db as source of truth: wiki→seeds, archive old artifacts, knowledge ingestion

- Migrations 010 (content_hash) + 011 (search tsvector column)
- new: internal/knowledge/seed.go — knowledge seed ingest engine
- new: internal/httpapi/knowledge.go — SearchKnowledge + GetEntityKnowledge
- wire knowledge ingest into oikos seed pipeline
- convert all 36 wiki docs + 6 investigations + 12 runbooks → seeds/knowledge.yaml
- archive: knowledge/wiki/→archive/, oikos/cards/→archive/, .hermes/plans/→archive/
- delete: 9 superseded Python kernel files, ledger/, mcp/build_host_files.py
- remove empty knowledge/ directory tree

archive/knowledge/vms/108-haos.md

@@ -0,0 +1,44 @@
+# 108 — `haos-16.3`
+
+Home Assistant OS — the only VM on hubris (HAOS doesn't run cleanly in an LXC, hence the qm tenant).
+
+## At a glance
+- **Type:** QEMU VM
+- **HAOS version:** 16.3 (last verified)
+- **IP:** `192.168.8.101`
+- **Resources:** 4 GiB RAM, 32 GiB boot disk
+- **Public hostname:** [`home.hubris.network`](../infrastructure/dns.md) → [caddy (121)](../containers/121-caddy.md) → `192.168.8.101:8123`
+
+## Auth
+
+Native OIDC via the HACS integration `christiaangoossens/hass-oidc-auth` (repo `https://github.com/christiaangoossens/hass-oidc-auth`).
+
+Key gotchas:
+- HAOS containers don't honor the Network-panel DNS. Set Supervisor DNS via:
+  ```
+  ha dns options --servers "dns://192.168.8.180" --servers "dns://1.1.1.1"
+  ```
+  so OIDC discovery resolves internally to [authentik (124)](../containers/106-auth-outpost.md).
+- Authentik app slug in the discovery URL is whatever was set in Authentik — confirm via the DB rather than guessing. User set `home-assistant` (with hyphen).
+- YAML config:
+  - `features.automatic_user_linking: true` — link to existing HA users by `preferred_username` match (otherwise a duplicate is created).
+  - `features.default_redirect: true` — skip the welcome-splash so users land on the normal HA login page.
+- Run `ha core restart` after each config change — HA caches DNS and OIDC discovery across frontend reloads.
+
+## Telemetry
+
+HA pulls Proxmox metrics via the official Proxmox VE integration. As of 2026-04-21 [claudio-monitor](../infrastructure/monitoring.md) stopped publishing to MQTT/REST (commit `82f0596`) — HA gets metrics from PVE directly; claudio-monitor focuses on alerting.
+
+## Related
+- [Authentik (124)](../containers/106-auth-outpost.md)
+- [Caddy (121)](../containers/121-caddy.md)
+- [DNS](../infrastructure/dns.md)
+- [Monitoring](../infrastructure/monitoring.md)
+
+## Changelog
+
+### 2026-04-28 — wiki entry created
+Initial documentation.
+
+### 2026-04-21 — wired into Authentik via HACS hass-oidc-auth
+Supervisor DNS pointed at LXC 124 dnsmasq; YAML features for auto-linking + default redirect.