Own operation results and exact rejections in withVerifierCleanup, including
undefined, null and independent cleanup failures. Remove the optional-primary
cleanup contract and migrate every caller, preserving returns, annotations,
signal restoration and dependent cleanup order.
Make Frida/JEB reporters fail on reasonless rejections and retain JEB fixture
files while provider cleanup is incomplete. Own the nested packaged WASM
verifier and expose its composite process/root cleanup capability for retry.
Update runnable docs and isolated fixture dependencies.
Validation: 547 focused cases in 20 files, eight isolated boundary unit checks,
static/build/docs/discovery gates and duplication check (3.58%). Node process,
SDK and descriptor cleanup are exercised; provider and packaging results in
orchestration tests are simulated. Pack/install subprocess ownership remains
with the existing shared package runner outside the nested-command change.
Distinguish CDP session detachment, observed crashes, and transport loss. Preserve the observed window alongside the original typed coverage-stop failure and unconfirmed cleanup.
Validated with 40 focused boundary tests, check:ci, docs:check, and the real Chrome public CLI/MCP verifier on macOS. Browser timing comparison remains incomplete because unchanged-main fixture readiness was intermittent.
Fixes#5756
Use one cleanup owner across browser, Frida and JEB verifiers. Attempt all independent cleanup tasks, retain primary failures, and emit successful reports only after cleanup. Remove the superseded browser helper and duplicate tests.
Validation: cleanup aggregation and runtime fixture tests, build and static checks passed. No real Frida or JEB run.
morluto