fix: pre-launch UI hardening + KOL reduce-action type, proxy IP relay, settings redesign

Frontend half of the pre-launch audit campaign:

- types/index.ts + kol/KolPageClient.tsx: add missing 'reduce' KolAction
  (backend emits it; frontend lacked the type + color/label maps → undefined
  styling). Adds ACTION_COLOR/actionLabel/postActionLabel entries.
- proxy/[...path]/route.ts: relay real client IP (x-forwarded-for / x-real-ip)
  so the backend rate limiter buckets per-user instead of per-Next-server (BUG-02).
- Settings/BotConfigPanel redesign, paper-mode clarity, copy cleanup.
- Assorted page/display fixes, loading states, Pagination component.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

next.config.mjs

@@ -5,6 +5,7 @@ const withNextIntl = createNextIntlPlugin('./i18n.ts')
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
+  allowedDevOrigins: ['*'],
   async rewrites() {
     return [
       {