fix(argocd): remove kustomize CMP plugin & use homelab project

- Remove non-existent kustomize CMP plugin (ArgoCD doesn't have it)
- Use standard built-in kustomize support
- Change project from 'poimen' to 'homelab' (homelab project exists)
- This allows poimen-workflows Application to actually sync

k8s/argocd/poimen-workflows.yaml

@@ -7,13 +7,11 @@ metadata:
     app.kubernetes.io/name: poimen-workflows
     app.kubernetes.io/component: orchestrator
 spec:
-  project: poimen
+  project: homelab
   source:
     repoURL: https://forgejo.riotpiao.com/rock/poimen-workflows.git
     targetRevision: main
     path: k8s
-    plugin:
-      name: kustomize
   destination:
     server: https://kubernetes.default.svc
     namespace: poimen