docs: move narrative wiki under knowledge/wiki/ (phase 3)

Problem: node and cross-cutting narratives lived at the repo root
(containers/, vms/, infrastructure/, host .md files), interleaved with the
machine-readable substrate.

Change:
- Move containers/ -> knowledge/wiki/containers/, vms/ -> knowledge/wiki/vms/,
  infrastructure/ -> knowledge/wiki/infrastructure/, hosts/{hubris,strong}.md ->
  knowledge/wiki/hosts/, infrastructure/references/ -> knowledge/sources/references/,
  GLOSSARY.md -> knowledge/GLOSSARY.md.
- Add knowledge/{index.md,log.md,sources/index.md} scaffolding.
- Rewrite all relative links repo-wide via a path-resolving mapper (inbound +
  outbound + between-moved-files), including .hermes/, runbooks, operations,
  investigations, plans, README, AGENTS.
- Repoint inventory.yaml doc_page fields and regenerate hosts/*.yaml (which
  embed doc_page); update oikos/gen-topology.py output path, candidate doc
  paths, and footer links; update code-comment doc paths.

Substrate untouched in place: inventory.yaml, hosts/*.yaml (regenerated,
idempotent), oikos/ code, mcp/, secrets/, bin/.

Verification:
- Logical broken-link set identical to pre-move baseline (net 128 -> 127; the
  topology regen fixed one, introduced none). Remaining are pre-existing refs
  to destroyed/archived nodes, out of scope for this move.
- gen-topology.py --check exit 0 (in sync); cards carry knowledge/wiki/ doc paths.
- build_host_files.py idempotent; all inventory doc_page targets resolve.
- MCP contract verified: get_page/search_docs/get_changelog resolve moved pages.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

AGENTS.md

@@ -33,10 +33,10 @@ the operator to run `homelab client add <hostname>` from an existing client.
 - `/opt/homelab-context/inventory.yaml` — every host, LXC, VM, and workstation
   with their mesh addresses, roles, and service mappings. Treat this file as
   authoritative; anything you read in narrative pages should agree with it.
-- `/opt/homelab-context/infrastructure/mesh.md` — Tailscale → Netbird state.
+- `/opt/homelab-context/knowledge/wiki/infrastructure/mesh.md` — Tailscale → Netbird state.
   Both meshes are accepted today; Netbird is preferred for new traffic.
-- `/opt/homelab-context/infrastructure/dns.md` — split-horizon DNS via
-  Technitium on [dns (107)](../containers/107-dns.md). `*.hubris.network`
+- `/opt/homelab-context/knowledge/wiki/infrastructure/dns.md` — split-horizon DNS via
+  Technitium on [dns (107)](knowledge/wiki/containers/107-dns.md). `*.hubris.network`
   resolves to 192.168.x.x on the LAN and to mesh addresses off-LAN.
 - `/opt/homelab-context/operations/commands.md` — the operator's cheatsheet
   for pct, caddy, DNS, and the Oikos command surface. Use these verbs when
@@ -75,8 +75,9 @@ Grep is fine for browsing or when MCP is unreachable.
 
 ## 4. Wiki conventions
 
-- Pages live under `containers/`, `hosts/`, `vms/`, `infrastructure/`,
-  `investigations/`, `operations/`. Cross-link liberally; orphans are bugs.
+- Narrative pages live under `knowledge/wiki/{containers,hosts,vms,infrastructure}/`;
+  procedural pages under `investigations/`, `operations/`, `runbooks/`, `plans/`.
+  Cross-link liberally; orphans are bugs.
 - Every page ends with a `## Changelog` section, entries in reverse-chrono
   order:
 
@@ -105,7 +106,7 @@ Grep is fine for browsing or when MCP is unreachable.
   a valid `--approval-id` from `homelab approval request` — see OIKOS.md.
   For ad-hoc work, SSH and edit directly — but commit changes that touch
   tracked configs (caddy, gitea custom, artifacto, mule-image, etc.; see
-  `infrastructure/auto-deploy.md`).
+  `knowledge/wiki/infrastructure/auto-deploy.md`).
 - **Wiki updates**: same-session rule applies to any meaningful state change
   this client makes.