---
model: openai/gpt-5.6-sol
service: opencode
session: ses_0799212ebffe42arY96czXn89F
timestamp: 2026-08-12T03:06:08Z
git_ref: 1095e7f7
scope: code
substantive: true
raw_file: 20260812T030608Z_1095e7f7_prompt_io.raw.md
---

## Prompt

For Tractor PR 490 item two, make shared underlying receive failures wake and
terminate every broadcast subscriber without losing retained values. Review,
verify and return a complete commit plan before continuing.

## Response summary

Published ordinary receive failures as terminal broadcast state, introduced
a public chained peer exception, kept control-flow exits transient while
waking peers, documented the contract, and added deterministic regressions.

## Files changed

- `tractor/trionics/_broadcast.py` - terminal failure and peer wake protocol.
- `tractor/trionics/__init__.py` - public peer exception export.
- `docs/api/trionics.rst` - failure-delivery API contract.
- `tests/test_task_broadcasting.py` - terminal and transient failure tests.

## Human edits

None - generated output follows the requested second iterative item.