KOL count: 29 → 25 across marketing/SEO copy

Backend KOL_FEEDS trimmed from 29 to 25 (dead feeds removed).
Sync all hardcoded count mentions:
- layout.tsx JSON-LD, page.tsx (metric + comparison + copy)
- kol/page.tsx, KolPageClient.tsx ("and 26 more" → "and 22 more")
- glossary/page.tsx, opengraph-image.tsx
- public/llms.txt, llms-full.txt
- drop removed KOLs (Dragonfly Capital, Nic Carter) from named lists

Bundles other in-flight frontend work already in the working tree.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/[locale]/btc/page.tsx

@@ -1,4 +1,4 @@
-import { redirect } from 'next/navigation'
+import { permanentRedirect } from 'next/navigation'
 
 interface LegacyBtcPageProps {
   params: Promise<{ locale: string }>
@@ -6,5 +6,5 @@ interface LegacyBtcPageProps {
 
 export default async function LegacyBtcPage({ params }: LegacyBtcPageProps) {
   const { locale } = await params
-  redirect(`/${locale}/macro`)
+  permanentRedirect(`/${locale}/macro`)
 }