Top navigation, locale controls, theme controls, and mobile navigation affordances.

Uses

• themeConfig.nav
• themeConfig.logo
• sidebar state from the default-theme context
• page table of contents data

Behavior

• shows desktop nav links when themeConfig.nav is set
• uses a mobile nav dialog on small screens
• includes LocaleSelector and ThemeSelector
• shows mobile sidebar and table-of-contents toggles only when content exists
• marks nav links active using activeMatch or the item link