web: properly exit catchup mode when done

web/src/state.rs

@@ -626,14 +626,18 @@ pub fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
                 return;
             };
             let Some(idx) = catchup.items.iter().position(|i| !i.seen) else {
+                // All items have been seen
+                orders.send_msg(Msg::CatchupExit);
                 orders.send_msg(Msg::GoToSearchResults);
                 return;
             };
             catchup.items[idx].seen = true;
             if idx < catchup.items.len() - 1 {
+                // Reached last item
                 orders.request_url(urls::thread(&catchup.items[idx + 1].id));
                 return;
             } else {
+                orders.send_msg(Msg::CatchupExit);
                 orders.send_msg(Msg::GoToSearchResults);
                 return;
             };