Port · Build: Zed's gpui at 1a28cff

gpui and gpui_platform now come from Zed's repo by git at 1a28cff,
the code gpui-pre 0.3.7 republishes, so the gallery can later build
for the browser. gpui takes stacker, as 0.2.2 always did, and
gpui_platform takes font-kit, without which macOS draws no text;
runtime_shaders moves to gpui_platform.

The API moved: focus, blur and Tab steps take cx, Corner is Anchor,
shaped lines paint with an alignment, defer_draw takes a content
mask, the inspector registers a factory, async updates return their
value, and wrapped lines are shared, not cloned. Updates through a
window context go through the window, so a closed window still ends
them as it did.

Where the new gpui behaves differently, Ely keeps its old intent.
Holds and reveals under a resting pointer survive typing through
gpui's input-modality-independent hover; previews the keyboard also
moves keep the default, and the calendar's leave ignores a key press.
Enter reaches a button inside the code editor, since gpui now arms a
key click on the press. The event logger skips a lone modifier. A
video and an image grid keep their shape in a flex column under
taffy 0.13, as a picture does.

AGENTS.md records the new stack and the rules this port changes; the
rest of the old gpui and taffy rules are re-tested in T44c.

src/menus/tests/more.rs

@@ -24,6 +24,8 @@ fn action(name: &str, action: impl gpui::Action) -> OwnedMenuItem {
         name: name.into(),
         action: Box::new(action),
         os_action: None,
+        checked: false,
+        disabled: false,
     }
 }
 
@@ -33,6 +35,7 @@ impl Render for Bar {
             OwnedMenu {
                 name: "File".into(),
                 items: vec![action("Open", OpenFile), action("Save", Save)],
+                disabled: false,
             },
             OwnedMenu {
                 name: "Edit".into(),
@@ -42,8 +45,10 @@ impl Render for Bar {
                     OwnedMenuItem::Submenu(OwnedMenu {
                         name: "More".into(),
                         items: vec![action("Deep", Deep)],
+                        disabled: false,
                     }),
                 ],
+                disabled: false,
             },
         ];
         div()
@@ -70,7 +75,7 @@ fn bar(cx: &mut TestAppContext) -> (gpui::Entity<Bar>, &mut VisualTestContext) {
         ran: Vec::new(),
     });
     settle(cx);
-    cx.update(|window, _| window.focus_next());
+    cx.update(|window, cx| window.focus_next(cx));
     (view, cx)
 }
 
@@ -150,7 +155,7 @@ fn wheel(cx: &mut TestAppContext) -> (gpui::Entity<Wheel>, &mut VisualTestContex
         enters_above: 0,
     });
     settle(cx);
-    cx.update(|window, cx| window.focus(&view.read(cx).before.clone()));
+    cx.update(|window, cx| window.focus(&view.read(cx).before.clone(), cx));
     let at = point(px(300.0), px(300.0));
     cx.simulate_mouse_move(at, None, Modifiers::none());
     cx.simulate_mouse_down(at, MouseButton::Right, Modifiers::none());