/**
 * dev.ts — dev server for react-client
 *
 * - prebundles deps into .react-client/deps
 * - serves /@modules/<dep>
 * - serves /src/* with esbuild transform & inline sourcemap
 * - /@source-map returns a snippet for overlay mapping
 * - HMR broadcast via BroadcastManager (ws)
 *
 * Keep this file linted & typed. Avoids manual react-dom/client hacks.
 */
export default function dev(): Promise<void>;