Document VM 102 security stack and update IPs to 192.168.1.105.

Add ARCHITECTURE.md and HOMELAB_IPS.md, refresh inventory and app configs
for Postgres, Neo4j, Homelab Command, pgAdmin, Homarr, and Homepage links.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/home-security-agent/.env.example

@@ -2,8 +2,8 @@
 TELEGRAM_BOT_TOKEN=
 TELEGRAM_CHAT_ID=
 
-# PostgreSQL — observaties voor dashboard http://192.168.1.211:8765
-PG_HOST=192.168.1.211
+# PostgreSQL — observaties voor dashboard http://192.168.1.105:8765
+PG_HOST=192.168.1.105
 PG_PORT=5433
 PG_USER=mo
 PG_PASSWORD=