Add NVIDIA stress loader selection and DCGM 4 support

bible-local/architecture/system-overview.md

@@ -21,8 +21,8 @@ Fills gaps where Redfish/logpile is blind:
 - Read-only hardware inventory: board, CPU, memory, storage, PCIe, PSU, GPU, NIC, RAID
 - Machine-readable health summary derived from collector verdicts
 - Operator-triggered acceptance tests for NVIDIA, memory, and storage
-- NVIDIA SAT includes both diagnostic collection and mixed-precision GPU stress via `bee-gpu-stress`
-- `bee-gpu-stress` should exercise tensor/inference paths (`fp16`, `fp32`/TF32, `fp8`, `fp4` when supported by the GPU/userspace stack) and fall back to Driver API PTX burn only if cuBLASLt is unavailable
+- NVIDIA SAT includes diagnostic collection plus a lightweight in-image GPU stress step via `bee-gpu-burn`
+- `bee-gpu-burn` should exercise tensor/inference paths (`fp16`, `fp32`/TF32, `fp8`, `fp4` when supported by the GPU/userspace stack) and fall back to Driver API PTX burn only if cuBLASLt is unavailable
 - Automatic boot audit with operator-facing local console and SSH access
 - NVIDIA proprietary driver loaded at boot for GPU enrichment via `nvidia-smi`
 - SSH access (OpenSSH) always available for inspection and debugging
@@ -70,7 +70,7 @@ Fills gaps where Redfish/logpile is blind:
 | SSH | OpenSSH server |
 | NVIDIA driver | Proprietary `.run` installer, built against Debian kernel headers |
 | NVIDIA modules | Loaded via `insmod` from `/usr/local/lib/nvidia/` |
-| GPU stress backend | `bee-gpu-stress` + cuBLASLt/cuBLAS/cudart mixed-precision GEMM, with Driver API PTX fallback |
+| GPU stress backend | `bee-gpu-burn` + cuBLASLt/cuBLAS/cudart mixed-precision GEMM, with Driver API PTX fallback |
 | Builder | Debian 12 host/VM or Debian 12 container image |
 
 ## Operator UX