feat(maintainerr): deploy for watched-movie cleanup (Plex -> Radarr)

Rule-based deletion of watched movies from Radarr (with files), driven by
Maintainerr. Raw manifests + directory-type Argo Application (no Helm).
Config on shared plex-data NFS PVC (subPath configs/maintainerr); Recreate
strategy since it uses SQLite on RWX NFS. ClusterIP only, no ingress —
access via kubectl/k9s port-forward.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

applications/maintainerr.yaml

@@ -0,0 +1,23 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: maintainerr
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: http://gitea-http.gitea.svc.cluster.local:3000/admin/turingpi.git
+    targetRevision: HEAD
+    path: manifests/maintainerr
+    directory:
+      recurse: false
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: default
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+    - CreateNamespace=true
+    - ServerSideApply=true