Add complete homelab documentation and configurations

Documentation:
- OpenCode + LiteLLM integration guide
- LiteLLM complete setup with 16 models
- Gitea centralized configuration guide
- Testing procedures and verification
- API keys setup instructions

Configurations:
- OpenCode config pointing to LiteLLM
- Updated LiteLLM config with all models
- Nextcloud docker-compose template

Scripts:
- Gitea setup automation
- OpenCode testing script

Infrastructure:
- Gitea: 192.168.88.200:3000
- LiteLLM: 192.168.88.27:4000
- Nextcloud: 192.168.88.62

siklos-docker-services.md

@@ -13,6 +13,7 @@
 | Container | Image | Port(s) | Compose Path |
 |---|---|---|---|
 | pihole | pihole/pihole:latest | 53, 8080 | /srv/docker/pihole/ |
+| open-webui | ghcr.io/open-webui/open-webui:main | 3000 | /srv/docker/open-webui/ |
 | onlyoffice | onlyoffice/documentserver | 8880 | /srv/docker/media/ |
 | homarr | homarr:latest | 7575 | /srv/docker/homarr/ |
 | uptime-kuma | uptime-kuma:2 | 3001 | /srv/docker/uptime-kuma/ |
@@ -36,6 +37,12 @@
 | grav | linuxserver/grav:latest | 8585 | /srv/docker/grav/ |
 | watchtower | containrrr/watchtower | — | /srv/docker/watchtower/ |
 
+## Open WebUI
+- URL: `https://ai.jgitta.com`
+- Port: 3000
+- Compose: `/srv/docker/open-webui/docker-compose.yml`
+- Connects to Ollama backend running on ThinkStation (192.168.88.41, no external port)
+
 ## Migrated Services
 - **PhotoPrism** and **Immich** were migrated to VM113 (photos, 192.168.88.32) in April 2026
 - See `/home/jgitta/Documents/Claude/Projects/Photos/photos.md` for current details