GpuHealthReading
The health fields of a GPU that the sampler's own query brings (monitor-facts-column §MFD-7c).
Declared in src/libs/libinventory/inventory/sampler/ResourceSample.hpp.
Detailed description
NVIDIA's fields join the one `nvidia-smi` query of each tick, so the GPU is asked once; the sampler hands them to `HealthProbe` on its thread. The sampler never reads a temperature for itself. Unknown is absent.