fix: banner translations and deployment improvements

- Add translateCarName import from i18n.ts for proper multilingual support
- Change default API language from 'ko' to 'en' for hero banners
- Add checkbox column for Local Cars banner registration
- Update Dockerfile with Playwright dependencies
- Add PostgreSQL migration script
- Add banner translation fix script

🤖 Generated with [Claude Code](https://claude.ai/claude-code)

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

frontend/src/lib/api.ts

@@ -133,7 +133,7 @@ export const inquiriesApi = {
 // Hero Banners API
 export const heroBannersApi = {
   // Public APIs
-  getList: async (lang: string = 'ko'): Promise<HeroBanner[]> => {
+  getList: async (lang: string = 'en'): Promise<HeroBanner[]> => {
     const { data } = await api.get('/hero-banners/', { params: { lang } });
     return data;
   },