[blvdmitry]

Summary

PR 2 of the Phase −1 bug-fix stack.

• Switch role (Switch/Switch.tsx): added role="switch" to the native checkbox. aria-checked isn't set, because the native checked state already exposes it. oxlint's role-has-required-aria-props doesn't know that, so there's a scoped disable comment with the reason.
• onChange without name (HiddenInput/HiddenInput.tsx): removed the if (!name) return guard. Checkbox, Radio and HiddenInput now call onChange when no name is passed. name comes through as "" to match the ChangeHandler type.
• disabled precedence (HiddenInput/HiddenInput.tsx): ?? became ||, matching Checkbox and Radio. FormControl disabled={false} no longer re-enables a disabled group or input.

Tests:

• Switch.stories.tsx now queries getByRole("switch").
• New HiddenInput.stories.tsx stories: test: onChange without name and test: disabled precedence.
• All of these fail on the base branch and pass here.

Related Issue

Phase −1 of the headless-extraction plan.

Screenshots / Recordings

No visual changes.

Notes for Reviewers

• This PR is stacked on fix(form-control): wire FormControl attributes into all form fields #681 (fix/form-control-a11y).
• Results: pnpm lint passes. pnpm test:browser has 609 passing and 1 failing, Image > onLoad, which fails on main too in this sandbox because it has no network access.
• An earlier commit on this branch was pushed before lint ran. The second commit fixes the lint warning.

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