add image cache

crates/workspace/src/views/repo_detail/mod.rs

@@ -142,6 +142,10 @@ impl RepoDetailView {
         window: &mut Window,
         cx: &mut Context<Self>,
     ) -> Self {
+        // Owner/maintainer avatars shown by this view stay in the shared
+        // cache until the panel closes; free them then.
+        crate::image_cache::clear_on_release(&cx.entity(), window, cx);
+
         let store = cx.new(|cx| RepoStore::new(initial.addr(), cx));
         let tree_state = cx.new(|cx| TreeState::new(cx));
 
@@ -655,10 +659,11 @@ impl RepoDetailView {
             return;
         };
 
-        let panel = cx.new(|cx| IssuesView::new(self.store.clone(), self.display_name(cx), cx));
+        let panel =
+            cx.new(|cx| IssuesView::new(self.store.clone(), self.display_name(cx), window, cx));
 
         dock_area.update(cx, |dock_area, cx| {
-            dock_area.add_panel(Arc::new(panel), DockPlacement::Bottom, None, window, cx);
+            dock_area.add_panel(Arc::new(panel), DockPlacement::Center, None, window, cx);
         });
     }