test(admin): cover OcrModelsTable null/em-dash branches

cer/accuracy null → em-dash, cer/accuracy set → percentage,
corrected-lines raw number, multiple rows.

6 tests covering ~10 branches.

Refs #496.

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

frontend/src/routes/admin/ocr/OcrModelsTable.svelte.test.ts

@@ -0,0 +1,88 @@
+import { describe, it, expect, afterEach } from 'vitest';
+import { cleanup, render } from 'vitest-browser-svelte';
+import OcrModelsTable from './OcrModelsTable.svelte';
+import type { components } from '$lib/generated/api';
+
+afterEach(cleanup);
+
+type SenderModel = components['schemas']['SenderModel'];
+
+const baseModel = (overrides: Partial<SenderModel> = {}): SenderModel =>
+	({
+		id: 'm1',
+		personId: '123e4567-e89b-12d3-a456-426614174000',
+		correctedLinesAtTraining: 100,
+		createdAt: '2026-01-01T00:00:00Z',
+		updatedAt: '2026-04-01T00:00:00Z',
+		cer: 0.05,
+		accuracy: 0.95,
+		...overrides
+	}) as SenderModel;
+
+describe('OcrModelsTable — null/em-dash branches', () => {
+	it('renders em-dash when cer is null', async () => {
+		render(OcrModelsTable, {
+			senderModels: [baseModel({ cer: null as unknown as undefined })],
+			personNames: {}
+		});
+
+		const tds = document.querySelectorAll('tbody td');
+		const cerCell = tds[1] as HTMLTableCellElement;
+		expect(cerCell.textContent?.trim()).toBe('—');
+	});
+
+	it('renders em-dash when accuracy is null', async () => {
+		render(OcrModelsTable, {
+			senderModels: [baseModel({ accuracy: null as unknown as undefined })],
+			personNames: {}
+		});
+
+		const tds = document.querySelectorAll('tbody td');
+		const accuracyCell = tds[2] as HTMLTableCellElement;
+		expect(accuracyCell.textContent?.trim()).toBe('—');
+	});
+
+	it('renders cer as percentage when set', async () => {
+		render(OcrModelsTable, {
+			senderModels: [baseModel({ cer: 0.0432 })],
+			personNames: {}
+		});
+
+		const tds = document.querySelectorAll('tbody td');
+		const cerCell = tds[1] as HTMLTableCellElement;
+		expect(cerCell.textContent?.trim()).toBe('4.3%');
+	});
+
+	it('renders accuracy as percentage when set', async () => {
+		render(OcrModelsTable, {
+			senderModels: [baseModel({ accuracy: 0.967 })],
+			personNames: {}
+		});
+
+		const tds = document.querySelectorAll('tbody td');
+		const accuracyCell = tds[2] as HTMLTableCellElement;
+		expect(accuracyCell.textContent?.trim()).toBe('96.7%');
+	});
+
+	it('renders the corrected-lines training count as raw number', async () => {
+		render(OcrModelsTable, {
+			senderModels: [baseModel({ correctedLinesAtTraining: 247 })],
+			personNames: {}
+		});
+
+		expect(document.body.textContent).toContain('247');
+	});
+
+	it('renders multiple models as separate rows', async () => {
+		render(OcrModelsTable, {
+			senderModels: [
+				baseModel({ id: 'm1', personId: 'p1' }),
+				baseModel({ id: 'm2', personId: 'p2' })
+			],
+			personNames: { p1: 'Anna', p2: 'Bertha' }
+		});
+
+		const rows = document.querySelectorAll('tbody tr');
+		expect(rows.length).toBe(2);
+	});
+});