Summary

This PR fixes how reasoning tokens are streamed for specific OpenAI models (`gpt-5-mini` and `gpt-5-nano`). It updates type definitions, adds a handler for streaming summary text, and includes corresponding test and documentation updates.

Changes

Impact Areas

Files Changed

• packages/typescript/ai-openai/src/model-meta.ts
• packages/typescript/ai-openai/src/openai-adapter.ts
• src/packages/openai/model-meta.test.ts
• docs/adapters/openai.md