Complete TDD8 implementation of index page generation functionality:
Core Features:
- HTML file discovery with optional recursive search (find_html_files)
- Smart title extraction from <title>, <h1>, or filename (extract_html_title)
- Template-integrated index page generation (generate_index_html)
- CLI command 'md-index' with output, template, and recursive options
- Comprehensive error handling for edge cases and malformed files
Implementation Details:
- Reuses existing TEMPLATE_STYLES for consistent styling across all templates
- Proper relative path resolution for cross-directory navigation
- Modular design with helper functions for maintainability
- HTML parsing patterns extracted as module-level constants for performance
Tests: 23 comprehensive tests covering discovery, generation, CLI integration, and edge cases
Files: markitect/plugins/builtin/markdown_commands.py, tests/test_issue_136_index_generation.py
Status: All tests passing, full TDD8 cycle completed (RED→GREEN→REFACTOR→DOCUMENT)
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>