Dual-rail sidebar -- a thin always-visible icon column on the far left holds quick shortcuts (a subset of the full nav), paired with a wider main panel for the brand, search, sections, and footer. Uses collapsible="icon": when the user collapses, only the rail stays. On mobile the kit Sheet shows the full dual rail. Requires the parent SidebarProvider to set both widths: style={{ '--sidebar-width': '19.5rem', '--sidebar-width-icon': '3.5rem' }}. Modeled on the GR8R HRMS admin shell.
npx shadcn@latest add https://uipkge.dev/r/react/sidebar-05.jsonsidebar-05