port build_host_files.py to Go, simplify Hermes MCP, cutover final

- cmd/hermes/main.go: removed redundant /mcp endpoint — Hermes gateway now
  serves only /query + /healthz. MCP goes direct to API (:8090/mcp).
- cmd/oikos/build_hosts.go: Go port of mcp/build_host_files.py as
  'oikos build-hosts'. Reads inventory.yaml, writes hosts/*.yaml.
- cmd/oikos/main.go: added build-hosts role.
- docker-compose.yml: hermes service simplified.
- apps/105: all 6 Oikos services stopped + disabled (confirmed inactive).
- Watchdog cron installed, API stop/restart verified.
- Infisical bootstrap pending (image pull timeout — retry separately).

Remaining:
- Port bin/homelab CLI to Go (separate plan — large surface)
- Caddy DNS push (needs dtoro/caddy-conf repo access)
- Rollback drill

hosts/house.yaml

@@ -1,26 +1,25 @@
-# Generated by mcp/build_host_files.py from inventory.yaml.
-# Do NOT edit by hand — your changes will be overwritten.
-# Source of truth: ../inventory.yaml
-name: house
-kind: lxc
-os: linux
-role: family-planner
-state: active
-host: strong
-pve_id: 129
-lan_ip: 192.168.8.244
-mesh_globals:
-  primary: netbird
-  accepted:
-  - netbird
-  - tailscale
-public_host: house.hubris.network
-notes:
-- Docker host for Yuvomi (family planner). Created 2026-06-26.
-- Migrated from hubris to strong 2026-07-05 (Phase 1 of strong migration plan).
-- Runs Yuvomi container + WebDAV doc bridge to paperless
-- 192.168.8.212 was the hubris IP before migration (briefly picked up by teddycloud via DHCP; teddycloud
-  has since been given a static IP, see hosts.teddycloud)
+# Generated by oikos build-hosts from inventory.yaml.
+# Do NOT edit by hand.
+
 age_pubkey: age1s07zs83ehtlg8jtwvr75ltc3c4cdlemfwjuxrwjtwkqxkl9tpggsyrzn2h
+host: strong
+kind: lxc
+lan_ip: 192.168.8.244
 mcp_endpoint: https://mcp.hubris.network/mcp
+mesh_globals:
+  accepted:
+    - netbird
+    - tailscale
+  primary: netbird
+name: house
+notes:
+  - Docker host for Yuvomi (family planner). Created 2026-06-26.
+  - Migrated from hubris to strong 2026-07-05 (Phase 1 of strong migration plan).
+  - Runs Yuvomi container + WebDAV doc bridge to paperless
+  - 192.168.8.212 was the hubris IP before migration (briefly picked up by teddycloud via DHCP; teddycloud has since been given a static IP, see hosts.teddycloud)
+os: linux
+public_host: house.hubris.network
+pve_id: 129
+role: family-planner
 secrets_issuance_endpoint: https://secrets.hubris.network/issue
+state: active