Fix: missing JavaDoc comments and parameter tags

src/main/java/it/polimi/ingsw/gc14/ClientLauncherTUI.java

@@ -170,6 +170,17 @@ public class ClientLauncherTUI {
         }
     }
 
+    /**
+     * Lets the user choose one of the available active IPv4 network interfaces.
+     *
+     * <p>The method lists all active, non-loopback and non-virtual network
+     * interfaces with an IPv4 address. If only one interface is available, it is
+     * selected automatically.
+     *
+     * @param scanner the scanner used to read the user's choice.
+     * @return the selected IPv4 address as a string.
+     * @throws Exception if no valid network interface is available.
+     */
     public static String chooseNetworkInterface(Scanner scanner) throws Exception {
         List<String> ips = new ArrayList<>();