comfyui: replace the stale compose container with a Quadlet unit

ComfyUI had failed 9,146 times and had been down ~7 hours when this was found:
its container was created 2026-09-15 14:12, BEFORE the GPU declarations were
added to the compose service, and `restart: unless-stopped` kept restarting
that stale container — no /dev/kfd, no /dev/dri, no keep-groups — so it died
every time on `RuntimeError: No HIP GPUs are available`. Its "unit" was a
hand-written ~/.config/systemd/user/comfyui.service that shelled out to
`podman compose up -d`, which is not repo-tracked state and collides by name
with the Quadlet the generator produces.

  - dankclaw/comfyui/quadlet/comfyui.container: image comfyui-rocm:gfx1151
    (built from Containerfile.comfyui), /dev/kfd + /dev/dri, keep-groups,
    the four comfyui-data volumes, loopback-only publish (an unguarded service
    is internal-only here; the homepage card probes 127.0.0.1:8188), Restart=
    always, WantedBy=default.target.
  - the compose service is deleted — one owner per container name.
  - deploy_comfyui builds the image, installs the unit, retires the compose-era
    unit into ~/.AGENTTRASH, removes the stale container so the unit's own can
    take the name, and waits on :8188.
  - the healthcheck is a file, because the podman 5.x v1 generator splits
    HealthCmd on spaces and an inline `python3 -c "..."` becomes a quoting
    puzzle that fails silently.

The comfyui seam now reads the unit instead of compose for devices, command and
groups (and resolves the Containerfile from the deployer's declaration, not
from a directory listing).

dankclaw/comfyui/quadlet/comfyui.container

@@ -0,0 +1,68 @@
+# Quadlet unit: ComfyUI (rootless, boot-persistent).
+#
+# Install path on dankclaw: ~/.config/containers/systemd/comfyui.container
+# Unit name: comfyui.service (container name: comfyui)
+#
+# WHY THIS FILE EXISTS. ComfyUI ran from `dankclaw/compose.yaml` through a
+# hand-written `~/.config/systemd/user/comfyui.service` that called
+# `podman compose up -d`. Its container was created 2026-09-15 14:12, BEFORE the
+# GPU declarations were added to the compose service, and `restart:
+# unless-stopped` then kept restarting that stale container — so it started
+# without /dev/kfd, without /dev/dri and without keep-groups, died on
+# `RuntimeError: No HIP GPUs are available`, and had restarted 9,146 times when
+# this was found. A recreate via compose would have fixed the container; a unit
+# fixes the class: one owner per container name, repo-tracked, boot-persistent
+# through the generator.
+#
+# GPU ACCESS. /dev/kfd + /dev/dri plus keep-groups. A literal `render` group
+# entry cannot work under rootless Podman (the group name does not resolve
+# inside the user namespace), and the companion udev rule
+# (dankclaw/udev/99-comfyui-gpu-access.rules) keeps those nodes MODE 0666 so a
+# user-unit spawn — which carries no supplementary groups — can still open them.
+# Both halves are asserted by tests/comfyui_rocm.bats.
+#
+# EXPOSURE. Loopback only. ComfyUI has no authentication and executes arbitrary
+# node graphs, and it has no Caddy vhost, so the repository's rule applies:
+# an unguarded service is internal-only. The homepage status card probes
+# 127.0.0.1:8188, which this satisfies. To reach the UI from another machine,
+# guard it behind the auth chain and give it a vhost — do not widen the bind.
+#
+# DATA. Models, input, output and custom_nodes live under
+# /home/dank/comfyui-data (host state, not in the repo).
+[Unit]
+Description=ComfyUI (gfx1151 ROCm image generation)
+After=network-online.target
+Wants=network-online.target
+
+[Container]
+ContainerName=comfyui
+Image=localhost/comfyui-rocm:gfx1151
+Pull=never
+Network=dankclaw_default
+PublishPort=127.0.0.1:8188:8188
+AddDevice=/dev/kfd
+AddDevice=/dev/dri
+GroupAdd=keep-groups
+Volume=/home/dank/comfyui-data/models:/opt/ComfyUI/models
+Volume=/home/dank/comfyui-data/input:/opt/ComfyUI/input
+Volume=/home/dank/comfyui-data/output:/opt/ComfyUI/output
+Volume=/home/dank/comfyui-data/custom_nodes:/opt/ComfyUI/custom_nodes
+Volume=/home/dank/serverAppConfigs/dankclaw/comfyui/comfyui-healthcheck.py:/usr/local/bin/comfyui-healthcheck.py:ro
+Exec=python main.py --listen 0.0.0.0 --port 8188
+# The probe lives in a file because the podman 5.x v1 generator splits
+# HealthCmd on spaces into an argv array; an inline `python3 -c "..."` becomes
+# a puzzle of quoting that fails silently.
+HealthCmd=python3 /usr/local/bin/comfyui-healthcheck.py
+HealthInterval=30s
+HealthTimeout=10s
+HealthRetries=3
+# First start loads torch and the node graph; give it room before the probe
+# counts against it.
+HealthStartPeriod=300s
+
+[Service]
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=default.target