"use client"; /** * Typed window-event bus for preview-panel actions. Lets the global * keybinding handler in `routes/_chat.tsx` reach `ChatView`'s URL-aware * arbitration without prop drilling or shared refs. */export type PreviewAction =  | "toggle-panel"  | "refresh"  | "focus-url"  | "zoom-in"  | "zoom-out"  | "reset-zoom"; const EVENT_NAME = "t3code:preview-action"; export function dispatchPreviewAction(action: PreviewAction): void {  if (typeof window === "undefined") return;  window.dispatchEvent(new CustomEvent<PreviewAction>(EVENT_NAME, { detail: action }));} export function subscribePreviewAction(listener: (action: PreviewAction) => void): () => void {  if (typeof window === "undefined") return () => {};  const handler = (event: Event) => {    const detail = (event as CustomEvent<PreviewAction>).detail;    if (typeof detail === "string") listener(detail);  };  window.addEventListener(EVENT_NAME, handler);  return () => window.removeEventListener(EVENT_NAME, handler);}