---
model: openai/gpt-5.6-sol
service: opencode
session: unavailable
timestamp: 2026-08-13T23:07:44Z
git_ref: ddac3553
scope: code
substantive: true
raw_file: 20260813T230744Z_ddac3553_prompt_io.raw.md
---

## Prompt

Continue the piker broadcast-consumer audit after the Deribit ownership commit
and prepare the next smallest ownership fix.

## Response summary

Replaced IB's manual raw quote-channel registry with a symbol-keyed cached
context and gave every caller a lexical child from one retained
`LinkedTaskChannel` broadcaster root.

## Files changed

- `piker/brokers/ib/feed.py` - cached raw-channel lifetime and lexical child
  ownership.
- `tests/test_ib_broadcast.py` - concurrent fan-out, cache-key and child
  lifetime regression.

## Human edits

None - generated output follows the requested broadcast-consumer audit.