test(#240): add component tests for all four Mission Control Strip components

17 tests across SegmentationColumn, TranscriptionColumn, ReadyColumn,
MissionControlStrip. Covers document list rendering, per-column empty
states, weekly pulse visibility, link hrefs, progress bar, and the
reviewedPct denominator (annotationCount, not textedBlockCount).

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

frontend/src/lib/components/MissionControlStrip.svelte.spec.ts

@@ -0,0 +1,105 @@
+import { describe, it, expect, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import { page } from 'vitest/browser';
+import MissionControlStrip from './MissionControlStrip.svelte';
+import type { components } from '$lib/generated/api';
+
+type TranscriptionQueueItemDTO = components['schemas']['TranscriptionQueueItemDTO'];
+type TranscriptionWeeklyStatsDTO = components['schemas']['TranscriptionWeeklyStatsDTO'];
+
+afterEach(cleanup);
+
+function makeDoc(
+	id: string,
+	title: string,
+	overrides: Partial<TranscriptionQueueItemDTO> = {}
+): TranscriptionQueueItemDTO {
+	return {
+		id,
+		title,
+		annotationCount: 0,
+		textedBlockCount: 0,
+		reviewedBlockCount: 0,
+		...overrides
+	};
+}
+
+const emptyStats: TranscriptionWeeklyStatsDTO = {
+	segmentationCount: 0,
+	transcriptionCount: 0,
+	readyCount: 0
+};
+
+describe('MissionControlStrip', () => {
+	it('renders section heading always', async () => {
+		render(MissionControlStrip, {
+			props: {
+				segmentationDocs: [],
+				transcriptionDocs: [],
+				readyDocs: [],
+				weeklyStats: null
+			}
+		});
+
+		await expect.element(page.getByText('Was braucht Aufmerksamkeit?')).toBeInTheDocument();
+	});
+
+	it('renders all three column headings', async () => {
+		render(MissionControlStrip, {
+			props: {
+				segmentationDocs: [makeDoc('s1', 'Seg Dok')],
+				transcriptionDocs: [makeDoc('t1', 'Trans Dok')],
+				readyDocs: [makeDoc('r1', 'Ready Dok')],
+				weeklyStats: emptyStats
+			}
+		});
+
+		await expect.element(page.getByText('Rahmen einzeichnen')).toBeInTheDocument();
+		await expect.element(page.getByText('Text eintippen')).toBeInTheDocument();
+		await expect.element(page.getByText(/Lesefertig/)).toBeInTheDocument();
+	});
+
+	it('renders document titles in correct columns', async () => {
+		const segDoc = makeDoc('seg-1', 'Segmentierungs Brief');
+		const transDoc = makeDoc('trans-1', 'Transkriptions Postkarte');
+		const readyDoc = makeDoc('ready-1', 'Fertiger Tagebucheintrag');
+
+		render(MissionControlStrip, {
+			props: {
+				segmentationDocs: [segDoc],
+				transcriptionDocs: [transDoc],
+				readyDocs: [readyDoc],
+				weeklyStats: emptyStats
+			}
+		});
+
+		await expect.element(page.getByText('Segmentierungs Brief')).toBeInTheDocument();
+		await expect.element(page.getByText('Transkriptions Postkarte')).toBeInTheDocument();
+		await expect.element(page.getByText('Fertiger Tagebucheintrag')).toBeInTheDocument();
+	});
+
+	it('renders section heading even when all arrays are empty and weeklyStats is null', async () => {
+		render(MissionControlStrip, {
+			props: {
+				segmentationDocs: [],
+				transcriptionDocs: [],
+				readyDocs: [],
+				weeklyStats: null
+			}
+		});
+
+		// Heading always visible
+		await expect.element(page.getByText('Was braucht Aufmerksamkeit?')).toBeInTheDocument();
+
+		// All three empty states should also be visible
+		await expect
+			.element(page.getByText('Alle Dokumente haben bereits Segmentierungsblöcke.'))
+			.toBeInTheDocument();
+		await expect
+			.element(page.getByText('Keine Dokumente warten auf Transkription.'))
+			.toBeInTheDocument();
+		await expect
+			.element(page.getByText('Noch keine Dokumente vollständig transkribiert.'))
+			.toBeInTheDocument();
+	});
+});