Phase 1: content source of truth — 40 documents across six areas

Satisfies the Phase 1 Definition of Done:

- content/ validates cleanly against the frozen schema. `make validate`
  reports OK: 40 document(s) validated, 0 violations.
- Six areas exist, each with an L1 entry: ai-overview, platform-overview,
  edge-overview, products-overview, history-overview, about-overview.
- All six areas have an L2 entry: ai-systems, platform-estate, edge-fleet,
  products-business, history-engagements, about-narrative.
- 28 L3 artefact stubs under content/<area>/l3/. Every artefacts[].url in
  every document resolves to one of them; the validator proves there are no
  dangling references (and a deliberately broken copy exits 1).
- Every metric value traces to a source line in the evidence notes or the
  approved metric set in reference/content-map.md (per-metric citations are
  recorded in the AUD-131 completion comment).
- Every document carries confidence and last_verified=2026-10-26; the
  validator rejects a missing or non-canonical value.
- docs/content-redaction.md records the redaction pass: identifiers, third
  party personal data, credentials and infrastructure detail excluded, with
  reasons, plus the two numbers that are reported rather than smoothed.

Honesty positions held: 3 businesses active (12 adoptions over time),
Where-Woof deployed and pre-market, failures kept in (edge-failures), no
promotion of in-progress work to delivered.

No site code, no templates, no CSS, no rendering (Phase 2).

content/platform/l3/platform-containers.md

@@ -0,0 +1,31 @@
+---
+id: platform-containers
+area: platform
+level: 3
+title: "Artefact — Container inventory"
+claim: "Fifty or more containers across the estate — each with its own port · its own folder · and a memory cap equal to its swap cap."
+confidence: running
+period: "2020–"
+tech: [Docker, Compose, Caddy, Proxmox]
+metrics: [{label: "containers in the estate", value: 50}, {label: "memory cap rule", value: "mem_limit equals memswap_limit"}]
+artefacts: []
+public: true
+last_verified: 2026-10-26
+tags: [platform, docker, artefact]
+---
+
+# Artefact — Container inventory
+
+**Status: stub.** A digest of the inventory — grouped by purpose, with addresses removed — lands in Phase 7.
+
+## What the artefact is
+
+The inventory generated from the hosts, grouped by purpose: media and file services, home automation, the AI services, the public edge, and the build tooling. For each service the same three facts are recorded — port, configuration folder, memory cap.
+
+## What it proves
+
+That the estate is inventoried rather than accumulated, and that the resource rules are applied per service instead of being a policy on a wiki page.
+
+## When it is delivered
+
+Phase 7, generated from the live hosts. Counts follow the approved metric set; the exact number is regenerated at capture time.