arrstack: rebuild adult tier on the shared-Postgres pattern

Replace the legacy adult sonarr/radarr/nzbget with the kids-tier pattern
(active-active -unkin fork on shared arrstack-postgres + Valkey, S3
MediaCover/Backup, exportarr metrics). The old adult apps held no data, so
the wipe is sanctioned.

- add sonarr-adult/radarr-adult/nzbget-adult (copies of the *-kids dirs):
  own DBs sonarr-adult-main/radarr-adult-main, Vault paths
  .../default/{sonarr,radarr}-adult(+-db), S3 prefixes sonarr-adult/
  radarr-adult, UrlBase + probe + exportarr paths /3aa168/{sonarr,radarr},
  media subPaths tvshows/adult + movies/adult, nzbget config PVC on
  cephrbd-fast-delete
- postgres: add managed roles sonarr-adult/radarr-adult, Database CRDs
  {sonarr,radarr}-adult-main, VaultStaticSecrets {sonarr,radarr}-adult-db
- remove legacy sonarr/radarr/nzbget dirs (incl. their gateway/httproute),
  managed roles sonarr/radarr, databases {sonarr,radarr}-main, VSS
  {sonarr,radarr}-db, and all kustomization entries

apps/base/arrstack/postgres/vaultstaticsecret.yaml

@@ -10,40 +10,6 @@
 # (wave 1) reconciles the roles.
 apiVersion: secrets.hashicorp.com/v1beta1
 kind: VaultStaticSecret
-metadata:
-  name: sonarr-db
-  namespace: arrstack
-spec:
-  destination:
-    create: true
-    name: sonarr-db
-    overwrite: true
-  hmacSecretData: true
-  mount: kv
-  path: kubernetes/namespace/arrstack/default/sonarr-db
-  refreshAfter: 5m
-  type: kv-v2
-  vaultAuthRef: default
----
-apiVersion: secrets.hashicorp.com/v1beta1
-kind: VaultStaticSecret
-metadata:
-  name: radarr-db
-  namespace: arrstack
-spec:
-  destination:
-    create: true
-    name: radarr-db
-    overwrite: true
-  hmacSecretData: true
-  mount: kv
-  path: kubernetes/namespace/arrstack/default/radarr-db
-  refreshAfter: 5m
-  type: kv-v2
-  vaultAuthRef: default
----
-apiVersion: secrets.hashicorp.com/v1beta1
-kind: VaultStaticSecret
 metadata:
   name: prowlarr-db
   namespace: arrstack
@@ -92,3 +58,37 @@ spec:
   refreshAfter: 5m
   type: kv-v2
   vaultAuthRef: default
+---
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultStaticSecret
+metadata:
+  name: sonarr-adult-db
+  namespace: arrstack
+spec:
+  destination:
+    create: true
+    name: sonarr-adult-db
+    overwrite: true
+  hmacSecretData: true
+  mount: kv
+  path: kubernetes/namespace/arrstack/default/sonarr-adult-db
+  refreshAfter: 5m
+  type: kv-v2
+  vaultAuthRef: default
+---
+apiVersion: secrets.hashicorp.com/v1beta1
+kind: VaultStaticSecret
+metadata:
+  name: radarr-adult-db
+  namespace: arrstack
+spec:
+  destination:
+    create: true
+    name: radarr-adult-db
+    overwrite: true
+  hmacSecretData: true
+  mount: kv
+  path: kubernetes/namespace/arrstack/default/radarr-adult-db
+  refreshAfter: 5m
+  type: kv-v2
+  vaultAuthRef: default