Add audit Select and polish shell controls #179
- MA
## Summary - add a shared Base UI-backed Select composition to @chopin/visuals - adopt it only in the design audit field specimen - refine button, field, radio, link-focus, busy, and reduced-motion presentation
This intentionally does not migrate product pickers or change application behavior. Stacked on #178.
## Verification - 59 focused tests pass - 1,519 repository tests pass; 2 PostgreSQL-environment skips - bun run types - bun run ci - bun run build - git diff --check
## Component preview


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