archive: remove entire archive/ directory and all references

archive/ contained the old narrative wiki (superseded by DB as source
of truth), hermes-plans, oikos-cards, ledger, secrets-issuance, and
SOPS backups — all Python-era artifacts with no ongoing value.

Updated all cross-references in:
- AGENTS.md, README.md
- .agents/operations/commands.md (point to docs/infrastructure/)
- .agents/shared/llm-wiki.md, page-templates.md
- .agents/domains/knowledge/schema.md, operations/schema.md
- .agents/skills/*/SKILL.md
- docs/infrastructure/*.md (removed archive link targets)
- docs-lint/SKILL.md known-baseline note

.agents/skills/config-change-deploy/SKILL.md

@@ -20,7 +20,7 @@ own repo) and get it live, safely.
    [OIKOS.md](../../OIKOS.md) conventions).
 3. Make the change, commit, push to `main`.
 4. The Gitea webhook fires the deploy pipeline for that repo (see
-   [infrastructure/auto-deploy.md](../../../archive/knowledge/infrastructure/auto-deploy.md) for
+   [infrastructure/auto-deploy.md](../../../docs/infrastructure/auto-deploy.md) for
    the exact receiver/reload for this service).
 5. Run the preflight's verification command. If it fails, check
    MCP `tail_log` for the reload/restart error.