refactor(couchdb): move raw manifests to templates/ subdir

Per Tony's recommendation — eliminates the explicit include filter.
New manifests go in templates/ and are picked up automatically by ArgoCD.
No filter to update when adding future resources.

Moved: namespace.yaml, externalsecret.yaml, ingress-public.yaml -> templates/

cluster/applications/couchdb/application.yaml

@@ -22,13 +22,13 @@ spec:
     - repoURL: https://gitea.mk-labs.cloud/rblundon/homelab.git
       targetRevision: HEAD
       ref: values
-    # Additional manifests (namespace, externalsecret)
+    # Additional manifests (namespace, externalsecret, ingress-public, etc.)
+    # Drop new raw manifests into templates/ — no filter to update.
     - repoURL: https://gitea.mk-labs.cloud/rblundon/homelab.git
       targetRevision: HEAD
-      path: cluster/applications/couchdb
+      path: cluster/applications/couchdb/templates
       directory:
         recurse: false
-        include: '{namespace.yaml,externalsecret.yaml,ingress-public.yaml}'
   destination:
     server: https://kubernetes.default.svc
     namespace: couchdb