Important

Add GitHub Actions workflow for SDK API spec generation and update dev script in package.json to use --turbo.

• GitHub Actions Workflow:
  • Adds sdk-api-spec.yml to automate SDK API spec generation.
  • Uses fern-api to generate specs and updates Python and TypeScript SDKs.
  • Clones langfuse-python and langfuse-js repos, formats code, and creates PRs if changes are detected.
• Scripts:
  • Updates dev script in package.json to use --turbo flag for faster development builds.

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