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/media/player.rs

@@ -154,15 +154,17 @@ fn wake(watch: &Entity<Watch>, window: &mut Window, cx: &mut App) {
             loop {
                 let wait = watch.read_with(cx, |watch, cx| {
                     IDLE.saturating_sub(cx.background_executor().now().duration_since(watch.moved))
-                })?;
+                });
                 if wait.is_zero() {
                     break;
                 }
                 cx.background_executor().timer(wait).await;
             }
-            watch.update(cx, |watch, cx| {
-                watch.waking = false;
-                cx.notify();
+            cx.update(|_, cx| {
+                watch.update(cx, |watch, cx| {
+                    watch.waking = false;
+                    cx.notify();
+                })
             })
         })
         .detach_and_log_err(cx);