1. Introduction
3. User Guide
4. 1. Installation
5. 2. Getting Started
6. 3. Configuration
7. 4. CLI Usage
8. 5. mdBook Integration
9. 6. CI vs Preprocessor
10. 7. Troubleshooting
12. Reference
13. 8. Rules Reference
14. 1. 8.1. Standard Rules
    2. 1. 8.1.1. Heading Rules
       2. 1. 8.1.1.1. MD001 - Heading Increment
          2. 8.1.1.2. MD018 - No Space After Hash
          3. 8.1.1.3. MD019 - Multiple Spaces After Hash
          4. 8.1.1.4. MD020 - No Space in Closed Headings
          5. 8.1.1.5. MD021 - Multiple Spaces in Closed Headings
          6. 8.1.1.6. MD023 - Headings Start at Beginning
       3. 8.1.2. List Rules
       4. 1. 8.1.2.1. MD030 - Spaces After List Markers
       5. 8.1.3. Whitespace Rules
       6. 1. 8.1.3.1. MD009 - No Trailing Spaces
          2. 8.1.3.2. MD010 - Hard Tabs
          3. 8.1.3.3. MD012 - Multiple Consecutive Blank Lines
          4. 8.1.3.4. MD027 - Multiple Spaces After Blockquote
          5. 8.1.3.5. MD047 - Files End with Newline
       7. 8.1.4. Link Rules
       8. 1. 8.1.4.1. MD034 - Bare URL Used
       9. 8.1.5. Code Rules
       10. 1. 8.1.5.1. MD040 - Fenced Code Blocks Language
       11. 8.1.6. Style Rules
       12. 1. 8.1.6.1. MD013 - Line Length
    3. 8.2. mdBook Rules
    4. 1. 8.2.1. MDBOOK001 - Code Block Language Tags
       2. 8.2.2. MDBOOK002 - Invalid Internal Link
       3. 8.2.3. MDBOOK003 - Invalid SUMMARY.md Structure
       4. 8.2.4. MDBOOK004 - No Duplicate Chapter Titles
       5. 8.2.5. MDBOOK005 - Orphaned Files
       6. 8.2.6. MDBOOK006 - Invalid Cross-Reference Links
       7. 8.2.7. MDBOOK007 - Invalid Include Directive
       8. 8.2.8. MDBOOK008 - Invalid Rustdoc Include
       9. 8.2.9. MDBOOK009 - Invalid Playground Configuration
       10. 8.2.10. MDBOOK010 - Invalid Preprocessor Configuration
       11. 8.2.11. MDBOOK011 - Invalid Template Syntax
       12. 8.2.12. MDBOOK012 - Invalid Include Line Ranges
       13. 8.2.13. MDBOOK025 - Multiple H1 in SUMMARY.md
15. 9. Configuration Reference
16. 10. Example Configuration
17. 11. API Documentation
18. 12. Tool Comparison
20. Development
21. 13. Library API
22. 14. Contributing
23. 15. Architecture
24. 16. Testing Strategy