🎁 Create beautiful download page for complete project

✅ Added styled download page with all project info
✅ Included quick start guide and installation steps
✅ Listed all features and system URLs
✅ Added admin login credentials
✅ Provided documentation links

Download page: /download-project.html
Download link: https://www.genspark.ai/api/files/s/NS7xhnY2
Package size: 69 MB compressed
