Function cleanupSingleDirectory

src/utils/cleanup.ts:266–298

* Generic helper for cleaning up old files in a single directory * @param dirPath Path to the directory to clean * @param extension File extension to filter (e.g., '.md', '.jsonl') * @param removeEmptyDir Whether to remove the directory if empty after cleanup

(
  dirPath: string,
  extension: string,
  removeEmptyDir: boolean = true,
)

 * @param removeEmptyDir Whether to remove the directory if empty after cleanup
 */
async function cleanupSingleDirectory(
  dirPath: string,
  extension: string,
  removeEmptyDir: boolean = true,
): Promise<CleanupResult> {
  const cutoffDate = getCutoffDate()
  const result: CleanupResult = { messages: 0, errors: 0 }
  const fsImpl = getFsImplementation()

  let dirents
  try {
    dirents = await fsImpl.readdir(dirPath)
  } catch {
    return result
  }

  for (const dirent of dirents) {
    if (!dirent.isFile() || !dirent.name.endsWith(extension)) continue
    try {
      if (await unlinkIfOld(join(dirPath, dirent.name), cutoffDate, fsImpl)) {
        result.messages++
      }
    } catch {
      result.errors++
    }
  }

  if (removeEmptyDir) {
    await tryRmdir(dirPath, fsImpl)
  }

  return result
}

export function cleanupOldPlanFiles(): Promise<CleanupResult> {
  const plansDir = join(getClaudeConfigHomeDir(), 'plans')