Expand description
Cocoon → Mountain webview.postMessage notification.
Emitted by Cocoon/.../Services/Window/WebviewPanel.ts:125 when an
extension calls WebviewPanel.webview.postMessage(...). Stock VS
Code delivers this as a DOM message event inside the webview
iframe; in Land we emit on sky://webview/postMessage and let the
Sky bridge relay into the specific webview DOM container keyed on
{ handle, message }.