add contributing guidelines

README.md

@@ -22,72 +22,6 @@ Yet another Chess web app. Live demo at [ches.su](https://ches.su).
 
 Built with Next.js 13, Tailwind CSS + daisyUI, react-chessboard, chess.js, Express.js, socket.io and PostgreSQL.
 
-## Configuration
-
-> Node.js 18 or newer is recommended.
-
-This project is structured as a monorepo using npm workspaces, separated into three packages:
-
-- `client` - Next.js application for the front-end, deployed to [ches.su](https://ches.su) via Vercel.
-- `server` - Node/Express.js application for the back-end, deployed to [server.ches.su](https://server.ches.su) via Railway.
-- `types` - Shared type definitions for the client and server.
-
-For separate deployments, you may exclude the `client` or `server` directory. However, you should include the `types` folder as it contains shared type definitions that are required by both packages.
-
-### Environment variables
-
-client:
-
-```env
-NEXT_PUBLIC_API_URL=http://localhost:3001 # replace with backend URL
-```
-
-server:
-
-```env
-CORS_ORIGIN=http://localhost:3000 # replace with frontend URL
-PORT=3001
-SESSION_SECRET=randomstring # replace for security
-
-# PostgreSQL connection info (required)
-PGHOST=db.example.com
-PGUSER=exampleuser
-PGPASSWORD=examplepassword
-PGDATABASE=chessu
-```
-
-You may also create a `.env` file in each package directory to set their environment variables.
-
-### Scripts
-
-For development:
-
-```sh
-# install all dependencies, including eslint and prettier
-npm install
-
-# concurrently run frontend and backend development servers
-npm run dev
-
-# or run them separately
-npm run dev -w client
-npm run dev -w server
-```
-
-For production:
-
-```sh
-# for separate deployments
-npm install -w client
-npm install -w server
-
-npm run build -w client
-npm run build -w server
-
-npm start -w client
-npm start -w server
-```
-
 ## Contributing
 
-Pull requests are welcome. For feature changes or suggestions, please open an issue first for discussion.
+Please read our [Code of Conduct](./CODE_OF_CONDUCT.md) and [Contributing Guidelines](./CONTRIBUTING.md) before starting a pull request.