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/page.server.spec.ts

@@ -0,0 +1,28 @@
+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 — load', () => {
+	it('returns trainingInfo from API', async () => {
+		mockApi.GET.mockResolvedValue({
+			response: { ok: true },
+			data: { availableBlocks: 10, ocrServiceAvailable: true, senderModels: [] }
+		});
+
+		const result = (await load({ fetch } as never))!;
+
+		expect(result.trainingInfo.availableBlocks).toBe(10);
+		expect(result.trainingInfo.ocrServiceAvailable).toBe(true);
+	});
+
+	it('throws 503 when OCR API call fails', async () => {
+		mockApi.GET.mockResolvedValue({ response: { ok: false, status: 503 }, error: {} });
+
+		await expect(load({ fetch } as never)).rejects.toMatchObject({ status: 503 });
+	});
+});