Co-Authored-By: Claude Opus 4.6 <[email protected]>

Update the User model's enum validator to accept the new 'Fan' category. The validator and its ValueError message were expanded to include 'Fan' so user.category (or equivalent field) can hold this new account type.

Change pinned_tweet_ids_str to Optional[List[StrictStr]] with default None and apply code style/refactorings: group and parenthesize imports, expand __properties and model_validate dict to multi-line, reformat the created_at regex check, normalize validator string quoting, and simplify excluded_fields initialization. These changes improve readability and allow instances to omit pinned_tweet_ids_str without validation errors; no other behavioral changes intended.

Updated the get_tid function to accept an optional cookies parameter, allowing it to maintain session state for authenticated requests. This change ensures compatibility with the new logged-out web client and improves the handling of transaction IDs. Adjusted the get_twitter_openapi_python_client method to pass cookies when invoked from get_client_from_cookies.