feat: Add Open WebUI and code-server for AI development

Add Open WebUI for ChatGPT-like interface to local Ollama models
with RAG capabilities for documentation Q&A. Add code-server for
web-based VS Code access with AI coding assistants.

- Open WebUI accessible at ai.fig.systems
- code-server accessible at code.fig.systems
- Both integrated with local Ollama instance

compose/services/code-server/compose.yaml

@@ -0,0 +1,42 @@
+# code-server - VS Code in the browser with AI coding support
+# Docs: https://github.com/coder/code-server
+
+services:
+  code-server:
+    container_name: code-server
+    image: lscr.io/linuxserver/code-server:latest
+    restart: unless-stopped
+
+    env_file:
+      - .env
+
+    volumes:
+      - ./config:/config
+      # Mount your homelab directory for editing
+      - /home/eduardo_figueroa/homelab:/config/workspace/homelab
+
+    networks:
+      - homelab
+
+    labels:
+      # Traefik
+      traefik.enable: true
+      traefik.docker.network: homelab
+
+      # Web UI
+      traefik.http.routers.code-server.rule: Host(`code.fig.systems`)
+      traefik.http.routers.code-server.entrypoints: websecure
+      traefik.http.routers.code-server.tls.certresolver: letsencrypt
+      traefik.http.services.code-server.loadbalancer.server.port: 8443
+
+      # SSO Protection
+      traefik.http.routers.code-server.middlewares: tinyauth
+
+      # Homarr Discovery
+      homarr.name: Code Server (IDE)
+      homarr.group: Services
+      homarr.icon: mdi:microsoft-visual-studio-code
+
+networks:
+  homelab:
+    external: true

compose/services/open-webui/compose.yaml

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+# Open WebUI - ChatGPT-style interface for Ollama
+# Docs: https://docs.openwebui.com/
+
+services:
+  open-webui:
+    container_name: open-webui
+    image: ghcr.io/open-webui/open-webui:main
+    restart: unless-stopped
+
+    env_file:
+      - .env
+
+    volumes:
+      - ./data:/app/backend/data
+
+    environment:
+      # Ollama connection
+      - OLLAMA_BASE_URL=http://ollama:11434
+
+      # Enable RAG (Retrieval-Augmented Generation)
+      - ENABLE_RAG_WEB_SEARCH=true
+      - RAG_WEB_SEARCH_ENGINE=searxng
+
+      # Web search (optional, requires searxng)
+      - ENABLE_RAG_WEB_SEARCH=false
+
+      # Default model
+      - DEFAULT_MODELS=qwen2.5-coder:7b
+
+    networks:
+      - homelab
+
+    labels:
+      # Traefik
+      traefik.enable: true
+      traefik.docker.network: homelab
+
+      # Web UI
+      traefik.http.routers.open-webui.rule: Host(`ai.fig.systems`)
+      traefik.http.routers.open-webui.entrypoints: websecure
+      traefik.http.routers.open-webui.tls.certresolver: letsencrypt
+      traefik.http.services.open-webui.loadbalancer.server.port: 8080
+
+      # No SSO - Open WebUI has its own auth system
+      # Uncomment to add SSO protection:
+      # traefik.http.routers.open-webui.middlewares: tinyauth
+
+      # Homarr Discovery
+      homarr.name: Open WebUI (AI Chat)
+      homarr.group: Services
+      homarr.icon: mdi:robot
+
+networks:
+  homelab:
+    external: true