fix(12-02): reorder orphan cleanup to delete FK children before recordings

recording_genres and release_group_recordings reference recordings.id,
so they must be deleted BEFORE the recordings table is cleaned.
Also extends toast duration to 8s for readability.

frontend/wailsjs/go/queue/Queue.js

@@ -14,6 +14,10 @@ export function Clear() {
   return window['go']['queue']['Queue']['Clear']();
 }
 
+export function CompactAfterLibraryRemoval() {
+  return window['go']['queue']['Queue']['CompactAfterLibraryRemoval']();
+}
+
 export function CycleRepeat() {
   return window['go']['queue']['Queue']['CycleRepeat']();
 }