- Add h1 file title with manual description section to all doc files
- Make all blocks use h2 headings (previously first block was h1)
- Make all sections use h3 headings consistently
- Add title fixes for GitHub, LLM, API, HubSpot, LinkedIn, etc.
- Add --check warning for unfilled manual sections (116 files)
- Fill in descriptions for top-level category files
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>