fix: resolve all failing tests across monorepo packages

[stooit]

Summary

• Renamed hook: Re-exported useDebounce as useSearchDebounce in apps/web/src/lib/api.ts to match the expected import name after the hook was renamed in packages/utils
• DOM environment: Configured happy-dom environment in root bunfig.toml so UI component tests have access to document
• Button accessibility: Forward aria-label prop through the Button component so icon-only buttons have an accessible name
• Date format: Changed format string from dd/MM/yyyy to d/MM/yyyy (non-zero-padded day) in the date formatter
• Stale closure: Used functional state update (prev => ...) in DataTable sort handler to avoid capturing stale state
• TypeScript: Added bun-types to tsconfig types array for proper bun:test module resolution

Verification

All 13 tests pass and tsc --noEmit reports 0 errors.

Assumptions

• The bun:test type errors were unintentional (bun-types was already installed but not referenced in tsconfig)
• The date format should use non-padded day (d/MM/yyyy) based on test expectations
• The useSearchDebounce export is a compatibility alias for the renamed useDebounce hook