misc::WebView lays wry 0.57's child WKWebView over the window at its
box, following it from a canvas in prepaint and hiding it out of view;
it loads an address or the owner's HTML, which makes it the HTML
preview. misc::IframeEmbed frames a page under its address with Open
in browser. EmbedCard points to chat::LinkPreviewCard, ShareSheet to
buttons::ShareButton; PrintButton is blocked, gpui 0.2.2 has no print
API.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ZacharyZhang-NYandClaude Opus 5.5
529394e57b