feat(storage): migrate all sensitive services to proxmox-lvm-encrypted
Reconcile Terraform with cluster state after manual encrypted PVC migrations
and complete the remaining unfinished migrations. All services storing
sensitive data now use LUKS2-encrypted block storage via the Proxmox CSI
plugin.
## Context
Only Technitium DNS was using encrypted storage in Terraform. Many services
had been manually migrated to encrypted PVCs in the cluster, but Terraform
was never updated — creating dangerous state drift where a `tg apply` could
recreate unencrypted PVCs.
## This change
Phase 0 — Infrastructure:
- Add `proxmox-lvm-encrypted` StorageClass to Helm values (extraParameters)
- Add ExternalSecret for LUKS encryption passphrase to Terraform
- Fix CSI node plugin memory: `node.plugin.resources` (not `node.resources`)
with 1280Mi limit for LUKS2 Argon2id key derivation
Phase 1 — TF state reconciliation (zero downtime):
- Health, Matrix, N8N, Forgejo, Vaultwarden, Mailserver: state rm + import
- Redis, DBAAS MySQL, DBAAS PostgreSQL: Helm/CNPG value updates
Phase 2 — Data migration (encrypted PVCs existed but unused):
- Headscale, Frigate, MeshCentral: rsync + switchover
- Nextcloud (20Gi): rsync + chart_values update
Phase 3 — New encrypted PVCs:
- Roundcube HTML, HackMD, Affine, DBAAS pgadmin: create + rsync + switchover
Phase 4 — Cleanup:
- Deleted 5 orphaned unencrypted PVCs
## Services migrated (18 PVCs across 14 namespaces)
```
vaultwarden → vaultwarden-data-encrypted
dbaas → datadir-mysql-cluster-0, pg-cluster-{1,2}, dbaas-pgadmin-encrypted
mailserver → mailserver-data-encrypted, roundcubemail-{enigma,html}-encrypted
nextcloud → nextcloud-data-encrypted
forgejo → forgejo-data-encrypted
matrix → matrix-data-encrypted
n8n → n8n-data-encrypted
affine → affine-data-encrypted
health → health-uploads-encrypted
hackmd → hackmd-data-encrypted
redis → redis-data-redis-node-{0,1}
headscale → headscale-data-encrypted
frigate → frigate-config-encrypted
meshcentral → meshcentral-{data,files}-encrypted
```
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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