chore: improve toast and show once

src/hooks/useApiToast.jsx

@@ -5,7 +5,7 @@ export default function useApiToast() {
 
     const handleError = (error, defaultMessage = 'API error') => {
         console.error(error);
-        enqueueSnackbar(error.message || defaultMessage, { variant: 'error' });
+        enqueueSnackbar(defaultMessage, { variant: 'error' });
     };
 
     return { handleError };