usage: tautline migrate-adapter [-h] [--adopter-target ADOPTER_TARGET]
                                [--dry-run] [--write]
                                adapter

positional arguments:
  adapter               Adapter JSON to migrate.

options:
  -h, --help            show this help message and exit
  --adopter-target ADOPTER_TARGET
                        Write migrated adapter to
                        <repo>/.tautline/adapter.json.
  --dry-run             Preview without writing (default).
  --write               Write the migrated adapter after validation.
