Badges (React, Node, MongoDB, MIT) Features list (User + Admin) Full tech stack table Step-by-step setup instructions Demo credentials Complete API reference tables Project folder structure Deployment guide (Render + Netlify) Security overview Contributing guide .gitignore covers: node_modules/ — both frontend and backend .env files — all variants so secrets are never pushed build/ and dist/ — compiled output OS files — .DS_Store, Thumbs.db Editor files — .vscode/, .idea/ Logs, test coverage, and misc