Reserve titlebar space for right-side window controls

app/src/workspace/view.rs

@@ -17528,15 +17528,7 @@ impl Workspace {
         let zoom_factor = WindowSettings::as_ref(ctx).zoom_level.as_zoom_factor();
         let traffic_light_data = traffic_light_data(ctx, self.window_id);
         if let Some(traffic_light_data) = traffic_light_data.as_ref() {
-            let vertical_tabs_active = FeatureFlag::VerticalTabs.is_enabled()
-                && *TabSettings::as_ref(ctx).use_vertical_tabs;
-            let right_panel_open = self.current_workspace_state.is_right_panel_open();
-            let should_reserve_right_traffic_light_space =
-                vertical_tabs_active || !right_panel_open;
-
-            if traffic_light_data.side == TrafficLightSide::Right
-                && should_reserve_right_traffic_light_space
-            {
+            if should_reserve_traffic_light_space_in_tab_bar(traffic_light_data.side) {
                 target.add_child(
                     ConstrainedBox::new(Empty::new().finish())
                         .with_width(traffic_light_data.width(zoom_factor))
@@ -23887,6 +23879,10 @@ impl Workspace {
     }
 }
 
+fn should_reserve_traffic_light_space_in_tab_bar(side: TrafficLightSide) -> bool {
+    side == TrafficLightSide::Right
+}
+
 /// Returns every tab-bar-equivalent rect laid out in `window_id` (horizontal
 /// tab bar and/or vertical tabs panel). Both must be considered because a
 /// window with vertical tabs still renders the horizontal bar at the top.

app/src/workspace/view_test.rs

@@ -78,6 +78,20 @@ use ai::index::full_source_code_embedding::manager::CodebaseIndexManager;
 use ai::project_context::model::ProjectContextModel;
 use pane_group::{NotebookPane, PaneState, SplitPaneState, TerminalPaneId};
 use session_sharing_protocol::common::SessionId;
+
+#[test]
+fn tab_bar_reserves_space_for_right_side_traffic_lights() {
+    assert!(should_reserve_traffic_light_space_in_tab_bar(
+        TrafficLightSide::Right
+    ));
+}
+
+#[test]
+fn tab_bar_does_not_reserve_space_for_left_side_traffic_lights() {
+    assert!(!should_reserve_traffic_light_space_in_tab_bar(
+        TrafficLightSide::Left
+    ));
+}
 use terminal::shared_session::permissions_manager::SessionPermissionsManager;
 use terminal::view::ActiveSessionState;
 use warp_editor::editor::NavigationKey;