feat: remove unused client mutex

- remove unused Mutex from `models.Client` struct
- remove lock from `HandleConnection()`
- replace websocket.Conn with models.Client in `handleClientCommands()`

🤖

internal/websocket/handle_connection.go

@@ -31,12 +31,13 @@ func HandleConnection(w http.ResponseWriter, r *http.Request) {
 	log.Info("Client connected", "host", ws.NetConn().RemoteAddr(), "clients", len(Clients)+1)
 
 	// Register the new client
-	mu.Lock()
-	Clients[ws] = &models.Client{
-		Conn: ws, // Store the WebSocket connection
+	client := models.Client{
+		Conn: ws,
 	}
+	mu.Lock()
+	Clients[ws] = &client
 	mu.Unlock()
 
 	// Listen for commands from the connected client
-	handleClientCommands(ws)
+	handleClientCommands(client)
 }