fix(contrast,brand): full audit sweep — white-on-white + cross-component renames
- forum/page.tsx: text-white → navy on TopThreads, Following feed, Discover feed cards, search input, select, category grid, Community Guidelines; greys lightened where applicable for new white surface
- forum/[slug]/page.tsx: same sweep for category page (h1, h2, thread rows, new-thread form, search/sort bar) + hover:bg-[#1e2a3a] → slate-200
- forum/user/[username]/page.tsx: text-[#cccccc]/[#bfbfbf]/[#e0e0e0] + bg-[#222] tag chip + #9ca3af labels → readable on white card
- authors/[slug]/page.tsx: profile contact/facts cards readable
- search/page.tsx: h1 + h2 navy + hover slate
- news/[slug]/NewsArticleDetailClient.tsx: toast color
- news/NewsPageClient.tsx: import cleanExcerpt, strip HTML from listing excerpts
- privacy/terms/page.tsx: h1 + h2 + body greys to readable navy/slate
- error.tsx: page-level text to navy + button border slate
- about/page.tsx: page body text + Stat/Block cards to white surface w/ navy text
- Header.tsx: mobile hamburger + dropdown links → readable navy + slate border
- NotificationCenter.tsx: hover + unread bg flipped to light blue
- AISuggestedArticles.tsx: hover bg → slate-200
- Footer.tsx: link greys to #475569 + #DCE6F2 borders
- AskBBAI.tsx: copy rename 'BB AI' → 'AV Beat AI' (greeting, button, header, aria)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>