Roving arrow-key focus in the runtime, then Nav, Pagination, Stepper,
MegaMenu, a Sidebar rebuilt on Drawer, and a Tabs rewritten off Tailwind onto
wire classes with real outputs and url-backed selection.
Also fixes the modal focus trap shipped in 0.8.5, which gated on
getBoundingClientRect and so never ran under test.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
ClintchizandClaude Opus 5