fix: extend the watchdog for transcript-observed subagents - #395
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Third of the agent-state detection faults found on ub1. The first two shipped in #389.
Problem
A Claude pane whose subagents are only visible in the transcript (no hook
authority, no closing report) fell back to the 20-minute parent budget
AGENT_BUSY_STALE_SILENCE. So the parent flipped tosupervisor_stalewhileits subagent was still writing to
agent-*.jsonl, and the sidebar dropped itback to
done.Change
agent_status_watchdog_deadline_with_activity()now grants the longDEFAULT_SUBAGENT_STALE_SILENCEbudget when the pane holds live subagents andthe transcript witness is
Fresh, independent of hook authority. The clockanchors on the later of the witness time and pane activity, so fresh evidence
extends the budget but never rewinds it.
StaleandUnknowntranscripts keep the ordinary budget unchanged.Verification
cargo nextest run -E 'test(/detect::manifest|terminal::state/)'— 275 passedon the merged head. Three new tests cover the fresh, stale, and
never-rewind cases; no existing expectation was modified.
refs #389
https://claude.ai/code/session_01VWN7qDGntr6KuwPKn8Fi5g