fix(auth): resolve variable scoping issue in service decorator

- Move original_param_names declaration outside conditional block
- Fixes 'cannot access local variable' error in authentication flow
- Ensures variable is available for both kwargs and positional arg paths

Author: cfdude

auth/service_decorator.py

@@ -567,12 +567,12 @@ def decorator(func: Callable) -> Callable:
         @wraps(func)
         async def wrapper(*args, **kwargs):
             # Extract user_google_email - use robust approach that works with injected services
+            original_param_names = list(original_sig.parameters.keys())
             user_google_email = None
             if "user_google_email" in kwargs:
                 user_google_email = kwargs["user_google_email"]
             else:
                 # Look for user_google_email in positional args using original function signature
-                original_param_names = list(original_sig.parameters.keys())
                 try:
                     user_email_index = original_param_names.index('user_google_email')
                     if user_email_index < len(args):