- Rewrite messages.ts to plain string key maps (remove MessageDescriptor)
- Rewrite useMessages hook to expose t from useTranslations() directly
- Rename formatMessage → t across 193 consumer files
- Replace custom FormattedMessage component with next-intl t.rich()
- Update 52 language files to use rich text tags (<b>, <a>)
- Remove all direct imports from @/components/messages in favor of useMessages()
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace the separate 240px WebsiteNav sidebar with website navigation
integrated into the main SideNav. When a websiteId is active, SideNav
shows a back arrow, WebsiteSelect dropdown, and grouped nav items
instead of the main links. Extract shared useWebsiteNavItems hook used
by both SideNav and WebsiteNav (still used by MobileNav).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
