Enhance the Filament admin panel configuration to align with the new design system and enable core features.
- Implement custom color palette including dark navy for sidebar
- Set Vazirmatn as the primary font
- Enable SPA mode and collapsible sidebar for improved UX
- Configure database-driven notifications and global search bindings
- Add necessary web middleware stack for session and cookie management
- Create new migration for the notifications system
- Add directory for custom Filament render hooks
