The native-smoke job ran bare `pnpm vitest run <files>` with no --config.
There is no root-level vitest/vite config, so vitest fell back to its
built-in defaults: a 5000ms testTimeout and no Windows worker cap. The
real csc.exe launcher-compile tests (build-windows-cli-launcher and
ssh-remote-cli-launcher) cold-start in 1.4-7.4s on hosted Windows and
tipped over the 5s default, failing the PR check.
Pass --config config/vitest.config.ts like every other vitest invocation
in the repo (pnpm test, pr.yml) so the job gets the shared 30s timeout and
Windows maxWorkers:4 cap (less CPU contention -> lower compile variance).
Positional file args still filter to just the listed files.
d3fedb9ba9