shared playlists: a deleted playlist takes its share with it, so the next one does not go out wearing its name

src-tauri/src/lib.rs

@@ -76,6 +76,14 @@ pub fn run() {
             freenet::init(app.handle());
             if let Err(e) = pipeline::init(app.handle()) {
                 log::error!("library init failed: {e}");
+            } else {
+                // After pipeline::init, which is what manages the library:
+                // a share record whose playlist is gone keeps a key the
+                // database will hand to the next playlist created.
+                let h = app.handle().clone();
+                tauri::async_runtime::spawn(async move {
+                    shared_playlists::reconcile_deleted(&h).await;
+                });
             }
             Ok(())
         })