Under the hood
Resuming a subagent now logs diagnostic details about how it's being resumed
What
When Claude Code resumes a subagent (a helper agent handling part of a task), it now records a telemetry event with details about that resume: whether sidecar metadata was found, where the originating prompt came from, whether a task record exists, whether this continues an interrupted turn, whether the resumer is itself a subagent, and whether a newer storage system (storageV5) is active.
Why
This gives more visibility into how and why subagent resumes happen, which can help diagnose problems with resuming interrupted or nested agent work.