feat: Update LangChain runners to implement Runner protocol returning RunnerResult#150
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… RunnerResult - LangChainModelRunner.run() implements the unified Runner protocol; returns RunnerResult with content, metrics (LDAIMetrics), raw, and parsed fields. Structured output is supported via the output_type parameter. - LangChainAgentRunner.run() updated to return RunnerResult; populates tool_calls in LDAIMetrics from observed tool_calls in message responses. - Legacy invoke_model() and invoke_structured_model() retained as deprecated adapters that delegate to run() and wrap results into ModelResponse / StructuredResponse for backward compatibility. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This was referenced Apr 28, 2026
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Summary
LangChainModelRunner.run()implements the unifiedRunnerprotocol; returnsRunnerResultwithcontent,metrics,raw, andparsedfields. Structured output is supported via theoutput_typeparameter.LangChainAgentRunner.run()updated to returnRunnerResult; populatestool_callsinLDAIMetricsfrom observed tool call names in the message response.invoke_model()andinvoke_structured_model()retained as deprecated adapters that delegate torun()for backward compatibility.Stacking
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jb/aic-2388/openai-runner-protocol(PR #149).Test plan
make test-langchain— all 81 LangChain provider tests passmake test— all 261 tests across server-ai, langchain, and openai packages pass🤖 Generated with Claude Code