T44d Web · What a browser cannot do says why; fonts resolve; the bundle builds

Demos that open a second window, take files, move the window, read the
clipboard or set native menus show a note on the web in the blocked style.
IBM Plex Sans Regular joins the assets, unmodified, where gpui's svg
renderer loads it: gpui_web answers .SystemUIFont with it. The gallery's
web entry registers a Hebrew cut of Noto Sans Hebrew. scripts/web.sh builds
the bundle with wasm-bindgen and wasm-opt -Oz, 20.0 MB, and fails past 25 MiB.

examples/gallery/pages/shell/chrome.rs

@@ -7,7 +7,7 @@ use ely_gpui_component::{
 };
 use gpui::{App, Div, IntoElement, ParentElement, Styled, Window, div, px};
 
-use crate::ui::{code, row, section, specimen, specimens};
+use crate::ui::{code, row, section, specimen, specimens, web_note};
 
 /// A window drawn inside the page.
 pub fn window_frame(width: f32, height: f32, cx: &App) -> Div {
@@ -116,6 +116,10 @@ pub fn window_controls(cx: &App) -> impl IntoElement + use<> {
         "Minimize and zoom act on this window. Close here only logs.",
         cx,
     ))
+    .children(web_note(
+        "A browser owns the page's window: gpui on the web only logs minimize and zoom.",
+        cx,
+    ))
 }
 
 pub fn drag_area(window: &mut Window, cx: &mut App) -> impl IntoElement + use<> {
@@ -142,6 +146,10 @@ pub fn drag_area(window: &mut Window, cx: &mut App) -> impl IntoElement + use<>
             .child("Double-click to zoom this window"),
     )
     .child(code("drag_region(id, window, cx)", cx))
+    .children(web_note(
+        "A browser owns the page's window: gpui on the web neither moves nor zooms it.",
+        cx,
+    ))
 }
 
 pub fn resize_border(cx: &App) -> impl IntoElement + use<> {
@@ -154,6 +162,10 @@ pub fn resize_border(cx: &App) -> impl IntoElement + use<> {
         "Linux draws its own edges. This macOS window keeps the system's, so the border lays out only.",
     ))
     .child(code("ResizeBorder::new().child(app)", cx))
+    .children(web_note(
+        "A browser sizes the page's canvas itself: gpui on the web resizes no window from its edges.",
+        cx,
+    ))
 }
 
 pub fn menus(cx: &App) -> impl IntoElement + use<> {
@@ -177,4 +189,8 @@ pub fn menus(cx: &App) -> impl IntoElement + use<> {
     .child(Caption::new(
         "MenuBar draws the same menus inside the window. It lands with Menus, chapter 8.",
     ))
+    .children(web_note(
+        "A browser page has no menu bar and no Dock: gpui on the web keeps neither cx.set_menus nor cx.set_dock_menu.",
+        cx,
+    ))
 }