- Add CONTRIBUTING.md with development setup, code standards, and contribution workflow
- Add DISCLAIMER.md with privacy warnings, liability disclaimers, and user responsibilities
- Add SECURITY.md for code security and privacy guidelines
- Add docs/CONFIGURATION.md with backend configuration and database setup instructions
- Add docs/DEPLOYMENT.md with Docker and local development deployment guides
- Add docs/FAQ.md with frequently asked questions and troubleshooting
- Add docs/LLM_PROVIDERS.md with 10+ LLM platform configurations and API key setup
- Update README.md with documentation navigation table and streamlined feature descriptions
- Consolidate scattered documentation into organized docs/ directory for better maintainability
lintsinghua