- Added support for tool calls in NormalizedFinalResponse type.
- Implemented functions to collect and serialize tool calls from OpenAI and Claude responses.
- Updated convertClaudeRequestToOpenAiBody to handle tool use and tool result messages.
- Enhanced normalizeUpstreamFinalResponse to include tool calls in the response structure.
- Introduced utility functions for safe JSON stringification and parsing.
- Improved conversion functions for OpenAI tools to Anthropic format and vice versa.
- Updated input handling in convertOpenAiBodyToMessagesBody and convertOpenAiBodyToResponsesBody to accommodate tool messages.
- Refactored serialization logic in serializeFinalResponse and buildSyntheticOpenAiChunks to include tool calls.
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