feat: install bits-ui and stylebase, scaffold UI wrappers
- pnpm add @taurean/stylebase bits-ui
- src/app.css imports stylebase and provides global focus ring
- +layout.svelte wires app.css
- src/lib/components/ui/Button.svelte and Accordion.svelte are
Svelte 5 + bits-ui wrappers (script-only agent territory)
- Storybook stories for both wrappers
- vitest-browser-svelte smoke tests for both wrappers
- .gitignore: worker-configuration.d.ts (wrangler build artifact)
Wrapper styling is intentionally minimal — human territory per
AGENTS.md. The wrappers render with stylebase defaults; the
hybrid strategy (global data-attribute CSS + per-component
overrides) is the next step.
Refs agent-notes/2026-06-03-02-install-bits-ui-stylebase.md