Changes in version 0.0.1.9000                      

  - Adds experimental typed models, messages, credentials, provider
    operations, request translation, and normalized streaming adapters
    inspired by Pi.
  - Adds typed provider input-limit values and exact structured-code
    translation for OpenAI-compatible context limits and Anthropic
    request-size limits.
  - Preserves HTTP retry semantics when OpenAI-compatible status errors
    include a structured provider error body.
  - Collects provider completions through task composition and
    serializes asynchronous credential updates without blocking the R
    event loop.