show alert buttons carrying their own text in the terminal rather than failing to map them

### src/main/java/com/sparrowwallet/sparrow/terminal/ButtonTypeDialog.java
@@ -0,0 +1,47 @@
+package com.sparrowwallet.sparrow.terminal;
+
+import com.googlecode.lanterna.TerminalSize;
+import com.googlecode.lanterna.gui2.*;
+import com.googlecode.lanterna.gui2.dialogs.DialogWindow;
+import javafx.scene.control.ButtonType;
+
+import java.util.List;
+
+/**
+ * Shows an alert whose buttons carry text of their own, which Lanterna's MessageDialog cannot do - its buttons are a fixed enum of OK, Cancel, Yes and
+ * so on. Mapping a button such as "Refresh Wallet" onto one of those loses the only description of what it does, and the role it declares is no
+ * substitute: the wallet refresh is a CANCEL_CLOSE button, so it would be offered as Cancel while doing the opposite of cancelling.
+ * <p>
+ * The button that was pressed is returned as the instance the caller supplied, since callers identify their own buttons by identity.
+ */
+public class ButtonTypeDialog extends DialogWindow {
+    private ButtonType result;
+
+    public ButtonTypeDialog(String title, String content, ButtonType[] buttonTypes) {
+        super(title);
+
+        setHints(List.of(Hint.CENTERED));
+
+        Panel buttonPanel = new Panel();
+        buttonPanel.setLayoutManager(new GridLayout(buttonTypes.length).setHorizontalSpacing(1));
+        for(ButtonType buttonType : buttonTypes) {
+            buttonPanel.addComponent(new Button(buttonType.getText(), () -> {
+                result = buttonType;
+                close();
+            }));
+        }
+
+        Panel mainPanel = new Panel();
+        mainPanel.setLayoutManager(new GridLayout(1).setLeftMarginSize(1).setRightMarginSize(1));
+        mainPanel.addComponent(new Label("\n" + content));
+        mainPanel.addComponent(new EmptySpace(TerminalSize.ONE));
+        buttonPanel.setLayoutData(GridLayout.createLayoutData(GridLayout.Alignment.END, GridLayout.Alignment.CENTER, false, false)).addTo(mainPanel);
+        setComponent(mainPanel);
+    }
+
+    @Override
+    public ButtonType showDialog(WindowBasedTextGUI textGUI) {
+        super.showDialog(textGUI);
+        return result;
+    }
+}

### src/main/java/com/sparrowwallet/sparrow/terminal/TerminalInteractionServices.java
@@ -35,6 +35,12 @@ public Optional<ButtonType> showAlert(String title, String content, Alert.AlertT
     private Optional<ButtonType> showMessageDialog(String title, String content, ButtonType[] buttons) {
         String formattedContent = formatLines(content, 50);
 
+        //A button carrying text of its own cannot be shown by MessageDialog, and is the only description of what it does, so those alerts get a
+        //dialog built from the supplied buttons directly. Keeping MessageDialog for the rest also keeps getButton injective over the buttons it maps
+        if(Arrays.stream(buttons).anyMatch(TerminalInteractionServices::isCustomButton)) {
+            return Optional.ofNullable(new ButtonTypeDialog(title, formattedContent, buttons).showDialog(SparrowTerminal.get().getGui()));
+        }
+
         MessageDialogBuilder builder = new MessageDialogBuilder().setTitle(title).setText("\n" + formattedContent);
         for(ButtonType buttonType : buttons) {
             builder.addButton(getButton(buttonType));
@@ -44,6 +50,11 @@ private Optional<ButtonType> showMessageDialog(String title, String content, But
         return Arrays.stream(buttons).filter(buttonType -> button.equals(getButton(buttonType))).findFirst();
     }
 
+    private static boolean isCustomButton(ButtonType buttonType) {
+        return !ButtonType.OK.equals(buttonType) && !ButtonType.CANCEL.equals(buttonType) && !ButtonType.YES.equals(buttonType)
+                && !ButtonType.NO.equals(buttonType) && !ButtonType.CLOSE.equals(buttonType);
+    }
+
     private String formatLines(String input, int maxLength) {
         StringBuilder builder = new StringBuilder();
         BreakIterator boundary = BreakIterator.getLineInstance(Locale.ROOT);