**Patch release.** A single layout fix, fully backward-compatible.

### Fixed

- **[`<x-wirekit::app-shell>`](https://docs.wirekit.app/components/app-shell) now reflows its main content when a [`collapsible`](https://docs.wirekit.app/components/sidebar) sidebar collapses to its icon rail.** The shell's sidebar column was a fixed 16rem, so when the nested `<x-wirekit::sidebar collapsible>` shrank to its 3.5rem rail the main content kept its left offset and a ~12.5rem gap appeared. On desktop the column now tracks the sidebar's width — following the `--wk-sidebar-w` variable when expanded and shrinking to the rail width when the sidebar is collapsed — so the content reclaims the freed space. Mobile (the off-canvas overlay) is unchanged.