refactor oauth2.1 support to fastmcp native

core/log_formatter.py

@@ -59,7 +59,6 @@ class EnhancedLogFormatter(logging.Formatter):
             'core.utils': '[UTILS]',
             'auth.google_auth': '[OAUTH]',
             'auth.credential_store': '[CREDS]',
-            'auth.oauth_common_handlers': '[OAUTH]',
             'gcalendar.calendar_tools': '[CALENDAR]',
             'gdrive.drive_tools': '[DRIVE]',
             'gmail.gmail_tools': '[GMAIL]',
@@ -189,4 +188,4 @@ def configure_file_logging(logger_name: str = None) -> bool:
 
     except Exception as e:
         sys.stderr.write(f"CRITICAL: Failed to set up file logging to '{log_file_path}': {e}\n")
-        return False
+        return False