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/forms/tests/mod.rs

@@ -69,7 +69,7 @@ fn text(field: &Entity<TextInput>, cx: &mut VisualTestContext) -> String {
 }
 
 fn focus(field: &Entity<TextInput>, cx: &mut VisualTestContext) {
-    cx.update(|window, cx| window.focus(&field.read(cx).focus().clone()));
+    cx.update(|window, cx| window.focus(&field.read(cx).focus().clone(), cx));
 }
 
 #[gpui::test]
@@ -80,7 +80,7 @@ fn tab_reaches_fields_and_skips_disabled_ones(cx: &mut TestAppContext) {
     let mut order = Vec::new();
     for _ in 0..2 {
         order.push(cx.update(|window, cx| {
-            window.focus_next();
+            window.focus_next(cx);
             fields
                 .iter()
                 .position(|field| field.read(cx).focus().is_focused(window))
@@ -96,9 +96,9 @@ fn enter_on_a_clear_button_clears_its_own_field(cx: &mut TestAppContext) {
         field.update(cx, |input, cx| input.set_text("kept", cx));
     }
     cx.run_until_parked();
-    cx.update(|window, _| {
-        window.focus_next();
-        window.focus_next();
+    cx.update(|window, cx| {
+        window.focus_next(cx);
+        window.focus_next(cx);
     });
     cx.run_until_parked();
     cx.simulate_keystrokes("enter");
@@ -177,7 +177,7 @@ impl Render for Stepped {
 fn stepping_starts_from_the_typed_number(cx: &mut TestAppContext) {
     setup(cx);
     let (view, cx) = cx.add_window_view(|_, _| Stepped { value: 4.0 });
-    cx.update(|window, _| window.focus_next());
+    cx.update(|window, cx| window.focus_next(cx));
     cx.simulate_keystrokes("cmd-a");
     cx.simulate_input("20");
     cx.simulate_keystrokes("up");
@@ -188,7 +188,7 @@ fn stepping_starts_from_the_typed_number(cx: &mut TestAppContext) {
 fn a_typed_number_reaches_the_owner_before_any_blur(cx: &mut TestAppContext) {
     setup(cx);
     let (view, cx) = cx.add_window_view(|_, _| Stepped { value: 100.0 });
-    cx.update(|window, _| window.focus_next());
+    cx.update(|window, cx| window.focus_next(cx));
     cx.simulate_keystrokes("cmd-a");
     cx.simulate_input("250");
     assert_eq!(
@@ -224,7 +224,7 @@ fn select_all_then_typing_replaces_the_pin(cx: &mut TestAppContext) {
     let (view, cx) = cx.add_window_view(|_, _| Pin {
         code: String::new(),
     });
-    cx.update(|window, _| window.focus_next());
+    cx.update(|window, cx| window.focus_next(cx));
     cx.simulate_input("4821");
     cx.simulate_keystrokes("cmd-a");
     cx.simulate_input("1234");