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.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

examples/gallery/main.rs

@@ -22,8 +22,8 @@ use std::path::PathBuf;
 use anyhow::{Context as _, Result, bail};
 use ely_gpui_component::Assets;
 use gpui::{
-    App, AppContext, Application, Bounds, KeyBinding, Menu, MenuItem, TitlebarOptions,
-    WindowBounds, WindowHandle, WindowOptions, actions, point, px, size,
+    App, AppContext, Bounds, KeyBinding, Menu, MenuItem, TitlebarOptions, WindowBounds,
+    WindowHandle, WindowOptions, actions, point, px, size,
 };
 
 actions!(gallery, [Quit, About, LightMode, DarkMode, NewWindow]);
@@ -38,6 +38,7 @@ fn menus(cx: &mut App) {
                 MenuItem::separator(),
                 MenuItem::action("Quit Ely", Quit),
             ],
+            disabled: false,
         },
         Menu {
             name: "View".into(),
@@ -45,6 +46,7 @@ fn menus(cx: &mut App) {
                 MenuItem::action("Light", LightMode),
                 MenuItem::action("Dark", DarkMode),
             ],
+            disabled: false,
         },
     ]);
     cx.set_dock_menu(vec![MenuItem::action("New Window", NewWindow)]);
@@ -103,7 +105,7 @@ fn parse_args() -> Result<Args> {
 fn main() -> Result<()> {
     env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
     let args = parse_args()?;
-    Application::new()
+    gpui_platform::application()
         .with_assets(Assets)
         .run(move |cx: &mut App| {
             ely_gpui_component::init(cx);
@@ -123,6 +125,8 @@ fn main() -> Result<()> {
                     traffic_light_position: Some(point(px(16.0), px(18.0))),
                 }),
                 window_min_size: Some(size(px(880.0), px(560.0))),
+                // Draws every frame while a demo window is key, as gpui 0.2.2 did.
+                inactive_frame_interval: None,
                 ..Default::default()
             };
             let window = cx