Add cache_write_tokens and cache_read_tokens to Anthropic prompt token details

[sestinj]

Summary by cubic

Add cache_write_tokens and cache_read_tokens to Anthropic prompt_tokens_details so clients can see cache creation vs read usage in prompt token metrics. Keeps existing cached_tokens behavior for backward compatibility.

• New Features
  • prompt_tokens_details.cache_write_tokens maps to usage.cache_creation_input_tokens
  • prompt_tokens_details.cache_read_tokens maps to usage.cache_read_input_tokens
  • prompt_tokens_details.cached_tokens still maps to read tokens

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• PR Add cache_write_tokens and cache_read_tokens to Anthropic prompt token details #8511

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---

[sestinj]

🎉 This PR is included in version 1.28.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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[cubic-dev-ai]

No issues found across 1 file

[sestinj]

🎉 This PR is included in version 1.32.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀