Sidebar Generation

Plugin support: VitePress itself expects a manual default-theme sidebar configuration. It does not natively discover Markdown files and generate the sidebar.

This site adds vitepress-sidebar around the VitePress configuration. It scans docs/en/ and docs/ja/, uses the numeric order and title frontmatter on these pages, and produces the sidebar now visible beside this page. Adding a new eligible Markdown page is therefore enough for this project's navigation at build time.

The two approaches

Approach	Where navigation is declared	Tradeoff
Native VitePress	themeConfig.sidebar in config	Explicit labels, grouping, and links
This site	Filesystem plus vitepress-sidebar	Less repetition; plugin behavior and conventions

// Native VitePress: a manual example
themeConfig: {
  sidebar: [
    { text: 'Criteria', items: [{ text: 'GFM', link: '/en/criteria/gfm' }] }
  ]
}

The plugin is a convenience layer, not evidence of native auto-generation.