Refined README.md with comprehensive documentation improvements

[Copilot]

Enhanced the README.md with significant improvements to make the project more accessible and professional:

✨ Key Improvements

📊 Added Project Badges

• GitHub Actions build status
• Go version compatibility
• Go Report Card rating

📋 Enhanced Documentation Structure

• Added comprehensive table of contents
• Reorganized content with clear sections
• Improved readability and navigation

🚀 Expanded Features Section

• Detailed feature descriptions with bullet points
• Clear value propositions for users
• Highlighted key capabilities

📖 Comprehensive Usage Examples

• 4 detailed usage scenarios with real-world examples
• Step-by-step command explanations
• Multiple workflow patterns (stdin, file-based, targeted removal)
• Added example with jq for JSON processing

⚠️ Enhanced Known Issues Section

• More prominent warning formatting
• Added mitigation strategies
• Recovery procedures for accidental removals
• Best practices for interface compliance

🤝 Added Contributing Guidelines

• Development setup instructions
• Testing procedures
• Contribution workflow
• Clear guidelines for contributors

🔧 Improved Installation Section

• Added system requirements
• Clear dependency information
• Better formatting

📈 Before vs After

Before: Basic README with minimal examples and simple structure
After: Professional, comprehensive documentation with:

• 228 lines (vs 64 lines originally)
• Complete usage examples
• Professional formatting
• Clear navigation structure
• Actionable troubleshooting guide

The changes maintain all existing functionality while dramatically improving the user experience and project presentation. All tests continue to pass and the tool functionality remains unchanged.

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