test: cover enrich/done and documents/bulk-edit page branches

enrich/done: heading, body, both CTA links.

documents/bulk-edit: empty-store onMount redirect to /documents,
loading spinner during in-flight fetch, error banner on backend error
code, error banner on fetch rejection. Mocks fetch via vi.spyOn so the
async branches are exercised without a real backend.

Refs #496.

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

frontend/src/routes/documents/bulk-edit/page.svelte.test.ts

@@ -0,0 +1,80 @@
+import { describe, it, expect, vi, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+
+const gotoSpy = vi.fn();
+vi.mock('$app/navigation', () => ({
+	beforeNavigate: () => {},
+	afterNavigate: () => {},
+	goto: gotoSpy,
+	invalidate: vi.fn(),
+	invalidateAll: vi.fn(),
+	preloadCode: vi.fn(),
+	preloadData: vi.fn(),
+	pushState: vi.fn(),
+	replaceState: vi.fn(),
+	disableScrollHandling: vi.fn(),
+	onNavigate: () => () => {}
+}));
+
+const { bulkSelectionStore } = await import('$lib/document/bulkSelection.svelte');
+const { default: BulkEditPage } = await import('./+page.svelte');
+
+afterEach(() => {
+	cleanup();
+	bulkSelectionStore.clear();
+	gotoSpy.mockClear();
+});
+
+describe('documents/bulk-edit page', () => {
+	it('redirects to /documents when no documents are selected', async () => {
+		render(BulkEditPage, { props: {} });
+
+		// onMount runs immediately — give it a tick
+		await new Promise((r) => setTimeout(r, 50));
+
+		expect(gotoSpy).toHaveBeenCalledWith('/documents');
+	});
+
+	it('shows the loading spinner while fetching batch metadata', async () => {
+		bulkSelectionStore.toggle('d1');
+		const fetchSpy = vi.spyOn(globalThis, 'fetch').mockImplementation(() => new Promise(() => {}));
+		try {
+			render(BulkEditPage, { props: {} });
+
+			await expect.element(page.getByRole('status')).toBeVisible();
+			await expect.element(page.getByText('Dokumente werden geladen…')).toBeVisible();
+		} finally {
+			fetchSpy.mockRestore();
+		}
+	});
+
+	it('shows the error banner when the fetch fails with a backend error code', async () => {
+		bulkSelectionStore.toggle('d1');
+		const fetchSpy = vi.spyOn(globalThis, 'fetch').mockResolvedValue(
+			new Response(JSON.stringify({ code: 'INTERNAL_ERROR' }), {
+				status: 500,
+				headers: { 'Content-Type': 'application/json' }
+			})
+		);
+		try {
+			render(BulkEditPage, { props: {} });
+
+			await expect.element(page.getByRole('alert')).toBeVisible();
+		} finally {
+			fetchSpy.mockRestore();
+		}
+	});
+
+	it('shows the error banner when fetch throws an unexpected error', async () => {
+		bulkSelectionStore.toggle('d1');
+		const fetchSpy = vi.spyOn(globalThis, 'fetch').mockRejectedValue(new Error('Network down'));
+		try {
+			render(BulkEditPage, { props: {} });
+
+			await expect.element(page.getByRole('alert')).toBeVisible();
+		} finally {
+			fetchSpy.mockRestore();
+		}
+	});
+});

frontend/src/routes/enrich/done/page.svelte.test.ts

@@ -0,0 +1,36 @@
+import { describe, it, expect, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import EnrichDonePage from './+page.svelte';
+
+afterEach(cleanup);
+
+describe('enrich/done page', () => {
+	it('renders the success heading', async () => {
+		render(EnrichDonePage, { props: {} });
+
+		await expect.element(page.getByRole('heading', { name: /alles erledigt/i })).toBeVisible();
+	});
+
+	it('renders the body message', async () => {
+		render(EnrichDonePage, { props: {} });
+
+		await expect.element(page.getByText('Alle Dokumente wurden bearbeitet.')).toBeVisible();
+	});
+
+	it('links the primary CTA to the home page', async () => {
+		render(EnrichDonePage, { props: {} });
+
+		await expect
+			.element(page.getByRole('link', { name: /zurück zur übersicht/i }))
+			.toHaveAttribute('href', '/');
+	});
+
+	it('links the secondary CTA back to /enrich', async () => {
+		render(EnrichDonePage, { props: {} });
+
+		await expect
+			.element(page.getByRole('link', { name: /zurück zur liste/i }))
+			.toHaveAttribute('href', '/enrich');
+	});
+});