Enhance root layout and admin interface for better usability

- Updated the root layout to include a mobile menu toggle, improving navigation on smaller screens.
- Refactored navigation links and language/theme selection for better organization and accessibility.
- Added overflow handling for admin navigation and tables to ensure proper display on smaller screens.
- Improved translations for menu toggle accessibility in both Russian and English.

frontend/src/shared/ui/dialog.tsx

@@ -11,7 +11,7 @@ export function DialogContent({ className, children, ...props }: DialogPrimitive
       <DialogPrimitive.Overlay className="fixed inset-0 z-50 bg-black/60" />
       <DialogPrimitive.Content
         className={cn(
-          'fixed left-1/2 top-1/2 z-50 w-full max-w-md -translate-x-1/2 -translate-y-1/2 rounded-lg border border-border bg-background p-6 shadow-lg',
+          'fixed left-1/2 top-1/2 z-50 w-[calc(100vw-2rem)] max-w-md -translate-x-1/2 -translate-y-1/2 rounded-lg border border-border bg-background p-6 shadow-lg',
           className,
         )}
         {...props}