Add server control script and improve logging

\n- Add scripts/start-server.sh for easy server management\n- Add DLC_NO_COLOR environment variable support for clean logs\n- Update server.go to handle color/no-color logging\n- Add server.log and server.pid to .gitignore\n- Update README.md and AGENTS.md with server control documentation\n- Test all server control functions (start, stop, restart, status, logs, test)

AGENTS.md

@@ -85,7 +85,41 @@ DanceLessonsCoach/
 
 ## 🚀 Server Management
 
-### Starting the Server
+### Using the Server Control Script
+
+A convenient shell script is provided for managing the server lifecycle:
+
+```bash
+# Navigate to project directory
+cd /Users/gabrielradureau/Work/Vibe/DanceLessonsCoach
+
+# Start the server
+./scripts/start-server.sh start
+
+# Check server status
+./scripts/start-server.sh status
+
+# Test API endpoints
+./scripts/start-server.sh test
+
+# View server logs
+./scripts/start-server.sh logs
+
+# Stop the server
+./scripts/start-server.sh stop
+```
+
+**Server Control Script Commands:**
+- `start` - Start the server in background with proper logging
+- `stop` - Stop the server gracefully
+- `restart` - Restart the server
+- `status` - Check if server is running
+- `logs` - Show recent server logs
+- `test` - Test all API endpoints
+
+### Manual Server Management
+
+If you prefer manual control:
 
 ```bash
 # Navigate to project directory