PR #22529 real-environment verification, 2026-11-01 UTC

Baseline: github/main 575579d68ac4bae09f8426a345d4a3eac1e90c67
Separate /home/user/main worktree; vp i; background vp run dev.
Real Chrome + repository Playwright, fresh app-created project/threads, Codex gpt-6.1-sol through local proxy.
Unmodified focused test: 1 passed.
Temporary existing-test observation gate waited for queued run's persisted run.updated(status=starting) after worker.drain(). Original assertion then failed:
  AssertionError: expected [ 'sent' ] to deeply equal [ 'queued', 'sent' ]
Observation-only edit removed. Real app queue-stop-send flow already worked on main.

Exact PR head: 1e1b6c06df03011b8956048ba00c138ef9c49e88
vp i; background vp run dev --home-dir /home/user/t3code/.t3 (no seeded data).
blacksmith-check: vp test run apps/server/src/orchestration-v2/SteeringCompletion.integration.test.ts
  Test Files 1 passed
  Tests 23 passed

Real server event order for pending-stop case (UTC):
00:52:01.077 run 2 created queued, queuePosition=1
00:52:06.568 interrupt requested; run 2 queued, queueHeld=true
00:52:06.596 run 2 queued, queueHeld=false
00:52:06.597 run 3 created queued, queuePosition=2
00:52:06.649 run 1 interrupted
00:52:06.882 run 2 starting
00:52:11.543 Codex: QUEUED_COMPLETE
00:52:11.735 run 2 completed
00:52:12.113 run 3 starting
00:52:15.163 Codex: SENT_COMPLETE
00:52:15.201 run 3 completed

UI created and queued the messages and clicked Stop. To hit the short pending-interrupt window, the plain send was sent immediately after Stop over the actual web client's authenticated WebSocket with the same message.dispatch payload. No provider delays, mocks, fixtures, or synthetic provider events.

Nearby real-provider checks:
- Ordinary UI steering: message entered active run 1 at 00:52:42.777; Codex returned STEER_COMPLETE at 00:53:07.981; no extra run created.
- Stop without send: queueHeld=true at 00:53:34.616; remained queued after active turn interrupted. UI Send now released hold at 00:53:44.369; Codex returned HELD_COMPLETE at 00:53:47.146.

No source fixes or pushes. CI snapshot: 32/32 successful.
Not verified: native desktop/mobile, other providers, remote/relay/tunnel modes. This PR changes test synchronization only; the UI has no visual behavior delta.