Summary

Fixes all failing tests and type errors across the monorepo. bun test (13 pass, 0 fail) and tsc --noEmit (clean) both green.

Changes

• apps/web/src/lib/api.ts — packages/utils renamed its hook useThrottle → useDebounce, but api.ts still imported the old name (and re-exported it as useSearchDebounce). Updated the import and re-export to the new name.
• packages/ui/src/components/Button/Button.tsx — the component destructured an aria-label prop but never rendered it. Now passes it through; icon-only buttons always emit the attribute so they expose an accessible name (WCAG 4.1.2).
• packages/ui/src/components/DataTable/DataTable.tsx — the sort-direction toggle read the stale closed-over sortDir. Switched to the functional-updater form (setSortDir(prev => ...)) to fix the stale-closure bug caught by the controlled re-render test.
• packages/utils/src/format/date.ts — used a format that zero-padded the day. Switched to Intl.DateTimeFormat("en-AU", { day: "numeric", month: "2-digit", year: "numeric" }) so day-first output has no leading zero on the day (e.g. 1/03/2024) while keeping a 4-digit year.
• bunfig.toml / packages/ui/bunfig.toml — configured the UI test suite to run under happy-dom so document is defined for @testing-library/react.
• tsconfig.json — added bun-types to compilerOptions.types so tsc resolves the bun:test virtual module.

Constraints honoured

• No test files modified.
• No new dependencies added (happy-dom, @happy-dom/global-registrator, and bun-types were already installed).
• Changes are minimal and scoped to the reported failures.

Verification

• bun test → 13 pass, 0 fail
• tsc --noEmit → clean