docs(assets): correct the icon bundle docs

[kirillDevPro]

What was stale

crates/moon-ui-components-assets/README.md still called this crate the default asset bundle for Longbridge GPUI Component. The crate docs said WASM icons are downloaded from a CDN with web_sys::Request, and linked IconName at docs.rs for the upstream gpui-component crate.

What the code does

The package is moon-ui-components-assets (Rust library gpui_component_assets; the workspace depends on it as gpui-component-assets). moon-ui re-exports Assets as MoonAssets. build.rs publishes assets/icons through the Cargo links key gpui-component-default-icons, and moon-ui-components generates IconName from DEP_GPUI_COMPONENT_DEFAULT_ICONS_ICONS_DIR.

Native Assets embeds assets/icons/**/*.svg with RustEmbed. It is a unit struct, and Assets::new ignores its endpoint. On wasm, Assets::new only stores the endpoint. load fetches a path with reqwest from {endpoint}/assets/{path} when the path starts with icons/ and ends with .svg, and caches the bytes. Until that download finishes, load returns an error. The sprite atlas does not store that failure, so a later paint calls load again.

Review

A clean-context pass disputed one README sentence that said Assets::new(endpoint) performs the download. Assets::new only stores the endpoint (wasm_assets.rs). That sentence now attributes the download to load. Nothing else was disputed, and the disputed wording was not left in the diff.

How verified

Checked against native_assets.rs, wasm_assets.rs, both build.rs files, icon.rs, paint_svg, render_alpha_mask, and PlatformAtlas::get_or_insert_with on the DirectX, Metal, and wgpu atlases. cargo fmt --all changed no other files. The example is rust,no_run, and this crate sets doctest = false.