feat(admin): add OCR admin routes — overview, global history, sender detail

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

frontend/src/routes/admin/ocr/[personId]/page.server.spec.ts

@@ -0,0 +1,33 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { load } from './+page.server';
+
+const mockApi = { GET: vi.fn() };
+
+vi.mock('$lib/api.server', () => ({ createApiClient: () => mockApi }));
+
+beforeEach(() => vi.clearAllMocks());
+
+describe('admin/ocr/[personId] — load', () => {
+	it('returns sender history from API', async () => {
+		const personId = '123e4567-e89b-12d3-a456-426614174000';
+		mockApi.GET.mockResolvedValue({
+			response: { ok: true },
+			data: { runs: [], personNames: { [personId]: 'Anna Müller' } }
+		});
+
+		const result = (await load({ params: { personId }, fetch } as never))!;
+
+		expect(result.history.personNames?.[personId]).toBe('Anna Müller');
+	});
+
+	it('throws 404 when person not found', async () => {
+		mockApi.GET.mockResolvedValue({
+			response: { ok: false, status: 404 },
+			error: { code: 'PERSON_NOT_FOUND' }
+		});
+
+		await expect(
+			load({ params: { personId: 'unknown-id' }, fetch } as never)
+		).rejects.toMatchObject({ status: 404 });
+	});
+});