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).

dankclaw/compose.yaml

@@ -11,21 +11,37 @@ services:
   # Deploy with: scripts/deploy-searxng-quadlet.sh dankclaw
   # See ../docs/Dankclaw/SearXNG.md, Gluetun.md, Valkey.md.
 
-  # --- AI image generation (CPU backend; ROCm does not support gfx1151) ----
+  # --- AI image generation (ROCm GPU backend, gfx1151) ---------------------
+  # Built from Containerfile.comfyui on AMD's gfx1151 torch base. The GPU is
+  # passed through (/dev/kfd, /dev/dri) with the video+render groups; no --cpu.
+  # Models + data persist under /opt/comfyui. See ../docs/Dankclaw/ComfyUI.md.
   comfyui:
-    image: ghcr.io/comfyanonymous/comfyui:latest
+    build:
+      context: .
+      dockerfile: Containerfile.comfyui
+    image: comfyui-rocm:gfx1151
     container_name: comfyui
     restart: unless-stopped
-    command: ["python", "main.py", "--cpu", "--listen", "0.0.0.0", "--port", "8188"]
+    command: ["python", "main.py", "--listen", "0.0.0.0", "--port", "8188"]
     ports:
       - "8188:8188"
+    devices:
+      - /dev/kfd:/dev/kfd
+      - /dev/dri:/dev/dri
+    group_add:
+      - video
+      - render
     volumes:
-      - /opt/comfyui:/workspace
+      - /opt/comfyui/models:/opt/ComfyUI/models
+      - /opt/comfyui/input:/opt/ComfyUI/input
+      - /opt/comfyui/output:/opt/ComfyUI/output
+      - /opt/comfyui/custom_nodes:/opt/ComfyUI/custom_nodes
     healthcheck:
       test: ["CMD", "python3", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8188/')"]
       interval: 30s
       timeout: 10s
-      retries: 3
+      retries: 5
+      start_period: 180s
 
   # --- Chat UI + agent -----------------------------------------------------
   openwebui: