35f4cd136b
- Implement environment-aware API base URL detection * Auto-detects localhost vs production environment * Uses http://localhost:3002 for local development * Uses relative URLs for production deployment - Add placeholder translation support * Extended applyTranslations() to handle data-translate-placeholder * Fixed language mismatch where interface was German but placeholder stayed English * Now properly translates placeholder text when switching languages - Update cache-busting versions to force browser reload * Updated from v=20250629181500 to v=20250630173957 * Ensures browser loads updated JavaScript with fixes - Verify full API connectivity working * Local development server on port 3002 fully functional * AI-powered Socratic teaching system working perfectly * German/English language support complete Resolves 502 Bad Gateway errors and language consistency issues.