Updated project name references in configuration, scripts, and code. This includes changes to database URLs, Docker commands, environment variables, and displayed API titles. Ensures consistency with the new project name "App".
Implemented a full-stack template combining Next.js (frontend), FastAPI (backend), and PostgreSQL. Included Docker configurations for development and production, environment file templates, Makefile commands, and initial setup for database migrations and builds. The stack is production-ready and supports hot-reloading for local development.