EXAMPLES:

  # Rename a document
  iwe rename old-doc-key new-doc-key

  # Preview changes without writing
  iwe rename old-key new-key --dry-run

  # Rename quietly (no progress output)
  iwe rename old-key new-key --quiet

  # Output affected document keys for scripting
  iwe rename old-key new-key --keys

OUTPUT:

  Default: Progress messages showing rename action and updated documents.

  --dry-run: Shows what would happen without making changes.

  --keys: One affected document key per line (suitable for piping):

    new-key
    referencing-doc-1
    referencing-doc-2
