v12.3.0

• sync: creates missing remote languages on the fly. A project without any
  languages yet is bootstrapped automatically from the local language folders
  (or --language/--languages), and a language that exists locally but not
  in the project is created too instead of being silently ignored — the server
  decides whether the api-key may (admin keys always; any write-capable key
  while the project still has no content). On rejection sync warns and
  continues; --dry never creates languages.
• migrate: also works on a project without any languages yet (previously both
  sync and migrate failed with a misleading "Project not found" error when the
  project's languages file was empty).
• fix: the "wrong cdnType" hint no longer crashes (or fires) when the other
  endpoint answers with a non-JSON response; the empty-project error now reads
  "Project … not found — or it has no languages yet!" and carries an
  EMPTY_LANGUAGES / WRONG_CDN_TYPE error code for programmatic consumers.