PR #29007 verification, 2026-11-10, Linux Boat VM
GitCafe: https://git.cafe/pingdotgg/t3code/pulls/29007
Main baseline: d1909d68f8a8864d13fcb214c116777a651e6684
PR exact head: b7067ba4a31fe82a24ce22895d90e42be7d74c35

Setup:
  git worktree add ../main github/main
  cd ../main && timeout 600 vp i
  setsid nohup timeout 7000 vp run dev > /tmp/main-dev.log 2>&1 &
  [dev-runner] serverPort=16733 webPort=8693 baseDir=/home/user/main/.t3
  Main stopped by captured process group 26259 before PR startup.
  git switch -c issue-watch/28873 github/issue-watch/28873
  timeout 600 vp i
  setsid nohup timeout 6400 vp run dev --home-dir /home/user/t3code/.t3
  [dev-runner] serverPort=13773 webPort=5733 baseDir=/home/user/t3code/.t3
  PR migration 81_SubagentExecutionRunIndex applied successfully.
  An initial root-checkout launch selected the default T3 home; it was stopped
  and replaced with the explicit isolated home above. No verification used it.

Real app path, no mocks, fixtures, replay, or direct database writes:
  Playwright 1.60.0 from repository dependencies, /usr/bin/google-chrome.
  Created /home/user/lineage-verification as a real git repository.
  Added that folder through Add project > Local folder in each app.
  Selected Codex GPT-6.1-Sol in the composer and submitted the same prompt.
  Root used native spawn_agent; native caller used T3 delegate_task.
  Both runs returned LEAF_OK, NATIVE_OK, ROOT_OK.

Main:
  DELEGATED_LEAF parent header: Subagent of Verify Native Delegation Lineage
  Leaf incorrectly belongs to root, not native caller.
PR:
  DELEGATED_LEAF parent header: Subagent of Native Caller
  Clicked root Lineage > Native Caller > DELEGATED_LEAF; clicked both parent
  headers to return to root. Reload retained the correct parent.
  Read-only SQLite projection: leaf.thread_id = native child thread;
  leaf.executionThreadId = root f03541fb-bc3f-4d33-990e-808b5b8b9d1f.
  Leaf and native task status = completed.

Neighbor checks through composer, same real Codex provider:
  A later root turn called task_status for its native caller's delegated leaf.
  Root confirmed LEAF_OK and returned STATUS_OK.
  Direct root delegate_task DIRECT_ROOT_LEAF completed with DIRECT_OK.
  Direct root task has no executionThreadId override, status completed.

Root Stop through actual web button:
  Native stop_caller delegated STOP_LEAF asynchronously.
  Leaf ran timeout 240 bash -c 'echo WORKLOAD_PID=$BASHPID; exec sleep 240'.
  Observed timeout PID 40022 and sleep PID 40023 while leaf was running.
  Native caller completed before leaf; root still showed Working.
  Clicked root Stop generation at 2026-11-10T04:28:48.605Z.
  UI: Run interrupted, Stopped by user.
  ps -p 40022,40023 showed no remaining processes, well before 240 seconds.
  Read-only projection: STOP_LEAF = interrupted.
  Read-only production outbox:
    provider-turn.interrupt | succeeded | attempt 1 | 04:28:48.819Z
    delegated-tasks.stop    | succeeded | attempt 1 | 04:28:48.981Z
    provider-turn.interrupt | succeeded | attempt 1 | 04:28:49.251Z

Remote Blacksmith check command:
  vp i && vp test run apps/server/src/mcp/NativeSubagentDelegation.integration.test.ts packages/provider-core/src/server/McpProviderSessions.test.ts apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts apps/server/src/orchestration-v2/DelegatedCompletionDelivery.test.ts
  Test Files: 4 passed (4)
  Tests: 215 passed (215)
  Duration: 20.62s
GitHub checks on exact head: 23 pass, 9 skipping, zero pending/failing.
No source changes, commits, pushes, labels, merge, or rebase.

Unverified:
  Live Claude-specific nesting/delegation, other providers, live cross-environment
  delegation, remote Stop and mode ceilings, lowered-mode live launches,
  compaction/restart combinations, mobile, Electron, macOS/Windows, Connect,
  packaged releases, production-scale performance. Required live provider was
  Codex on Linux; these require additional environments/providers or scenarios.