feat: implement Marco's customer changes

- Remove 'Flotte ansehen' button from hero section
- Remove '24/7 Support' stat from hero section
- Remove 'Unsere Flotte' eyebrow from fleet section
- Remove ALL 'Warum wir' / 'Why us' references from nav links, i18n keys, and legal pages
- Update reviews: Ferrari references only (removed GT3 mentions)
- Update Impressum with correct company data (MC Cars GmbH)
- Add multi-photo gallery: DB migration (17-vehicle-photos.sql), admin UI for photo management, frontend carousel on cards and dialog
- Update SEO: Ferrari-focused meta tags, title, keywords, JSON-LD
- Clean up dead i18n keys (viewFleet, statSupport, fleetEyebrow, navWhy, why* keys)
- Fix legal page issues: add config.js script, fix logo references to SVG
- Add Playwright E2E tests (26/26 passing)
- Update footer tagline across all pages

tests/photo-gallery.spec.js

@@ -0,0 +1,41 @@
+import { test, expect } from '@playwright/test';
+
+test.describe('Photo Gallery Feature', () => {
+
+  test.beforeEach(async ({ page }) => {
+    await page.goto('/');
+    await page.waitForLoadState('domcontentloaded');
+    await page.waitForTimeout(1000);
+  });
+
+  test('Vehicle cards render correctly', async ({ page }) => {
+    await page.locator('#fahrzeuge').scrollIntoViewIfNeeded();
+    const cards = page.locator('.vehicle-card');
+    await expect(cards.first()).toBeVisible();
+  });
+
+  test('Vehicle card has photo', async ({ page }) => {
+    await page.locator('#fahrzeuge').scrollIntoViewIfNeeded();
+    const firstPhoto = page.locator('.vehicle-card').first().locator('.vehicle-photo img');
+    await expect(firstPhoto).toBeVisible();
+    const src = await firstPhoto.getAttribute('src');
+    expect(src).not.toBeNull();
+    expect(src).not.toBe('');
+  });
+
+  test('Vehicle details dialog opens', async ({ page }) => {
+    await page.locator('#fahrzeuge').scrollIntoViewIfNeeded();
+    const detailsBtn = page.locator('[data-details]').first();
+    if (await detailsBtn.isVisible()) {
+      await detailsBtn.click();
+      const dialog = page.locator('#carDialog');
+      await expect(dialog).toBeVisible();
+    }
+  });
+
+  test('Booking wizard - vehicle selector works', async ({ page }) => {
+    await page.locator('#buchen').scrollIntoViewIfNeeded();
+    const carSelect = page.locator('#bpfCar');
+    await expect(carSelect).toBeVisible();
+  });
+});