Clear moved items from the selection

Move To only cleared the selection when more than one item moved, so a
single moved item stayed selected — invisible — in the target workspace.
Moved items are now always removed from the selection.

Sources/Prompt/PanelView.swift

@@ -354,7 +354,11 @@ struct PanelView: View {
                 ForEach(store.sections.filter { $0.id != store.sectionID(of: item.id) }) { section in
                     Button(section.name) {
                         store.move(ids: ids, to: section.id)
-                        if multiple { clearSelection() }
+                        // Moved items leave the current view, so they must
+                        // leave the selection too — otherwise they stay
+                        // selected, invisible, in the target workspace.
+                        selection.subtract(ids)
+                        lastSelectedID = nil
                     }
                 }
             }