homepage: neon dual-speed ticker + emerald/cyan palette pass

- New DualSpeedTicker component (CSS keyframes, GPU-accelerated,
  pause on hover, 28px rows, 17s BEAT / 40s FORUM, refresh 5min)
- /api/ticker/beat-news: last 7 days from bb.native_articles
- /api/ticker/forum-posts: latest threads + replies interleaved
- Mounted at the bottom of Header so every page gets it
- Scoped .bb-neon palette on homepage root: section heads +
  text-shadow glow, neon-tinted card borders, emerald→cyan button
  gradient, cyan hover state on links, subscribe boxes neon-bordered
- CSS-only — no layout changes

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/api/ticker/beat-news/route.ts

@@ -0,0 +1,46 @@
+import { NextResponse } from 'next/server';
+import { createClient } from '@supabase/supabase-js';
+
+export const runtime = 'nodejs';
+export const revalidate = 300; // 5 minutes
+
+const SUPABASE_URL = process.env.NEXT_PUBLIC_SUPABASE_URL!;
+const SUPABASE_ANON = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!;
+
+export async function GET() {
+  const sb = createClient(SUPABASE_URL, SUPABASE_ANON, {
+    db: { schema: 'bb' },
+    auth: { persistSession: false },
+  });
+
+  const cutoff = new Date(Date.now() - 7 * 86400000).toISOString();
+
+  const { data, error } = await sb
+    .from('native_articles')
+    .select('id, slug, title, category, published_at')
+    .eq('status', 'published')
+    .gte('published_at', cutoff)
+    .order('published_at', { ascending: false })
+    .limit(30);
+
+  if (error) {
+    return NextResponse.json({ error: error.message, items: [] }, { status: 500 });
+  }
+
+  const items = (data || []).map((a) => ({
+    id: a.id,
+    href: `/articles/${a.slug}`,
+    title: a.title,
+    category: a.category || null,
+    published_at: a.published_at,
+  }));
+
+  return NextResponse.json(
+    { items },
+    {
+      headers: {
+        'Cache-Control': 'public, s-maxage=300, stale-while-revalidate=600',
+      },
+    }
+  );
+}