fix(homepage): add required proxmox.yaml config to stop CrashLoopBackOff

Homepage v2.1.2 treats proxmox.yaml as a required config file (present in
the image skeleton dir /app/src/skeleton alongside services/settings/
bookmarks/widgets/docker/kubernetes/custom.*). On startup it copies a
default skeleton into /app/config for any required file that is missing.
The ConfigMap provided every skeleton file except proxmox.yaml, so the pod
tried to copyfile the proxmox skeleton into the read-only subPath-mounted
/app/config and crashed with EACCES -> CrashLoopBackOff -> Gateway "no
healthy upstream".

Provide an empty proxmox.yaml in the ConfigMap and mount it via subPath
like the other config files, so Homepage finds all required files and
never writes at runtime. Verified the full required set against the running
image's skeleton dir (9 files); proxmox.yaml was the only missing one.
Bumped checksum/config annotation to re-roll the pod.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

platform/homepage/deployment.yaml

@@ -25,7 +25,7 @@ spec:
         app.kubernetes.io/name: homepage
       annotations:
         # Re-roll the pod when the config changes (ConfigMap subPath mounts do NOT hot-reload).
-        checksum/config: config-v1
+        checksum/config: config-v2
     spec:
       automountServiceAccountToken: false
       securityContext:
@@ -89,6 +89,9 @@ spec:
             - { name: homepage-config, mountPath: /app/config/widgets.yaml, subPath: widgets.yaml, readOnly: true }
             - { name: homepage-config, mountPath: /app/config/docker.yaml, subPath: docker.yaml, readOnly: true }
             - { name: homepage-config, mountPath: /app/config/kubernetes.yaml, subPath: kubernetes.yaml, readOnly: true }
+            # proxmox.yaml is ALSO a required file in Homepage v2.1.2's skeleton — provide it so the
+            # app never copies a skeleton into the read-only /app/config (EACCES crash otherwise).
+            - { name: homepage-config, mountPath: /app/config/proxmox.yaml, subPath: proxmox.yaml, readOnly: true }
             - { name: homepage-config, mountPath: /app/config/custom.css, subPath: custom.css, readOnly: true }
             - { name: homepage-config, mountPath: /app/config/custom.js, subPath: custom.js, readOnly: true }
             # Writable scratch for Homepage's runtime logs (it writes /app/config/logs).