Remove obsolete Coolify deployment files

- Removed deploy-to-coolify.example.sh (replaced by deploy-to-apps.example.sh)
- Removed COOLIFY_SETUP.md (replaced by DEPLOYMENT_GUIDE.md)
- Updated .gitignore to remove deploy-to-coolify.sh reference
- Updated README troubleshooting to use SAAC API instead of direct Coolify API

All users now deploy via the SAAC API at apps.startanaicompany.com rather than directly to Coolify.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -13,6 +13,5 @@ deploy_key
 # Deployment keys and scripts
 deploy_key*
 deploy.sh
-deploy-to-coolify.sh
 deploy-to-apps.sh
 deployment-info.txt