Update Homepage dashboard and deployment scripts

- Homepage: Reorganize services by stack instead of by category
- Homepage: Add comprehensive Available to Install sections for all stacks
- Homepage: Update config templates with {{HOMEPAGE_VAR_DOMAIN}} placeholder
- Homepage: Change layout from row to column style
- Scripts: Add sudo requirement to deploy-homelab.sh
- Scripts: Replace NVIDIA driver installation with official installer method
- Scripts: Add build prerequisites and nouveau blacklisting
- Docs: Add AI Automation Guidelines section to docker-guidelines.md
- Docs: Document Homepage auto-update requirements and workflow
- Config: Add bookmarks.yaml template for Homepage
- Config: Add alternatives.yml compose file (Portainer, Authentik)
- Config: Update .env.example and authelia configuration

config-templates/homepage/bookmarks.yaml

@@ -0,0 +1,29 @@
+---
+# Homepage Bookmarks
+
+- Documentation:
+    - GitHub Repository:
+        - icon: github.png
+          href: https://github.com/kelinfoxy/AI-Homelab
+          description: AI-Homelab Repository
+          
+    - Homepage Docs:
+        - icon: homepage.png
+          href: https://gethomepage.dev
+          description: Homepage Documentation
+
+- Useful Links:
+    - DuckDNS:
+        - icon: duckdns.png
+          href: https://www.duckdns.org
+          description: Dynamic DNS Service
+          
+    - Let's Encrypt:
+        - icon: si-letsencrypt
+          href: https://letsencrypt.org
+          description: SSL Certificate Provider
+          
+    - Docker Hub:
+        - icon: docker.png
+          href: https://hub.docker.com
+          description: Container Images