Add author, updates, and donation links to About dialog

- Author link: shadowdao.com
- Updates link: shadowdao.com
- Donate link: liberapay.com/GoTakeAKnapp/
- Links are clickable and open in default browser

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

gui/main_window.py

@@ -540,13 +540,20 @@ class MainWindow(QMainWindow):
 
     def show_about(self):
         """Show about dialog."""
-        QMessageBox.about(
-            self, "About MacroPad Server",
-            f"MacroPad Server v{VERSION}\n\n"
-            "A cross-platform macro management application\n"
-            "with desktop and web interfaces.\n\n"
-            "PWA-enabled for mobile devices."
+        about_box = QMessageBox(self)
+        about_box.setWindowTitle("About MacroPad Server")
+        about_box.setTextFormat(Qt.RichText)
+        about_box.setTextInteractionFlags(Qt.TextBrowserInteraction)
+        about_box.setText(
+            f"<h2>MacroPad Server v{VERSION}</h2>"
+            "<p>A cross-platform macro management application<br>"
+            "with desktop and web interfaces.</p>"
+            "<p><b>Author:</b> <a href='https://shadowdao.com'>ShadowDAO</a></p>"
+            "<p><b>Updates:</b> <a href='https://shadowdao.com'>shadowdao.com</a></p>"
+            "<p><b>Donate:</b> <a href='https://liberapay.com/GoTakeAKnapp/'>Liberapay</a></p>"
         )
+        about_box.setStandardButtons(QMessageBox.Ok)
+        about_box.exec()
 
     def closeEvent(self, event):
         """Handle window close."""