feat(kanidm): vault-managed replication certs with auto-restart

- Store per-pod replication certs in Vault (kv/kubernetes/namespace/kanidm/default/repl-certs)
- VaultAuth + VaultStaticSecret sync certs to kanidm-repl-certs Secret
- busybox config-init init container injects peer certs from Secret into server.toml at startup
- Remove hardcoded partner_cert entries from per-pod server.toml templates
- Add automatic_refresh = true to all replication configs
- Add reloader.stakater.com/auto annotation to trigger rolling restart on ConfigMap/Secret changes
- Document domain UUID mismatch resolution and cert rotation in README

apps/base/kanidm/kustomization.yaml

@@ -5,6 +5,8 @@ kind: Kustomization
 resources:
   - namespace.yaml
   - serviceaccount.yaml
+  - vaultauth.yaml
+  - vaultstaticsecret.yaml
   - certificate.yaml
   - service.yaml
   - statefulset.yaml