Function gitWorktreeRoot

src/sync/worktree.ts:32–44

(dir: string)

 * is exactly the distinction this module relies on.
 */
export function gitWorktreeRoot(dir: string): string | null {
  try {
    const out = execFileSync('git', ['rev-parse', '--show-toplevel'], {
      cwd: dir,
      encoding: 'utf8',
      stdio: ['ignore', 'pipe', 'ignore'],
      windowsHide: true,
    }).trim();
    return out ? realpath(out) : null;
  } catch {
    return null;
  }
}

/**
 * Absolute, symlink-resolved git **common** directory for `dir` — the shared