test(e2e): add transcribe-coach, richtlinien, and help-popover E2E specs; reducedMotion global default

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

frontend/e2e/help-popover.spec.ts

@@ -0,0 +1,30 @@
+import { test, expect } from '@playwright/test';
+import { createEmptyDocument } from './helpers/upload-empty-document.js';
+
+test.describe('Help chip — Read/Edit panel header', () => {
+	let docId: string;
+
+	test.beforeAll(async ({ request }) => {
+		docId = await createEmptyDocument(request);
+	});
+
+	test('opens popover on click, closes on Esc, returns focus to chip', async ({ page }) => {
+		await page.goto(`/documents/${docId}`);
+		await page.getByRole('button', { name: 'Transkribieren' }).click();
+
+		// Find and click the (?) help chip
+		const helpBtn = page.locator('button[aria-expanded]');
+		await expect(helpBtn).toBeVisible({ timeout: 5000 });
+		await helpBtn.click();
+
+		// Popover should open
+		await expect(page.locator('[role="tooltip"]')).toBeVisible();
+
+		// Press Esc
+		await page.keyboard.press('Escape');
+		await expect(page.locator('[role="tooltip"]')).not.toBeVisible();
+
+		// Focus should have returned to the chip
+		await expect(helpBtn).toBeFocused();
+	});
+});