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.d.ts

@@ -9,6 +9,8 @@ export function AddTracks(arg1:Array<string>):Promise<void>;
 
 export function Clear():Promise<void>;
 
+export function CompactAfterLibraryRemoval():Promise<void>;
+
 export function CycleRepeat():Promise<void>;
 
 export function EmitCurrentState():Promise<void>;