Add vaultwarden app (migrated from docker on 10.10.0.5)

- Pinned to 1.37.0 so the migration is not also an upgrade
- ADMIN_TOKEN rotated to an Argon2id PHC string, stored as a SealedSecret.
  The old token was plaintext AND set in config.json, which overrides env --
  both that key and signups_allowed were removed during migration so the
  Deployment is the source of truth. signups had been silently enabled.
- /admin keeps Authentik forward-auth at priority 1000 (Traefik's default
  priority is rule length; the old docker router used 10 vs an implicit 24
  and was therefore bypassed).
- vault.aleshym.co stays private: absent from the k3s public catchall and
  from the Docker Traefik wan entrypoint.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/vaultwarden/vaultwarden-sealedsecret.yaml

@@ -0,0 +1,13 @@
+---
+apiVersion: bitnami.com/v1alpha1
+kind: SealedSecret
+metadata:
+  name: vaultwarden-secret
+  namespace: vaultwarden
+spec:
+  encryptedData:
+    ADMIN_TOKEN: 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
+  template:
+    metadata:
+      name: vaultwarden-secret
+      namespace: vaultwarden