a11y(persons): add aria-label to PersonTypeSelector radiogroup

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/lib/components/PersonTypeSelector.svelte

@@ -32,6 +32,7 @@ function select(type: PersonType) {
 
 <div
 	role="radiogroup"
+	aria-label={m.form_label_person_type()}
 	class="grid grid-cols-2 gap-2 sm:grid-cols-4"
 	use:radioGroupNav={(v) => { if (TYPES.includes(v as PersonType)) select(v as PersonType); }}
 >

frontend/src/lib/components/PersonTypeSelector.svelte.spec.ts

@@ -7,6 +7,13 @@ import PersonTypeSelector from './PersonTypeSelector.svelte';
 afterEach(() => cleanup());
 
 describe('PersonTypeSelector', () => {
+	it('radiogroup has an accessible name via aria-label', () => {
+		const { container } = render(PersonTypeSelector, { value: 'PERSON' });
+		const radiogroup = container.querySelector('[role="radiogroup"]');
+		expect(radiogroup).not.toBeNull();
+		expect(radiogroup!.getAttribute('aria-label')).toBeTruthy();
+	});
+
 	it('hidden input value updates when user navigates with ArrowRight', async () => {
 		const { container } = render(PersonTypeSelector, { value: 'PERSON' });
 		const hiddenInput = container.querySelector('input[type="hidden"]') as HTMLInputElement;