The earlier fix only widened the vitest timeout, but the real race is the
patient probe reading the 1s launcher under the 5000ms *default* probe budget:
under a full parallel run spawnSync blocks the worker and fork/exec latency can
push the launcher's wall-clock past 5000ms, so the patient probe wrongly reads
unusable and the assertion fails. Give the patient probe a generous explicit
15000ms budget (still far below its 1s launcher runtime margin) so only the
250ms impatient probe races the launcher; keep a 30s vitest timeout above the
patient budget.
`bounds the default probes` runs a real launcher that sleeps 1s under the
5000ms default probe budget, all wrapped in vitest's 5000ms default test
timeout. The blocking spawnSync races that wrapper and tips over under the
load spike of a full parallel run — a pre-existing, load-sensitive flake
(noted as unrelated in this PR's original description). Give the test an
explicit 20s timeout so its bounded subprocess work never races the default.
ctx.sandbox (dsh-sandbox): confine(argv, policy) returns the argv to spawn
instead — wrapped so the process and its children run confined — plus the
enforcement completeness and the backend denial/runner-failure dialects;
no usable backend throws the fail-closed SANDBOX_UNAVAILABLE. Policy rides
per call. dsh-sandbox-local selects by platform and caches the verdict:
multi-candidate chains probe FUNCTIONALLY in preference order (Linux:
bwrap → the registry-installed node-addon-landlock-run launcher), a sole
candidate is selected unprobed (darwin: sandbox-exec/Seatbelt) and fails
closed at execution via runnerFailureSignatures; win32 is a reserved empty
chain. Profile parity is honest per backend (documented temp-area and ABI
differences; enforcement full|partial is a structured result fact).
CI: the sandbox-e2e matrix proves real-kernel confinement per rung (bwrap,
Landlock per architecture through the registry-installed launcher,
Seatbelt), failing on a silent all-skip; the packed-install rehearsal
installs the launcher family from the registry and asserts the binary
executable apart from kernel enforcement.
Tianyi Cui
Turtle
imccyu
kingwl