Initial commit: AutonetSellCar platform with deployment system

- Frontend: Next.js 14 with TypeScript
- Backend: FastAPI with SQLAlchemy
- Agent: Carmodoo sync agent
- Deployment: Docker Compose based staging/production setup
- Scripts: Automated deployment with rollback support

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/check_config.py

@@ -0,0 +1,8 @@
+import sys
+sys.path.insert(0, r'D:\Workspace\claudeCode\AutonetSellCar.com\backend')
+
+from app.config import get_settings
+
+settings = get_settings()
+print(f"USE_SQLITE: {settings.USE_SQLITE}")
+print(f"DATABASE_URL: {settings.DATABASE_URL}")