* Fix UI automation peer wrapping and category focusability
* Add accessibility name to SettingsButton
* Avoid nesting ScrollViewer in generated panels with outer viewers
Inspect targetGrid and its parent hierarchy in Invoke-WPFUIElements to avoid adding an inner ScrollViewer when an outer ScrollViewer already exists.
Tabs other than Install build their checkboxes lazily on first visit.
Import populates $sync.selected* and calls Reset-WPFCheckBoxes, but
that only touches checkboxes that already exist in $sync, so any tab
not yet visited gets its controls built later with default (unchecked)
state and never reflects the import. Re-apply Reset-WPFCheckBoxes right
after a tab's controls are built so it picks up existing selections.
