fix: PageHeader actions → trailingActionBar.actions

- Ubuntu Touch 24.04: actions-Property existiert nicht direkt in PageHeader
- Lösung: trailingActionBar.actions verwenden (wie in metime App)

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

qml/Main.qml

@@ -61,7 +61,7 @@ MainView {
 
             header: PageHeader {
                 title: "Fortune Cookie"
-                actions: [
+                trailingActionBar.actions: [
                     Action {
                         iconName: "settings"
                         text: "Einstellungen"