---
model: openai/gpt-5.6-sol
service: opencode
session: unavailable
timestamp: 2026-08-13T20:24:02Z
git_ref: 12b0d66e
scope: code
substantive: true
raw_file: 20260813T202402Z_12b0d66e_prompt_io.raw.md
---

## Prompt

Continue the paired piker broadcast-consumer work after Tractor PR 490
stabilization. Stop cached feed callers from mutating or consuming shared
quote-stream roots, then review, verify and prepare a commit boundary.

## Response summary

Made provider root streams private to the cached `Feed`, gave every caller a
local subscribed view, corrected feed cache identity, and made multi-provider
relays own synchronized child subscriptions and independent send-channel
clones.

## Files changed

- `piker/data/feed.py` - caller-local feed views, complete cache keys, and
  subscribed multi-provider relays with independent channel lifetimes.
- `tests/test_feed_broadcast.py` - real broadcast ownership, lifecycle and
  cache-identity regressions, including sibling survival after provider EOC.

## Human edits

None - generated output follows the requested cached-feed ownership item.