Library: mark titles that are downloading

While the Library is visible it reads the Radarr and Sonarr queues (on
opening, every 10 s, and shortly after a grab) and matches them to the
titles by movieId / seriesId. Those titles get a blue dot instead of the
green or grey one, and their details say how far the download is.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/ui/releases.go

@@ -270,6 +270,9 @@ func (v *releasesView) doGrab(r arr.Release) {
 			}
 			v.app.SetMessage("[green]Sent to the download client: " + tview.Escape(truncate(r.Title, 60)))
 			v.app.closeIfTop(v.root) // done here: back to where the search started
+			for _, f := range v.app.afterGrab {
+				time.AfterFunc(3*time.Second, func() { v.app.post(f) })
+			}
 		})
 	}()
 }