[Bug] Tray menu appears empty after recent refactoring

[insign]

Description

The tray icon context menu appears empty when clicking on the crossbar icon, even though logs show menu items are being set correctly.

Steps to Reproduce

1. Start crossbar GUI
2. Click on the tray icon
3. Menu appears empty (no items visible)

Expected Behavior

Menu should show: Show Crossbar, Refresh All Plugins, separator, Quit

Actual Behavior

Menu is empty or shows only blank area.

Logs

TrayService: Setting menu with 7 items, separateMode=false
TrayService: Menu set successfully

Environment

• OS: Linux (GNOME)
• Package: tray_manager

Notes

• This was working before the recent tray refactoring session
• setContextMenu is being called but visual update fails
• May be a regression introduced in recent commits

Related

Commits: bd13db4, ba49eb5