A wedged GPU (fallen off the bus, needs a physical power-cycle) makes
nvidia-smi/nvidia-bug-report.sh/dcgmi hang indefinitely, so building a
support bundle on such a host never finished and the "Download Support
Bundle" button spun on "Building..." forever with no way to recover
short of restarting the service.
Give every subprocess this file shells out to a bounded context.
nvidia-bug-report.sh gets a longer timeout since it legitimately takes
tens of seconds on multi-GPU boxes even when healthy.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
