cleanup: fix all stale references across .agents/ docs

- Rewrite AGENTS.md: DB as source of truth, MCP knowledge tools, archive refs
- Fix OIKOS.md: seeds/ paths, remove Python-era notes, update deployment status
- Fix commands.md, agent-enrollment.md: archive/knowledge/ links
- Fix all SKILL.md files: remove hosts/*.yaml refs, point to inventory.yaml
- Fix HERMES.md, schema.md, page-templates.md, llm-wiki.md: update paths
- Fix bootstrap.sh: identity check reads inventory.yaml
- Fix README.md, cutover-checklist.md: stale wiki references
- Move convert-wiki.py to archive/ (one-shot done)

.agents/shared/page-templates.md

@@ -160,7 +160,7 @@ session.** A change that touches a container page must also update:
 - The Caddy page site list (if the change affects `*.hubris.network` routing)
 - The DNS / ingress infrastructure pages (if the change affects routing)
 - The `hosts/{hubris,strong}.md` host page (if container count changes)
-- The `inventory.yaml` host entry (source of truth for the `hosts/*.yaml` generation)
+- The `inventory.yaml` host entry (single source of truth)
 - The `infrastructure/topology.md` (generated from inventory, but regen if needed)
 
 The pattern of updating only one page and leaving stale references on others