Visual grouping for related form fields — semantically a `<fieldset>` with a `<legend>` heading, so screen readers announce the group name before the inner fields.

• src/components/registry/components/forms/form-fieldset.tsx→components/registry/components/forms/form-fieldset.tsx
• src/components/registry/components/forms/form-fieldset.recipe.ts→src/recipes/form-fieldset.recipe.ts