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/feedback/toast.rs

@@ -4,10 +4,10 @@ use std::{
 };
 
 use gpui::{
-    Animation, AnimationExt, AnyElement, App, ClickEvent, Context, Corner, ElementId, Entity,
-    FontWeight, InteractiveElement, IntoElement, ParentElement, Pixels, RenderOnce, SharedString,
-    StatefulInteractiveElement, Styled, Task, Window, anchored, canvas, div, point, prelude::*,
-    relative,
+    Anchor, Animation, AnimationExt, AnyElement, App, ClickEvent, Context, ElementId, Entity,
+    FontWeight, HoverListenerMode, InteractiveElement, IntoElement, ParentElement, Pixels,
+    RenderOnce, SharedString, StatefulInteractiveElement, Styled, Task, Window, anchored, canvas,
+    div, point, prelude::*, relative,
 };
 
 use crate::{
@@ -230,6 +230,7 @@ impl RenderOnce for ToastViewport {
             .flex()
             .flex_col()
             .w(width)
+            .hover_listener_mode(HoverListenerMode::InputModalityIndependent)
             .on_hover(move |hovered, _, cx| {
                 hold.update(cx, |toaster, cx| toaster.hold(*hovered, cx))
             })
@@ -238,7 +239,7 @@ impl RenderOnce for ToastViewport {
             (self.id, "raised"),
             anchored()
                 .position(point(viewport.width - margin, viewport.height - margin))
-                .anchor(Corner::BottomRight)
+                .anchor(Anchor::BottomRight)
                 .child(stack),
         )
         .with_priority(1)