Update documentation with README content and improve organization using MkDocs

[Copilot]

This PR updates the documentation in /docs/index.md to synchronize with the content from readme.md and reorganizes the documentation structure for better user experience using MkDocs.

Changes Made

Content Synchronization

• Added GitHub badges from readme.md to show build status and DeepWiki integration
• Integrated Quick Usage section with practical curl examples for immediate API testing
• Fixed incomplete git clone command in the Docker installation section
• Added documentation links section to provide clear navigation to different resources

Improved Documentation Structure

The documentation has been reorganized into a modular structure with dedicated pages:

• index.md: Main overview with getting started guidance and navigation links
• quick-start.md: Immediate usage examples with curl commands and expected responses
• installation.md: Comprehensive setup guides for both local development and Docker deployment
• api-reference.md: Detailed API endpoint documentation with parameters and response formats

MkDocs Integration

• Updated mkdocs.yml with proper navigation structure for the new pages
• Maintained Material theme with GitHub integration and edit capabilities
• Tested build process to ensure all pages generate correctly

Benefits

1. Better User Experience: Users can now quickly find what they need through organized navigation
2. Content Consistency: Documentation is now synchronized with the README and includes all relevant information
3. Improved Accessibility: Quick start examples allow users to test the API immediately
4. Professional Presentation: GitHub badges and structured layout provide a more polished appearance

The documentation now provides a superior browsing experience while maintaining all the comprehensive information from both the original docs and README files.

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