.NET: Fixing issue where OpenTelemetry span is never exported in .NET in-process workflow execution#4196

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alliscode merged 8 commits intomicrosoft:mainfrom

alliscode:investigation/issue-4155-1771877003

Feb 25, 2026

Commits on Feb 23, 2026

1. Add reproduction test for issue #4155: workflow.run Activity never stopped in streaming OffThread path

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Commits on Feb 24, 2026

Add root-level workflow.session activity spanning run loop lifetime\n\nImplements two-level telemetry hierarchy per PR feedback from lokitoth:\n- workflow.session: spans the entire run loop / strea…
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Merge branch 'main' into investigation/issue-4155-1771877003
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Address Copilot review: fix Activity/CTS disposal, rename activity, add error tag\n\n1. LockstepRunEventStream: Remove 'using' from Activity in async iterator\n and manually dispose in finally bl…
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Review fixes: revert workflow_invoke rename, use 'using' for linkedSource, move SessionStarted earlier\n\n- Revert ActivityNames.WorkflowRun back to \"workflow_invoke\" (OTEL semantic convention co…
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Improve naming and comments in WorkflowRunActivityStopTests"
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Commits on Feb 25, 2026