Add Node environment setup and package management guidelines

Author: ralyodio

.roo/rules/04-node-environment.md

@@ -0,0 +1,29 @@
+# Node Environment Rules
+
+## Development Server
+
+- Always use `pnpm dev` to start the development server
+- Never use `pkill` to terminate processes; use proper shutdown methods instead
+- Always look up the port in the `.env` file for browser requests
+- Use `Ctrl+C` to gracefully stop the development server
+
+## Environment Variables
+
+- Store all configuration in the `.env` file
+- Reference the `.env` file for ports, API keys, and other configuration
+- Never hardcode ports or configuration values in code
+- Use environment variables for different environments (development, staging, production)
+
+## Package Management
+
+- Use `pnpm` as the package manager for all operations
+- Run `pnpm install` after pulling new changes
+- Use `pnpm add <package>` to add new dependencies
+- Use `pnpm add -D <package>` for development dependencies
+
+## Process Management
+
+- One development server instance per project
+- Check for running processes before starting new ones
+- Use proper shutdown signals to terminate processes
+- Monitor the terminal output for errors and warnings