ComfyUI: GPU (gfx1151 ROCm) build via container

Replace the CPU stock image with a container built from
Containerfile.comfyui on AMD's gfx1151-tagged vLLM base — the only torch
build verified to report torch.cuda.is_available()=True on the Strix Halo
APU (Radeon 8060S, capability (11,5)).

- Containerfile bakes the ComfyUI code in and installs its deps, but skips
  the torch family (the base image already ships the gfx1151 ROCm
  torch/torchvision/torchaudio; an unpinned 'torch' in requirements.txt would
  clobber the gfx1151 kernels).
- compose comfyui service: build + image comfyui-rocm:gfx1151, passes
  /dev/kfd + /dev/dri, adds video+render groups, drops --cpu. Models/data
  persist under /opt/comfyui.
- Un-skip the four compose-wiring acceptance tests (the gate for this work).

tests/comfyui_rocm.bats

@@ -7,16 +7,15 @@
 #   - NOT pass --cpu
 #   - add the video and render groups
 #
-# STATUS (2026-08-18): the GPU migration is NOT yet applied. The compose still
-# runs ComfyUI with --cpu on the stock image (the gfx1151 torch image is not
-# built yet). The four compose-wiring tests below are skipped until the ROCm
-# build lands. The Containerfile test stays active: the file exists and is ready.
-# See docs/Research/ComfyUI ROCm and Vulkan.md. Re-enable the skips then.
+# STATUS (2026-08-19): the GPU migration is applied. The compose builds
+# comfyui-rocm:gfx1151 from Containerfile.comfyui (AMD's gfx1151 torch base),
+# passes /dev/kfd + /dev/dri, adds the video+render groups, and drops --cpu.
+# The four compose-wiring tests below are active (un-skipped). See
+# docs/Research/ComfyUI ROCm and Vulkan.md.
 
 load helpers
 
 @test "comfyui builds from the gfx1151 ROCm Containerfile" {
-    skip "GPU ComfyUI migration pending (CPU path in use)"
     local compose="$REPO_ROOT/dankclaw/compose.yaml"
     python3 - "$compose" <<'PYEOF'
 import sys, yaml
@@ -39,7 +38,6 @@ PYEOF
 }
 
 @test "comfyui passes /dev/kfd and /dev/dri to the container" {
-    skip "GPU ComfyUI migration pending (CPU path in use)"
     python3 - "$REPO_ROOT/dankclaw/compose.yaml" <<'PYEOF'
 import sys, yaml
 with open(sys.argv[1]) as fh:
@@ -53,7 +51,6 @@ PYEOF
 }
 
 @test "comfyui does not run with --cpu" {
-    skip "GPU ComfyUI migration pending (CPU path in use)"
     python3 - "$REPO_ROOT/dankclaw/compose.yaml" <<'PYEOF'
 import sys, yaml
 with open(sys.argv[1]) as fh:
@@ -67,7 +64,6 @@ PYEOF
 }
 
 @test "comfyui adds the video and render groups" {
-    skip "GPU ComfyUI migration pending (CPU path in use)"
     python3 - "$REPO_ROOT/dankclaw/compose.yaml" <<'PYEOF'
 import sys, yaml
 with open(sys.argv[1]) as fh: