---
model: openai/gpt-5.6-sol
service: opencode
session: d9d7df2c-7044-463f-8768-ec024718eac9
timestamp: 2026-08-24T22:20:33Z
git_ref: ce38cb6f
scope: code
substantive: true
raw_file: 20260824T222033Z_ce38cb6f_prompt_io.raw.md
---

## Prompt

Continue the PR #481 review after triage. The human explicitly accepted
the proposed merge-blocking `Context.cancel()` deadline update with
"keep" and required the work to remain limited to that review item.

## Response summary

Update `Context.cancel()` so one absolute deadline bounds both shielded
cancel-request publication and acknowledgement waiting. Add a focused
mocked-clock regression for the blocked-publication failure mode and run
the narrow cancellation tests.

## Files changed

- `tractor/_context.py` - forward the cancel transaction's absolute
  deadline to frame publication.
- `tests/test_to_actor.py` - prove blocked context-cancel publication is
  bounded by the shared deadline.

## Human edits

The human retained ownership of review scope and explicitly selected
"keep" for this item after receiving keep/defer/drop options. The human
required no unrelated cancellation changes and did not directly edit
source lines.