added favicon and finished the audit of the manual

src/main/java/kst4contest/view/GuiUtils.java

@@ -1,14 +1,66 @@
 package kst4contest.view;
 
 import kst4contest.controller.ChatController;
-import kst4contest.model.ChatMember;
-
-import java.util.function.Predicate;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import javafx.scene.image.Image;
+import javafx.stage.Stage;
+
+import java.net.URL;
+
 public class GuiUtils {
 
+	private static final String APPLICATION_ICON_RESOURCE = "/icons/kst4contest.png";
+
+	private static Image applicationIcon;
+
+	/**
+	 * Applies the common KST4Contest application icon to a JavaFX stage.
+	 *
+	 * <p>The icon is loaded only once and reused for all application windows.
+	 * A missing icon resource must never prevent a window from opening.</p>
+	 *
+	 * @param stage stage that should receive the application icon
+	 */
+	public static void applyApplicationIcon(Stage stage) {
+
+		if (stage == null) {
+			return;
+		}
+
+		Image icon = getApplicationIcon();
+
+		if (icon != null && !stage.getIcons().contains(icon)) {
+			stage.getIcons().add(icon);
+		}
+	}
+
+	/**
+	 * Loads and caches the common KST4Contest application icon.
+	 *
+	 * @return application icon or null if the resource is unavailable
+	 */
+	private static Image getApplicationIcon() {
+
+		if (applicationIcon != null) {
+			return applicationIcon;
+		}
+
+		URL iconUrl = GuiUtils.class.getResource(APPLICATION_ICON_RESOURCE);
+
+		if (iconUrl == null) {
+			System.err.println(
+					"Application icon resource not found: "
+							+ APPLICATION_ICON_RESOURCE
+			);
+			return null;
+		}
+
+		applicationIcon = new Image(iconUrl.toExternalForm());
+		return applicationIcon;
+	}
+
 	private static final String PTRN_CALLSIGNSYNTAX = "^(?:[A-Z]{1,2}[0-9]|[0-9][A-Z])[0-9A-Z]{1,3}$";
 	/**
 	 * Checks wheter the input value of the String is numeric or not, true if yes

src/main/java/kst4contest/view/Kst4ContestApplication.java

@@ -1,6 +1,7 @@
 package kst4contest.view;
 import kst4contest.utils.VersionUtils;
 
+import javafx.scene.image.Image;
 import java.io.File;
 import java.io.IOException;
 import java.net.URISyntaxException;
@@ -4439,6 +4440,8 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 			TextField txt_chatMessageUserInput
 	) {
 		Stage stage = new Stage();
+		GuiUtils.applyApplicationIcon(stage);
+
 		stage.setTitle("Top priority candidates");
 
 		ListView<kst4contest.controller.ScoreService.TopCandidate> listView = new ListView<>();
@@ -6376,7 +6379,7 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 	@Override
 	public void start(Stage primaryStage) throws InterruptedException, IOException, URISyntaxException {
 
-
+		GuiUtils.applyApplicationIcon(primaryStage);
 
 		VBox pnl_inputAndSendButtons = new VBox(); //gets the sendtext field, send button and the timeline
 		timelineView = new TimelineView();
@@ -8505,6 +8508,8 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 		 * Window Cluster & qso of the other
 		 */
 		clusterAndQSOMonStage = new Stage();
+		GuiUtils.applyApplicationIcon(clusterAndQSOMonStage);
+
 //		clusterAndQSOMonStage.initStyle(StageStyle.UTILITY);
 		clusterAndQSOMonStage.setTitle("Cluster & QSO of the other");
 		SplitPane pnl_directedMSGWin = new SplitPane();
@@ -8558,6 +8563,7 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 		 * Window updates
 		 */
 		stage_updateStage = new Stage();
+		GuiUtils.applyApplicationIcon(stage_updateStage);
 
 		stage_updateStage.setTitle("Update information");
 
@@ -8695,6 +8701,8 @@ public class Kst4ContestApplication extends Application implements StatusUpdateL
 		 *
 		 ****************************************************************************/
 		settingsStage = new Stage();
+		GuiUtils.applyApplicationIcon(settingsStage);
+
 		settingsStage.setTitle("Change Client Settings");
 
 		BorderPane optionsPanel = new BorderPane();

src/main/java/kst4contest/view/map/StationMapView.java

@@ -13,6 +13,7 @@ import javafx.scene.layout.VBox;
 import javafx.scene.web.WebEngine;
 import javafx.scene.web.WebView;
 import javafx.stage.Stage;
+import kst4contest.view.GuiUtils;
 import netscape.javascript.JSObject;
 import kst4contest.ApplicationConstants;
 import kst4contest.locatorUtils.Location;
@@ -179,6 +180,8 @@ public final class StationMapView {
 
     public StationMapView(ChatPreferences chatPreferences) {
         this.chatPreferences = Objects.requireNonNull(chatPreferences, "chatPreferences");
+        GuiUtils.applyApplicationIcon(stage);
+
         try {
             tileProxyServer = new TileProxyServer();
         } catch (IOException e) {