feat(persons): enrich /persons list with stats bar, life dates, doc count chip

Load /api/stats in parallel; PersonsStatsBar shows totals; person cards
show alias, life date range, and document count badge.

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

frontend/src/routes/persons/page.svelte.spec.ts

@@ -11,11 +11,24 @@ const makePerson = (overrides = {}) => ({
 	id: '1',
 	firstName: 'Max',
 	lastName: 'Mustermann',
+	documentCount: 0,
 	...overrides
 });
 
-const emptyData = { user: undefined, canWrite: true, canAnnotate: false, q: '', persons: [] };
-const dataWithPersons = { ...emptyData, persons: [makePerson()] };
+const defaultStats = { totalPersons: 0, totalDocuments: 0 };
+const emptyData = {
+	user: undefined,
+	canWrite: true,
+	canAnnotate: false,
+	q: '',
+	persons: [],
+	stats: defaultStats
+};
+const dataWithPersons = {
+	...emptyData,
+	persons: [makePerson()],
+	stats: { totalPersons: 1, totalDocuments: 3 }
+};
 
 afterEach(cleanup);
 
@@ -48,6 +61,22 @@ describe('Persons page – rendering', () => {
 			.element(page.getByRole('link', { name: /Max Mustermann/ }))
 			.toHaveAttribute('href', '/persons/1');
 	});
+
+	it('shows alias in italic when provided', async () => {
+		render(Page, { data: { ...emptyData, persons: [makePerson({ alias: 'Maxi' })] } });
+		await expect.element(page.getByText('"Maxi"')).toBeInTheDocument();
+	});
+
+	it('shows life date range when birthYear is provided', async () => {
+		render(Page, { data: { ...emptyData, persons: [makePerson({ birthYear: 1900 })] } });
+		await expect.element(page.getByText('* 1900')).toBeInTheDocument();
+	});
+
+	it('shows stats bar with person and document counts', async () => {
+		render(Page, { data: dataWithPersons });
+		await expect.element(page.getByText(/1 Person/)).toBeInTheDocument();
+		await expect.element(page.getByText(/3 Dokumente/)).toBeInTheDocument();
+	});
 });
 
 // ─── Keystroke preservation (issue #34) ──────────────────────────────────────