Migrate all 17 docs/content/ files from --- YAML to +++ TOML
frontmatter delimiters and key = value syntax.
Update 8 embedded frontmatter examples in 7 documentation pages
to match (configuration, content-organization, getting-started,
security, sections, sitemap, feeds, templates).
Update configuration.md frontmatter reference table: add draft
and aliases fields, correct date type from string to date.
- Add Atom feed generation docs (feeds.md)
- Add CSS minification docs (css.md)
- Fix em dash usage in css.md for natural prose
Completes AI audit (4 layers passed) and documentation gap analysis.
All 39 tests pass, docs site builds successfully.
