A dumb, styled sidebar shell — sticky, full-height, scrollable flex container. It renders an `<aside>` and applies no internal structure; the consumer is responsible for composing whatever goes inside (logo, nav, `NavItem`s, etc.).
A dumb, styled sidebar shell — sticky, full-height, scrollable flex container. It renders an `<aside>` and applies no internal structure; the consumer is responsible for composing whatever goes inside (logo, nav, `NavItem`s, etc.).