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>

src/generative/tests/canvas.rs

@@ -125,7 +125,7 @@ fn undo_waits_for_a_stroke(cx: &mut TestAppContext) {
         cx.notify();
     });
     settle(cx);
-    cx.update(|window, _| window.blur());
+    cx.update(|window, cx| window.blur(cx));
     tab(4, cx);
     press("enter", cx);
     assert_eq!(

src/generative/tests/data.rs

@@ -192,7 +192,7 @@ fn run_waits_for_every_value_then_sends_the_filled_prompt(cx: &mut TestAppContex
     press("enter", cx);
     let ran = |cx: &mut VisualTestContext| view.read_with(cx, |view, _| view.ran.clone());
     assert!(ran(cx).is_empty(), "with tone blank, Run is out of reach");
-    cx.update(|window, _| window.blur());
+    cx.update(|window, cx| window.blur(cx));
     tab(3, cx);
     cx.simulate_input("calm");
     settle(cx);
@@ -259,7 +259,7 @@ fn a_version_is_chosen_by_keys_and_only_an_older_one_restores(cx: &mut TestAppCo
     tab(4, cx);
     press("enter", cx);
     assert_eq!(heard(cx), (vec![], vec![]), "the newest offers no Restore");
-    cx.update(|window, _| window.blur());
+    cx.update(|window, cx| window.blur(cx));
     tab(2, cx);
     press("enter", cx);
     tab(2, cx);

src/generative/tests/mod.rs

@@ -27,7 +27,7 @@ fn press(key: &str, cx: &mut VisualTestContext) {
 
 fn tab(times: usize, cx: &mut VisualTestContext) {
     for _ in 0..times {
-        cx.update(|window, _| window.focus_next());
+        cx.update(|window, cx| window.focus_next(cx));
     }
 }