Dual sidebar app shell with icon rail and collapsible secondary navigation panel

reui/app-shell-16

Two-level dashboard layout: icon rail plus a toggleable secondary nav that swaps per section, with workspace switcher, breadcrumb header, search, and account menu with theme toggle. ReUI Badge, shadcn Sidebar, DropdownMenu, Avatar.

Paid component: its registry needs a licence from the library, so install it from their site.