update dock

desktop/src/main.rs

@@ -38,10 +38,12 @@ fn main() {
             std::fs::create_dir_all(paths::repos_dir()).ok();
             signed_state::GitStore::set_global(paths::repos_dir().clone(), cx);
 
-            // Set up the window bounds
+            // Set up the window options
             let bounds = Bounds::centered(None, size(px(1120.0), px(750.0)), cx);
 
-            // Set up the window options
+            // The dock's tab bar acts as the window title bar: the app owns
+            // title-bar dragging (via `start_window_move` on the tab bar), so
+            // AppKit must not treat the top strip as a native drag region.
             let opts = WindowOptions {
                 window_background: WindowBackgroundAppearance::Opaque,
                 window_decorations: Some(WindowDecorations::Client),
@@ -54,6 +56,7 @@ fn main() {
                     traffic_light_position: Some(point(px(9.0), px(9.0))),
                     appears_transparent: true,
                 }),
+                app_owns_titlebar_drag: true,
                 ..Default::default()
             };