99a5c9198e
Update API documentation: add endpoints for referral codes and database clearing; enhance song and user songs sections
47d36f7bec
Enhance referral code functionality: add code generation limit and retrieval endpoint; update README for new features
876c950694
Add package.json and README.md for song API setup and documentation
83f96bcc31
Add .gitignore to exclude node_modules, environment files, and JSON data