You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.238,
ImprovementsSection of the release
What
Asking to resume a subagent that is already running, or already mid-resume, throws instead of quietly starting a second copy. Completion, failure and kill each now publish a settled event, flagging whether messages were left stranded.
Details
Failures reading the state a resume needs are classified, so a transient read error surfaces as its own error type rather than a generic failure.
Evidence
is already running or being resumed
Strings lifted out of the shipped bundle, so the claim above can be checked against them.