Fix: Handle background_requested pause results in Claude session manager#897
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- Filter intermediate background_requested results to prevent premature turn termination - Record usage for paused tasks but keep pause results out of the pipeline - Add regression tests for backgrounded subagent resume flow (#891)
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closes #891
Summary
Fix for issue #891: Claude turns were ending prematurely when a subagent was moved to the background. The main agent now stays paused and resumes once the background task completes.
Changes
background_requestedintermediate results. These pause results are no longer treated as terminal — usage is recorded but the results stay out of the pipeline, allowing the SDK to resume the same query viatask_notification.Details
When the Claude SDK moves a task to the background, it emits an intermediate
resultwithterminal_reason === "background_requested". The old code treated ANYresultas terminal, which firedendand tore down the session — so the latertask_notificationresumption was lost.The fix filters these pause results before passthrough to the pipeline, preventing premature turn termination while still recording context usage. The event loop continues draining until the genuinely terminal result arrives.
Test Plan
background-resume.test.tsvalidate the pause-and-resume flow