PR 32476 real development verification, 2026-11-15 UTC
main: 14a60e85e5 (github/main fetched this run)
PR: b9c3104d8272f5c35cb402bad8fea6cf777b2b10

Both revisions installed with: timeout 600 vp i
One development server at a time, isolated T3 homes, no seeded data.
Browser: repository Playwright 1.64.1 + /usr/bin/google-chrome.
Project /home/user/main and all threads were created through the web app.
Copilot CLI 1.0.112 installed through Settings > Providers > ACP Registry.
Real Copilot ACP used gpt-6.1-sol through the VM proxy with its supported
BYOK OpenAI responses configuration. No mock provider or injected events.

MAIN
Background native explore task launched, parent replied BACKGROUND_LAUNCHED.
Captured Copilot runtime PID 44010, cwd /home/user/main.
$ timeout 30 kill -TERM 44010
Process exited. Child UI still showed Working for 55s and parent Waiting.
Persisted events: running at 04:51:51.874Z and 04:51:51.897Z;
no interrupted event after runtime termination.
The later cancelled event at 04:53:09.445Z was server shutdown cleanup.
Main dev process group 24724 stopped before PR dev server started.

PR
Background native explore task launched and ran an actual sleep 300 subprocess.
Parent replied BACKGROUND_LAUNCHED.
Captured Copilot runtime PID 54204, cwd /home/user/main.
$ timeout 30 kill -TERM 54204
Child UI changed from Working to Interrupted, parent left Waiting.
Persisted subagent events:
04:57:30.836Z running
04:57:30.862Z running
04:57:52.072Z interrupted
Exactly one interrupted event for the retired child.

REPLACEMENT AND NORMAL COMPLETION
Sent another prompt in the same parent after the runtime crash.
Fresh Copilot runtime replied REPLACEMENT_PARENT_OK in the parent.
New native task Read package name verification:
04:58:50.301Z running
04:58:50.345Z running
04:58:55.333Z completed
Old child remained interrupted; new child UI showed Completed in 5s.

NATIVE CODEX NEIGHBOR
Selected native Codex GPT-6.1-Sol in a new thread through the model picker.
Asked for a read-only shell command reading package.json.
Real shell tool completed and parent replied CODEX_PROVIDER_OK with package name.

CHECKS
Blacksmith: both existing AcpAdapterV2 and AcpRegistryAdapterV2 suites passed:
2 files, 162 tests passed. No repository source or test files changed.
CI head snapshot: 32 successful, 0 failing, 0 pending.

NOT EXERCISED LIVE
Rollback, active-prompt runtime death, approval-left-open restart,
detached root-command preservation, and delayed callback attribution.
Those paths have existing regression coverage; this transcript does not
claim that mocks prove live provider behavior.
GitHub-hosted Copilot inference/login, other ACP flavors, native desktop,
native mobile, remote relay/tunnel, macOS, and Windows were not exercised.