Shutdown proof for PR #20303 at4e90a1e36df417b9efc78426b4119284876c3cd0. Linux headless verification; native Electron unavailable, import-only override. Main negative: exit130 instead of cleanup; old pool budget completes before6s. Round1 negative: signal listener absent during acknowledged backend stop. Head passes real SIGTERM READY/STOPPING/CLEANED exit0, slow cleanup and45s bounded wait, listener lifetime/deduplication/cleanup. 33tests consolidated3files->2existing,71including existing updates cases pass. POSIX30s grace; Windows immediate taskkill/T/F unchanged. Native verification and human approval remain required. 20303-tests-main.log note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead. RUN v5.0.1 /home/ubuntu/wt/desktop-app-04/apps/desktop ❯ src/app/DesktopLifecycle.test.ts (6 tests | 1 failed | 5 skipped) 227ms ❯ DesktopLifecycle (6) × leaves SIGTERM to the lifecycle until its graceful shutdown completes 225ms stdout | src/backend/DesktopBackendManager.test.ts > DesktopBackendManager > stopAllPoolInstances allows slow cleanup but bounds hung backends [08:52:02.901] ERROR (#1): Error [AssertionError]: expected { _id: 'Exit', _tag: 'Success', …(1) } to equal undefined at /home/ubuntu/wt/desktop-app-04/apps/desktop/src/backend/DesktopBackendManager.test.ts:1582:16 { actual: { _id: 'Exit', _tag: 'Success', value: undefined }, expected: undefined, showDiff: true, operator: 'strictEqual', [cause]: undefined } ❯ src/backend/DesktopBackendManager.test.ts (27 tests | 1 failed | 26 skipped) 41ms ❯ DesktopBackendManager (27) × stopAllPoolInstances allows slow cleanup but bounds hung backends 39ms ⎯⎯⎯⎯⎯⎯⎯ Failed Tests 2 ⎯⎯⎯⎯⎯⎯⎯ FAIL src/backend/DesktopBackendManager.test.ts > DesktopBackendManager > stopAllPoolInstances allows slow cleanup but bounds hung backends AssertionError: expected { _id: 'Exit', _tag: 'Success', …(1) } to equal undefined - Expected: undefined + Received: { "~effect/Effect/args": undefined, } ❯ src/backend/DesktopBackendManager.test.ts:1582:16 1580| 1581| yield* TestClock.adjust(Duration.seconds(6)); 1582| assert.isUndefined(quitFiber.pollUnsafe()); | ^ 1583| yield* Deferred.succeed(allowSlowTeardown, undefined); 1584| assert.equal(yield* Queue.take(teardownFinished), "instance1"); ❯ IteratorImpl.~effect/Effect/successCont ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:1422:28 ❯ ExitPrimitive.~effect/Effect/evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/core.ts:585:30 ❯ FiberImpl.runLoop ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:654:41 ❯ FiberImpl.evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:595:23 ❯ FiberImpl.evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:589:27 ❯ Array. ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:1025:13 ❯ MixedSchedulerDispatcher.runTasks ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/Scheduler.ts:254:17 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/2]⎯ FAIL src/app/DesktopLifecycle.test.ts > DesktopLifecycle > leaves SIGTERM to the lifecycle until its graceful shutdown completes AssertionError: expected [ 130, null ] to deeply equal [ +0, null ] - Expected + Received [ - 0, + 130, null, ] ❯ src/app/DesktopLifecycle.test.ts:168:14 166| if (line === "STOPPING") child.stdin.write("finish"); 167| } 168| assert.deepEqual(await exited, [0, null], stderr); | ^ 169| assert.deepEqual(lines, ["READY", "STOPPING", "CLEANED"]); 170| }, ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[2/2]⎯ Test Files 2 failed (2) Tests 2 failed | 31 skipped (33) Start at 08:51:59 Duration 3.94s (transform 62%, import 30%, tests 4%, setup 3%) Transform transforming modules took 3.76s · 62% of tracked time, re-done on every run persist transforms across runs with fsModuleCache: true learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns 20303-implementation-r2-negative.log note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead. RUN v5.0.1 /home/ubuntu/wt/desktop-app-04/apps/desktop stdout | src/app/DesktopLifecycle.test.ts > DesktopLifecycle > destroys windows and retains signal ownership until backend shutdown completes [09:08:51.057] ERROR (#1): Error [AssertionError]: SIGINT must remain owned during backend cleanup: expected [] to have a length of 1 but got +0 at /home/ubuntu/wt/desktop-app-04/apps/desktop/src/app/DesktopLifecycle.test.ts:306:20 { actual: 0, expected: 1, showDiff: true, [cause]: undefined } ❯ src/app/DesktopLifecycle.test.ts (6 tests | 1 failed | 5 skipped) 32ms ❯ DesktopLifecycle (6) × destroys windows and retains signal ownership until backend shutdown completes 30ms ⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯ FAIL src/app/DesktopLifecycle.test.ts > DesktopLifecycle > destroys windows and retains signal ownership until backend shutdown completes AssertionError: SIGINT must remain owned during backend cleanup: expected [] to have a length of 1 but got +0 - Expected + Received - 1 + 0 ❯ src/app/DesktopLifecycle.test.ts:306:20 304| .listeners(signal) 305| .filter((listener) => !originalSignals[signal].includes(… 306| assert.lengthOf(listeners, 1, `${signal} must remain owned… | ^ 307| listeners[0]?.(signal); 308| } ❯ IteratorImpl.~effect/Effect/successCont ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:1422:28 ❯ ExitPrimitive.~effect/Effect/evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/core.ts:585:30 ❯ FiberImpl.runLoop ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:654:41 ❯ FiberImpl.evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:595:23 ❯ FiberImpl.evaluate ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:589:27 ❯ Array. ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/internal/effect.ts:1159:17 ❯ doneUnsafe ../../node_modules/.pnpm/effect@4.0.5/node_modules/effect/src/Deferred.ts:1707:17 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯ Test Files 1 failed (1) Tests 1 failed | 5 skipped (6) Start at 09:08:48 Duration 2.45s (transform 61%, import 32%, setup 4%, tests 1%) 20303-primary-proof-r2.log note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead. RUN v5.0.1 /home/ubuntu/wt/desktop-app-04/apps/desktop Test Files 2 passed (2) Tests 3 passed | 30 skipped (33) Start at 09:15:21 Duration 4.43s (transform 62%, import 31%, tests 4%, setup 3%) Transform transforming modules took 4.28s · 62% of tracked time, re-done on every run persist transforms across runs with fsModuleCache: true learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns 20303-implementation-r2-tests.log note: You are running `vp test` as a Vite+ built-in command. If you meant to run the test npm script, use `vpr test` instead. RUN v5.0.1 /home/ubuntu/wt/desktop-app-04/apps/desktop Test Files 3 passed (3) Tests 71 passed (71) Start at 09:09:02 Duration 3.86s (transform 57%, import 32%, tests 7%, setup 4%) Transform transforming modules took 4.84s · 57% of tracked time, re-done on every run persist transforms across runs with fsModuleCache: true learn more: https://vitest.dev/guide/improving-performance#caching-between-reruns 20303-implementation-runtime-probe.log success: exit=0, stdout='CLEANED\n', stderr='' failure-curried: exit=1, stdout='CLEANED\n', stderr='' interruption: exit=130, stdout='CLEANED\n', stderr='' custom-teardown: exit=42, stdout='CLEANED\nCUSTOM_TEARDOWN:Success\n', stderr='' 20303-implementation-r2-typecheck.log src/app/DesktopClerk.test.ts(383,27): suggestion TS377117: `Effect.succeedSome` expresses this Option success value directly. effect(preferSucceedSomeOrNone) src/app/DesktopWebLinks.test.ts(29,31): suggestion TS377117: `Effect.succeedSome` expresses this Option success value directly. effect(preferSucceedSomeOrNone)