fix(llmobs): openai-java payload mapping for responses, tool metadata, and prompt tracking#10644

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ygree wants to merge 29 commits intomasterfrom

ygree/llmobs-systest-fixes

Commits on Feb 24, 2026

llmobs: set model tag even when llmobs disabled
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Commits on Mar 3, 2026

Commits on Mar 5, 2026

Always set stream param to produce the same request body to be aligned with python openai instrumentation and system-tests
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Add OpenAI prompt-tracking reconstruction for responses (input.prompt with variables + chat_template, longest-first overlap handling) and support map-based LLM input serialization (messages + promp…
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Fix OpenAI Responses prompt tracking to use response instructions first and return [image] (not empty) when stripped input_image URLs are missing, aligning mixed-input chat_template output with exp…
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Set LLMObs error-path defaults in Java to always emit model_name and output.messages from request params so existing error-span tests pass.
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Add OpenAI Responses tool definition extraction to populate LLMObs tool_definitions tags
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Fix ChatCompletionServiceTest
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Extract JsonValueUtils
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Refactor OpenAI responses instrumentation to reuse ToolCallExtractor JSON argument parsing and remove duplicate manual parsing logic from ResponseDecorator.
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Fix test assertions
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Commits on Mar 6, 2026