/**
 * Internal subprocess entry point for workspace preparation.
 * Spawned via fork() by prepare.ts — not a public API.
 *
 * IPC protocol:
 *   Parent → Child:  { type: 'start', options: BuildCodebaseOptions }
 *   Parent → Child:  { type: 'abort' }
 *   Child → Parent:  { type: 'progress', event: ProgressEvent }
 *   Child → Parent:  { type: 'complete', resultPath: string }
 *   Child → Parent:  { type: 'aborted' }
 *   Child → Parent:  { type: 'error', message: string }
 */
export {};
