updates on the ui changes and frully removed the mui and converted into astryx and color change

src/App.js

@@ -4,7 +4,6 @@ import ThemeCustomization from 'themes';
 import Locales from 'components/Locales';
 // import RTLLayout from 'components/RTLLayout';
 import ScrollTop from 'components/ScrollTop';
-import Snackbar from 'components/@extended/Snackbar';
 import Notistack from 'components/third-party/Notistack';
 import { useNavigate } from 'react-router';
 import { useEffect } from 'react';
@@ -29,12 +28,10 @@ const AppContent = () => {
     return () => unsubscribe?.();
   }, []);
 
-  return (
-    <>
-      <Routes />
-      <Snackbar />
-    </>
-  );
+  // The old redux-driven MUI <Snackbar> used to mount here. Nothing ever
+  // dispatched `openSnackbar`, so it was permanently closed — every real toast
+  // goes through notistack (OpenToast / GlobalToast). Removed with MUI.
+  return <Routes />;
 };
 
 // ==============================|| APP - THEME, ROUTER, LOCAL  ||============================== //