The Dependency layout lane failed whenever the npm child process exceeded
a hardcoded 300 s deadline. That deadline measured the runner rather than
the graph: the same layout resolves in 137-205 s on an idle developer host
and exceeded 300 s on CI while the placement assertion reported no error,
so the failure carried no information about what had grown.
The gate now bounds the verified graph by resolution work units,
dshPackagesPerVersion * checkedDshEdges against MAX_RESOLUTION_WORK_UNITS,
and keeps the wall clock only as a hang guard derived from that budget.
Growth fails with the graph's own measured counts on any runner.
The resolution cost itself is unchanged. Measurement attributed 99.3% of
it to npm's peer-conflict placement, and cache reuse, graph splitting and
the placement flags were measured and rejected.
zhc