Release v2.0.6 - README Improvements

What's Changed

📝 Documentation Improvements

• Improved README structure with GitHub admonitions
• Added FAQ section
• Added LLM configuration quick reference table
• Reduced emoji usage for cleaner appearance
• Added npm downloads badge

📊 Technical Changes

• README.md: 150 lines added, 185 lines removed (net -35 lines)
• CHANGELOG.md updated with v2.0.5 and v2.0.6 entries

Full Changelog: v2.0.5...v2.0.6