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

playwright.config.js

@@ -0,0 +1,21 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './tests',
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: 'list',
+  use: {
+    baseURL: process.env.APP_URL || 'http://localhost:55580',
+    trace: 'on-first-retry',
+    screenshot: 'only-on-failure',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+});