P0 leak fixes: context/action menus destroyed on deactivate, config
callbacks unregistered in settings widgets, recorder and server signal
IDs stored and disconnected, bluetooth client closed and unsubscribed,
rfkill timer removed, seek timers cancelled, dropdown and options menus
freed, app name cache LRU-bounded.
Fix desktop 'Edit Widgets' and settings menu regressions by deferring
destroy out of Gtk signal handlers via GLib.idle_add.
Fix settings entry fields by connecting the activate signal explicitly
(Enter saves the value).
- Add attach_battery_proxy() for devices where Battery1 appears after Device1
- Handle BLUEZ_BATTERY_IFACE in InterfacesAdded signal
- Search existing devices by object path to attach late battery proxy
_check_icon_to_type now queries Gtk.IconTheme for the icon name
(with -symbolic suffix) before falling back to a hardcoded mapping.
_get_icon_for_device simplified since type property now returns
GTK icon names directly.
- Consolidate logger disabling, cache empty menus with TTL, and move name resolution to a dedicated resolver to reduce duplication and improve performance
sankalp