The coverage lanes flag four uncovered locations after the master merge:
the spec.owner spread in tool-bash/tool-pwsh observe, the workflow mirror's
owner spread, and tool-pwsh's outer observation catch. The covering tests
existed only on the stacked job-kill branch; give this branch its own:
an owned background run per shell asserting the fenced ownerSession row,
the owned workflow mirror run, and a throwing open() through the pwsh
outer catch. The windows-only file-reference-local gap reproduces on
master's own windows lane at the merge point and stays upstream.
Yichen Jiang
053979cdec