fix(stammbaum): WCAG text-[10px] → text-xs in PersonRelationshipsCard chip labels

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

frontend/src/routes/persons/[id]/PersonRelationshipsCard.svelte

@@ -37,7 +37,7 @@ function otherId(rel: RelationshipDTO): string {
 				{#each relationships as rel (rel.id)}
 					<li class="flex items-center gap-2">
 						<span
-							class="inline-flex shrink-0 items-center rounded-full border border-accent/40 bg-accent/15 px-2 py-0.5 font-sans text-[10px] font-bold tracking-widest text-ink uppercase"
+							class="inline-flex shrink-0 items-center rounded-full border border-accent/40 bg-accent/15 px-2 py-0.5 font-sans text-xs font-bold tracking-widest text-ink uppercase"
 						>
 							{chipLabel(rel, personId)}
 						</span>
@@ -57,7 +57,7 @@ function otherId(rel: RelationshipDTO): string {
 				{#each topDerived as derived (derived.person.id)}
 					<li class="flex items-center gap-2">
 						<span
-							class="inline-flex shrink-0 items-center rounded-full border border-line bg-muted/50 px-2 py-0.5 font-sans text-[10px] font-bold tracking-widest text-ink-2 uppercase"
+							class="inline-flex shrink-0 items-center rounded-full border border-line bg-muted/50 px-2 py-0.5 font-sans text-xs font-bold tracking-widest text-ink-2 uppercase"
 						>
 							{inferredRelationshipLabel(derived.label)}
 						</span>

frontend/src/routes/persons/[id]/PersonRelationshipsCard.svelte.test.ts

@@ -74,6 +74,35 @@ describe('PersonRelationshipsCard', () => {
 		await expect.element(page.getByText('Elternteil von')).toBeInTheDocument();
 	});
 
+	it('chip labels use text-xs (≥12px) not text-[10px] — WCAG readable font size', async () => {
+		render(PersonRelationshipsCard, {
+			personId: PERSON_ID,
+			relationships: [
+				{
+					id: 'r1',
+					personId: PERSON_ID,
+					relatedPersonId: SPOUSE_ID,
+					personDisplayName: 'Anna',
+					relatedPersonDisplayName: 'Bertha',
+					relationType: 'SPOUSE_OF'
+				}
+			],
+			inferredRelationships: [
+				{
+					person: { id: PARENT_ID, displayName: 'Großmutter', familyMember: true },
+					label: 'Großmutter',
+					hops: 2
+				}
+			]
+		});
+		const chips = document.querySelectorAll<HTMLElement>('li span.rounded-full');
+		expect(chips.length).toBeGreaterThan(0);
+		chips.forEach((chip) => {
+			expect(chip.classList.contains('text-xs')).toBe(true);
+			expect(chip.classList.contains('text-[10px]')).toBe(false);
+		});
+	});
+
 	it('shows Kind-von chip when personId is the PARENT_OF object', async () => {
 		render(PersonRelationshipsCard, {
 			personId: PERSON_ID,