v2.2.1

Bug Fixes

• fabric: Use import notebookutils instead of getattr(builtins, 'notebookutils') for Fabric environment detection (#157)
  • notebookutils is a regular site-package on the Fabric runtime, not a builtins attribute
  • Previous approach caused is_fabric_environment() to always return False
• provider: Treat OPENAI_API_KEY=place_holder_for_fabric_internal as absent so the library correctly falls through to Azure / Entra ID authentication