fix: restart Dock/Finder/SystemUIServer after mackup restore

Mackup restores com.apple.dock.plist and other UI preference files, but
the running Dock/Finder processes don't reload them automatically. Add
ssr::macos::restart_ui (killall cfprefsd Dock Finder SystemUIServer + 2s
settle) called immediately after the mackup restore step so the Dock
layout and Finder settings take effect without requiring a logout.

Co-authored-by: Cursor <cursoragent@cursor.com>

bin/ssr-restore

@@ -96,6 +96,10 @@ ssr::rs::run brew_install    "Homebrew install"        ssr::brew::ensure_install
 ssr::rs::run brew_restore    "Brew bundle install"     ssr::brew::restore "$brewfile"
 ssr::rs::run mackup_restore  "Mackup restore"          _ssr_mackup_restore_step
 
+# Restart UI services so Dock/Finder/menubar pick up the plists restored
+# by Mackup (com.apple.dock.plist etc.) without requiring a logout.
+ssr::macos::restart_ui
+
 ssr::rs::run macos_defaults  "macOS defaults"          ssr::macos::apply_defaults
 
 if [[ "${SSR_SNAPSHOT_MACOS_PREFS:-true}" == "true" ]]; then