servers/pfi-pve: pfi-postgres PGDATA is on local VM disk (not NFS)

VM 105's annotation said "PGDATA on NFS from ana-nas" — postgres
migrated off NFS to local VM disk on 2026-04-23 per STATUS.md ("DB data
on local disk, not NFS. pfi-postgres migrated 2026-04-23"). Updated to
reflect current reality with the migration date as the rot detector.

Still-TBD note for VM 33: `pbs-ana` is listed as "VM (TBD)" — was
deployed and has its own server dir, but its VM ID isn't recorded
here. `qm list | grep pbs` on pfi-pve would resolve, but my SSH to
pfi-pve as lkraven is currently password-required so I can't pull
this myself. Flag for next pfi-pve console session.

Surfaced by /tend-docs audit 2026-05-14.

servers/pfi-pve/README.md

@@ -26,7 +26,7 @@ live here. Known as of 2026-04-23 (from vzdump logs + `servers/`
 dirs; not exhaustive):
 
 - **VM 102** — `ana-docker` (PFI-ANA-Docker)
-- **VM 105** — `pfi-postgres` (PFI-Postgres; PGDATA on NFS from ana-nas)
+- **VM 105** — `pfi-postgres` (PFI-Postgres; PGDATA on local VM disk as of 2026-04-23 migration off ana-nas NFS)
 - **VM 107** — `pfi-pteradactyl` (game panel)
 - **VM 110** — `pfi-ana-webhost`
 - **VM 111** — `pfi-tacticalrmm`