docs: research ComfyUI on ROCm and Vulkan for Strix Halo (gfx1151)

Live-verified on Dankclaw 2026-08-14:
- official rocm/comfyui image is built PYTORCH_ROCM_ARCH=gfx942;gfx950
  (datacenter only) -> torch.cuda.is_available() False on gfx1151
- AMD gfx1151-tagged PyTorch build (rocm/vllm:...gfx1151...pytorch_2.9.1)
  -> avail True, Radeon 8060S, cap (11,5); needs /dev/kfd + /dev/dri
- torch.backends.vulkan is compiled out of standard wheels; no ComfyUI
  --vulkan flag exists; Vulkan is a dead end for ComfyUI
- Lemonade Server does image gen via wrapped stable-diffusion.cpp, whose
  HIP kernels include gfx1151 -> works where ComfyUI's torch cannot

New pages: ComfyUI ROCm and Vulkan, Lemonade and sd.cpp; ComfyUI.md
qualified; compose stays --cpu until a gfx1151-enabled torch image is built

docs/Dankclaw/ComfyUI.md

@@ -16,7 +16,9 @@ ComfyUI is a node-based AI image generation engine. Workflows are built from nod
 
 ## Why CPU on Dankclaw
 
-Dankclaw is an AMD Strix Halo APU (gfx1151). Precompiled ROCm PyTorch wheels do not support this iGPU. This matches the existing knowledge base entry for ComfyUI on Dankclaw: the running instance uses `--cpu`. The Docker image for CPU execution is the `comfyui` CPU build; the GPU images (`comfyui-cuda`) must not be used.
+Dankclaw is an AMD Strix Halo APU (gfx1151). Precompiled PyTorch ROCm wheels do not ship kernels for this iGPU, and the official `rocm/comfyui` image is built for datacenter archs only (`PYTORCH_ROCM_ARCH=gfx942;gfx950`). This matches the knowledge base entry: the running instance uses `--cpu`.
+
+> **Update (2026-08-14):** the blanket claim "ROCm unavailable on Strix Halo" is now qualified. AMD publishes gfx1151-tagged PyTorch builds that work on this hardware, and sd.cpp/Lemonade ship gfx1151 kernels today. See [[ComfyUI ROCm and Vulkan]] and [[Lemonade and sd.cpp]]. The CPU config below remains correct until a gfx1151-enabled torch image is built.
 
 ## Command Line (from `cli_args.py`)
 
@@ -51,4 +53,6 @@ The web UI responds on the root path `/`. ComfyUI also exposes `/system_stats`.
 ## See Also
 
 - [[Dankclaw Stack]]
+- [[ComfyUI ROCm and Vulkan]] — live-verified GPU path research
+- [[Lemonade and sd.cpp]] — the working ggml-family alternative
 - Knowledge base: [[ComfyUI]] (tools), [[ComfyUI Troubleshooting]]