withTimeout wrapped a blocking process.waitFor() that coroutine cancellation
can't interrupt, so a hung process hung the stage until it exited on its own;
and destroyForcibly() killed only the direct child, leaving sh -c grandchildren
(the real npm/tsc) as orphans. Use process.waitFor(timeout, MILLISECONDS) for
an on-the-clock deadline, and kill via toHandle().descendants() + the parent.
kami
ddf2c014f1