Phase 1: precise container/host wording on platform L1/L2

'The spine' records 50+ containers across 3 hosts and a 4-host estate; the
pages asserted containers 'across four hosts'. Reworded so the container
count and the host count are each stated without implying a distribution
the sources do not give. No metric value changed.

DoD: schema valid (make validate clean), metrics still trace to the
approved chip set.

content/platform/platform-estate.md

@@ -3,7 +3,7 @@ id: platform-estate
 area: platform
 level: 2
 title: "A small estate run to a documented standard"
-claim: "Fifty or more containers across four hosts on declarative configuration — with packaging discipline · encrypted backups and a restore runbook · loopback-bound services · and one public listener."
+claim: "Fifty or more containers on a four-host estate, all on declarative configuration — with packaging discipline · encrypted backups and a restore runbook · loopback-bound services · and one public listener."
 confidence: running
 period: "2020–"
 tech: [NixOS, Proxmox, Docker, Caddy, Tailscale, Borg, Kopia, AWS S3, HDMI-CEC]

content/platform/platform-overview.md

@@ -16,7 +16,7 @@ tags: [platform, devops, nixos, docker, backups]
 
 # Platform & Infrastructure
 
-**Claim.** Fifty or more containers across four hosts, configuration declared rather than hand-applied, encrypted backups on three machines with a restore runbook beside them, and one public listener at the edge.
+**Claim.** Fifty or more containers on a four-host estate, configuration declared rather than hand-applied, encrypted backups on three machines with a restore runbook beside them, and one public listener at the edge.
 
 **Status.** Running. Figures trace to the approved metric set and the infrastructure reference; verified 2026-10-26.