archive: prune stale dirs, move actual content to docs/

Deleted stale (Python-era artifacts, superseded by DB):
- archive/oikos-cards/ (46 files, predecessor to DB entity graph)
- archive/ledger/ (5-line JSONL fragment, superseded by DB audit log)

Moved to docs/ (actual, current architecture docs):
- docs/infrastructure/ — 12 infrastructure docs (network, DNS, mesh,
  SSH, ingress, media-permissions, backups, homelab-context, auto-deploy,
  VPS-hardening, monitoring, check-lifecycle)
- docs/secrets/ — secrets README and rotation runbook
- docs/GLOSSARY.md — 28-term homelab glossary

Added STALE.md markers to hermes-plans/ and secrets-issuance/.
Added MOVED.md pointers in archive sources.
Updated docs/index.md to include new paths.

archive/knowledge/index.md

@@ -1,14 +1,19 @@
-# Knowledge
+# Knowledge (archived)
 
-The durable, authoritative current-state documentation of the homelab: one page per node and per
-cross-cutting system, synthesized from live state and evidence. Structure and rules are in
-[the knowledge schema](../.agents/domains/knowledge/schema.md).
+> **Status: Stale — historical reference only, last updated 2026-07-06.**
+> The DB is now the single source of truth for all structured data and
+> knowledge (bootstrapped from `seeds/knowledge.yaml`). Use MCP
+> `search_knowledge` / `get_entity_knowledge` for live queries.
+>
+> Infrastructure architecture docs have been moved to
+> [`docs/infrastructure/`](../../docs/infrastructure/). See `MOVED.md` there
+> for what moved where.
 
 | Section | What it covers |
 |---------|----------------|
-| [wiki/hosts/](wiki/hosts/index.md) | Proxmox host narratives — `hubris`, `strong`. |
-| [wiki/containers/](wiki/containers/index.md) | LXC fleet — one page per container, plus the master table and archaeology. |
-| [wiki/vms/](wiki/vms/index.md) | Virtual machines — ZimaOS, Home Assistant OS. |
-| [wiki/infrastructure/](wiki/infrastructure/index.md) | Cross-cutting systems — DNS, ingress, mesh, storage, auth, monitoring, generated topology. |
+| [hosts/](hosts/index.md) | Proxmox host narratives — `hubris`, `strong`. |
+| [containers/](containers/index.md) | LXC fleet — one page per container, plus the master table and archaeology. |
+| [vms/](vms/index.md) | Virtual machines — ZimaOS, Home Assistant OS. |
+| [infrastructure/](infrastructure/index.md) | Cross-cutting systems — **docs moved to `docs/infrastructure/`**. |
+| [GLOSSARY.md](GLOSSARY.md) | **Moved to `docs/GLOSSARY.md`**. |
 | [sources/](sources/index.md) | External reference docs and the pointer to incident evidence. |
-| [GLOSSARY.md](GLOSSARY.md) | Term definitions. |

archive/knowledge/infrastructure/MOVED.md

@@ -0,0 +1,20 @@
+# Moved to `docs/infrastructure/`
+
+The infrastructure architecture docs have been moved to
+[`docs/infrastructure/`](../../docs/infrastructure/):
+
+- [network.md](../../docs/infrastructure/network.md)
+- [dns.md](../../docs/infrastructure/dns.md)
+- [mesh.md](../../docs/infrastructure/mesh.md)
+- [ssh-access.md](../../docs/infrastructure/ssh-access.md)
+- [ingress.md](../../docs/infrastructure/ingress.md)
+- [media-permissions.md](../../docs/infrastructure/media-permissions.md)
+- [backups.md](../../docs/infrastructure/backups.md)
+- [homelab-context.md](../../docs/infrastructure/homelab-context.md)
+- [auto-deploy.md](../../docs/infrastructure/auto-deploy.md)
+- [vps-hardening.md](../../docs/infrastructure/vps-hardening.md)
+- [monitoring.md](../../docs/infrastructure/monitoring.md)
+- [oikos-check-lifecycle.md](../../docs/infrastructure/oikos-check-lifecycle.md)
+
+The copies here are kept for archive continuity but are NOT the source of
+truth — update the docs/ copies instead.