Remove internal infrastructure references from user documentation

- Removed SAAC API repository link (internal implementation detail)
- Changed DNS target from app.coolify.io to apps.startanaicompany.com
- Updated .env.example to only reference SAAC_API_KEY (not internal tokens)
- Simplified support section to only show template issues

Users should only interact with the SAAC API as a service, not see internal implementation.

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

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

deploy-to-apps.example.sh

@@ -177,7 +177,7 @@ echo "📝 Next Steps:"
 echo "  1. Configure Cloudflare DNS (if not already done):"
 echo "     - Add CNAME record:"
 echo "     - Name: ${SUBDOMAIN}recruit"
-echo "     - Target: app.coolify.io"
+echo "     - Target: apps.startanaicompany.com"
 echo "     - Proxy: Enabled"
 echo ""
 echo "  2. Wait 2-3 minutes for deployment to complete"