fix(desktop): retire demo IPC requests before teardown

[luokerenx4]

Problem and behavior

Closes #1688.

On the latest dev base (82226d43), demo before-quit killed the fixture child while app-protocol requests could still send IPC. The callback correctly surfaced EPIPE, but Electron then reported that rejection during otherwise successful smoke teardown. #1685 repaired a separate destroyed-window error; the issue has no comments and no existing IPC teardown repair was found.

Retire the fixture's web-request source before killing it. Pending and subsequent requests return unavailable (503), including requests still reading their body. Request abort also completes promptly. Late replies/send callbacks cannot revive cancelled work. Live-source send errors and timeouts still reject; unexpected fixture exit is logged and exits nonzero.

Following the subtraction principle, the existing pending-request map remains the single owner: settlement now centralizes timer/listener/map cleanup instead of duplicating it across response, send-error and cancellation branches. The only new source state is a weak closed-source marker: child.connected cannot express intentional retirement before kill or prevent a delayed body reader from dispatching. Demo teardown has one idempotent owner. No catch-all EPIPE suppression, parallel transport, packaged smoke runner, production main, broker or persisted-state change.

Verification

All local validation used disposable HOME, OPENALICE_HOME, global/Supervisor and Pi paths under /tmp/oa1688; no real broker, SSH or native user state.

Passed:

• pnpm test:owner:desktop --receipt /tmp/oa1688/desktop-final.json: 26 files / 130 assertions, including seven focused lifecycle regressions (source isolation/late callbacks, body-read cancellation, request abort, unexpected synchronous/callback errors, timeout).
• pnpm -F @traderalice/desktop typecheck.
• pnpm test:contract:workflow: 12 files / 104 assertions.
• LOCAL_GIT_DIRECTORY=/usr GIT_EXEC_PATH=/usr/lib/git-core pnpm test:critical --receipt /tmp/oa1688/critical-system-git.json: all 18 assertions. This uses dugite's supported system-Git override, not packaged Git acceptance.
• pnpm build; pnpm exec tsc -p tests/tsconfig.json --noEmit.
• Demo shell, UI and fixture-backend build completed via pnpm electron:smoke:demo.

Failed/environment-limited attempts:

• Initial frozen install failed downloading dugite with ECONNREFUSED. Installed dependency sources with --ignore-scripts; downloaded Electron successfully using the environment proxy.
• Initial desktop suite: 127 assertions passed, one suite could not load without Electron. After installation, the full owner suite above passed.
• Initial critical gate: five assertions failed because bundled dugite Git was absent (ENOENT); supported system-Git rerun passed as recorded above.
• Native demo launch aborted before running smoke assertions: Chromium reports incorrectly configured SUID sandbox helper. The Linux container also has no DISPLAY/Xvfb. Native stderr-clean quit on macOS arm64, other native platforms and unsigned package acceptance remain unverified. No signing/release verification attempted.

Full monorepo tests were not selected: the runtime change remains within the desktop owner; its complete suite, owner types and existing dev required gates were selected. Draft for human review; do not merge automatically. Exact-head remote CI completed successfully: clean-build run 36929441448 on e88a50e93acaee251ff2ebacda79b1c6ee632096 passed dependency install, workflow contracts, required critical evidence, complete workspace build and registered-suite typecheck. All reported PR checks are terminal/success. This does not replace the unrun native smoke assertions.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
openalice-demo	Ready	Preview	Oct 1, 2026 9:33pm UTC