---
model: openai/gpt-5.6-sol
service: opencode
session: pr481-review-fixes-p1-20260818
timestamp: 2026-08-18T03:15:32Z
git_ref: 4151b956
scope: code
substantive: true
raw_file: 20260818T031532Z_4151b956_prompt_io.raw.md
---

## Prompt

Address the approved review findings on PR #481, but work
iteratively: implement and verify one finding at a time, prepare a
separate `/commit-plan` after each fix, and stop for the human commit
before starting the next finding. Begin with the P1 per-child
lifecycle issue. Also publish the already-approved review findings
against the reviewed PR head before editing.

## Response summary

Published the approved non-approving review at head `4151b956`, then
implemented only the P1 lifecycle fix. Owned one-shot actors now use
a child-specific cancellation and process-reap handshake, including
hard escalation for unacknowledged cancellation and deterministic
bookkeeping removal before `to_actor.run()` returns.

## Files changed

- `tractor/runtime/_supervise.py` - coordinate child-specific cancel
  and reap.
- `tractor/spawn/_trio.py` - wait on the Trio child's reap request.
- `tractor/spawn/_mp.py` - wait on the multiprocessing child's reap
  request.
- `tractor/spawn/_spawn.py` - publish monitor completion centrally.
- `tractor/to_actor/_api.py` - await owned-child process reaping.
- `tests/test_to_actor.py` - cover cleanup, escalation, and startup
  ordering.

## Human edits

None - the generated P1 patch remains uncommitted for human review.