- Add project introduction and features
- Add quick start guide (development and production)
- Add configuration documentation
- Add usage instructions
- Add mobile support section
- Add development guide and directory structure
- Add responsive design for mobile devices (≤768px)
- Switch from horizontal to vertical layout on mobile
- Hide middle divider panel on mobile
- Optimize button sizes for mobile touch interaction
- Improve input field and button alignment on mobile
- Unify login page styling with share page
- Add AGENTS.md with build commands and code style guidelines
- Add dev.sh and make.sh for development and production builds
- Implement single binary build with embedded frontend using embed.FS
- Change auth configuration from CLI flag to env variables (USHARE_USERNAME, USHARE_PASSWORD)
- Set default credentials: admin / ushare@123
- Fix static file serving for SPA routes