The /builds/ page returned 404 because website/content/builds/ was fully
gitignored — Hugo had no content to generate the section landing page.
Fix:
- Narrow .gitignore to only ignore year-subdirectories (YYYY/) so that
_index.md can be committed as a static fallback.
- Add website/content/builds/_index.md with section description.
- Enhance generate_build_history.py to fetch and display commit datetime
alongside title, and render _index.md as a flat list of all builds
(newest-day first) so the section landing page is useful immediately.
Fixes#82
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
