Patch Changes
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2147b86: Add QuiverAI Arrow 2 language models through the Responses API, with provider-local reasoning validation, stateless history replay, and workflow serialization that preserves QuiverAI configuration and behavior.
Add reusable Open Responses transport configuration, response-error metadata extraction for generation and streaming, cache-write accounting, and OpenAI-compatible custom tools. Preserve text, image, and file custom-tool results and complete tool inputs when streaming deltas are omitted.