---
model: claude-fable-5[1m]
service: claude
session: 32d15f9a-b2d3-4c26-bdc9-190219141a25
timestamp: 2026-06-10T17:12:26Z
git_ref: datad_service
diff_cmd: git log -1 -p --follow -- ai/prompt-io/claude/20260610T171226Z_64181219_prompt_io.md
scope: code
substantive: true
raw_file: 20260610T171226Z_64181219_prompt_io.raw.md
---

## Prompt

Same session-initiating `brokerd`-split instruction (see
`20260610T170859Z_75cefe10_prompt_io.md`); this is the
approved plan's "stage 2": decouple the clearing layer
from `feed.portals` BEFORE the feed cutover so live
trading works at every stage boundary. User-decided
constraint applied: post-split `brokerd` is
trading-only and spawned LAZILY only by `emsd`'s
`open_brokerd_dialog()` path.

## Response summary

Kill the single coupling forcing feed + trading eps
into one actor (`Router.open_trade_relays()` pulling
its trades portal from `feed.portals[brokermod]`):
`open_brokerd_dialog()` now (maybe) spawns/finds
`brokerd.<broker>` itself and ONLY when a live
trades-ep will actually open; paper mode never touches
it. Pre-cutover this is a pure refactor (registry
lookup finds the same feed-spawned daemon).

## Files changed

- `piker/clearing/_ems.py` — `open_brokerd_dialog()`
  re-sig + inner `acquire_live_portal()`;
  `Router.maybe_open_brokerd_dialog()` drops `portal`
  param; `open_trade_relays()` drops the
  `feed.portals` lookup
- `piker/accounting/cli.py` — keyword-form `portal=`
  override kept for the `piker ledger` ad-hoc actor

## Human edits

None — committed as generated.