fix(openai): preserve response output content index - #1437
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Use the parent output item's completion index for nested message content so reasoning outputs cannot absorb the following message text. Add coverage with real OpenAI response models.
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📥 Pull Request
📘 Description
Fixes #1436.
OpenAI Responses can return a reasoning output before the assistant message. The message metadata correctly used its index in
response.output, but nestedResponseOutputTextattributes used the index withinmessage.content. This placed message text under the preceding reasoning completion and left the actual message completion without content.This change preserves the parent output index while extracting nested message text. The regression test uses the real OpenAI response models and verifies that a reasoning item at index 0 cannot absorb message content from index 1.
🧪 Testing
.venv/bin/python -m pytest tests/unit/instrumentation/openai_core/test_response_attributes.py -q -o log_cli=false— 14 passed.venv/bin/python -m pytest tests/unit -q -o log_cli=false— 489 passed, 1 skippedgit diff --check— passed