test(person): add now-required precision fields to Person test fixtures

birthDatePrecision/deathDatePrecision are @Schema REQUIRED, so the
generated Person type makes them non-optional — fixtures that were
type-clean before the regen get UNKNOWN defaults.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/routes/DocumentList.svelte.spec.ts

@@ -288,6 +288,8 @@ describe('DocumentList – undated badge in person grouping', () => {
 		lastName: 'Mustermann',
 		displayName: 'Max Mustermann',
 		personType: 'PERSON' as const,
+		birthDatePrecision: 'UNKNOWN' as const,
+		deathDatePrecision: 'UNKNOWN' as const,
 		familyMember: false,
 		provisional: false
 	};
@@ -296,6 +298,8 @@ describe('DocumentList – undated badge in person grouping', () => {
 		lastName: 'Brandt',
 		displayName: 'Felix Brandt',
 		personType: 'PERSON' as const,
+		birthDatePrecision: 'UNKNOWN' as const,
+		deathDatePrecision: 'UNKNOWN' as const,
 		familyMember: false,
 		provisional: false
 	};