Extract a shared form-field pattern for labels and errors

[Abidoyesimze]

Summary

Forms duplicate label, hint, error, and aria-describedby wiring.

Affected files

• src/app/(auth)/signup/page.tsx
• src/components/help/SupportForm.tsx
• src/components/ui/FormErrors.tsx

Tasks

• Create or extend a shared FormField (or similar) primitive.
• Migrate signup and support forms to use it.
• Ensure errors are announced correctly to assistive tech.

Acceptance criteria

• Scope is limited to the files listed (or agreed alternatives in the PR).
• Change is verifiable: tests, screenshots, or written QA steps in the PR.
• No behavior regressions in related user flows.
• No new duplicate abstractions without a one-line rationale in the PR.

Suggested labels

cleanup, a11y, refactor

Notes

Standalone cleanup issue from CLEANUP_ISSUES_2026-05.md. Complements the audit queue and product backlog.