fix: remove duplicate client registration

- delete the client creation logic from handleClientCommands

internal/websocket/handle_connections.go

@@ -23,9 +23,11 @@ func HandleConnections(w http.ResponseWriter, r *http.Request) {
 	defer ws.Close()
 
 	// Register the new client
+	mu.Lock()
 	Clients[ws] = &models.Client{
 		Conn: ws, // Store the WebSocket connection
 	}
+	mu.Unlock()
 
 	// Listen for commands from the connected client
 	handleClientCommands(ws)