feat(auth): implement all 16 homepage/login/register review items

- add countArticles() (published-only, mirrors news-list) and warm total_articles
- localize homepage metadata; bind articleCount to both stats; unique photo alts
- drop duplicate news date and the mascot preload priorities
- extract shared AuthPageFrame/AuthUsersCards used by /login and /register
- login: localized noindex metadata, session redirect via safeRedirectPath,
  ?from passthrough from proxy, unified auth roster cache keys, registered notice
- register: localized metadata, session redirect to /me, unified cache keys
- add resend-verification flow on /verify with rate-limited non-enumerable action
- add safeRedirectPath() with unit tests
- register form: live requirements checklist + password mismatch guard
- login form: unverified state with resend-link CTA
- honour prefers-reduced-motion in TypewriterText
- add 6 translations across all 25 locales

src/components/shared/public-avatar-contract.test.ts

@@ -4,17 +4,17 @@ import { describe, expect, it } from "vitest";
 
 const compactCallSites = new Map<string, number>([
 	["src/components/top-header.tsx", 1],
+	// /login and /register render their rosters through this shared frame.
+	["src/components/auth/auth-page-frame.tsx", 1],
 	["src/app/(site)/friends/page.tsx", 1],
 	["src/app/(site)/guilds/[id]/page.tsx", 1],
 	["src/app/(site)/leaderboard/page.tsx", 1],
-	["src/app/(site)/login/page.tsx", 2],
 	["src/app/(site)/me/page.tsx", 1],
 	["src/app/(site)/messages/page.tsx", 2],
 	["src/app/(site)/page.tsx", 2],
 	["src/app/(site)/radio/leaderboard/page.tsx", 1],
 	["src/app/(site)/radio/shouts/page.tsx", 1],
 	["src/app/(site)/rankings/page.tsx", 1],
-	["src/app/(site)/register/page.tsx", 2],
 	["src/app/(site)/search/page.tsx", 1],
 	["src/app/(site)/u/[username]/page.tsx", 2],
 ]);