Changes in version 0.1.0                        

  - Initial release.
  - Core functions: create_clinical_chat(), clinical_tools(),
    run_clinchat_app().
  - Privacy-focused tools for dataset summarization, column description,
    counting, and grouped summaries.
  - Shiny integration via shinychat.
  - Basic unit tests with testthat.
  - Examples use \donttest{} where an API key is required (per CRAN
    guidance).