Warning: This build has drifted.
The coverage report for this pull request build may be inaccurate because its base commit is no longer the HEAD of its target branch.
This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

    • Learn more: For more information on this, see Tracking coverage changes for pull request builds.
    • Fix now: For a quick fix, rebase this PR at GitHub. Your next report should be accurate.
    • Prevent going forward: To avoid this issue with future PRs, see these Recommended CI Configurations.

test(launchers): fold stderr relay expectations into the exit-code sweep

A separate launcher-by-backend pass for the stderr relay doubled the
matrix and pushed the app package past the 60s timeout in make race.
The exit-code test already walks the same matrix with the same fake
launcher environment, so the stderr expectations ride along there,
gated per launcher because the plan-review launcher has no relay.

Also document the relay in the custom-launcher contract: an override
built to the previous three obligations relays nothing, while the
skill now tells agents the failure text will be present.