fix: clear stale download overlay after delete

Deleting a download removed the database row but left its entry in the
live-progress map, so the row kept showing Saved and an Offline badge
until the app restarted.

src/App.tsx

@@ -73,7 +73,7 @@ export default function App() {
   );
 
   const { items, channels, loading, error, reload } = useFeed(filter);
-  const live = useDownloads(reload);
+  const { live, clear: clearLive } = useDownloads(reload);
 
   useEffect(() => {
     let un: (() => void) | undefined;
@@ -212,7 +212,7 @@ export default function App() {
                     cancelDownload(item.id).catch((e) => setFailure(String(e))),
                   onDelete: () =>
                     deleteDownload(item.id)
-                      .then(() => { reload(); say("Download deleted"); })
+                      .then(() => { clearLive(item.id); reload(); say("Download deleted"); })
                       .catch((e) => setFailure(String(e))),
                 };
                 return view === "grid" ? (
@@ -232,6 +232,7 @@ export default function App() {
           onClose={() => setPlaying(null)}
           onDelete={async () => {
             await deleteDownload(playing.item.id);
+            clearLive(playing.item.id);
             setPlaying(null);
             reload();
             say("Download deleted");