing.
 class UserRole(str, enum.Enum):
-    STUDENT = "STUDENT"
-    STAFF = "STAFF"
-    ADMIN = "ADMIN"
+    STUDENT = "student"
+    STAFF = "staff"
+    ADMIN = "admin"
 
 class ClearanceStatusEnum(str, enum.Enum):
     COMPLETED = "COMPLETED"