Session G (night2): Phase 6 — landing first-paint + content engine + OG

6.1 FIRST-PAINT ROOT CAUSE: the landing blocked its ENTIRE render on
    Supabase auth init ('loading || user') — anonymous visitors stared at
    'LOADING THE SLATE' for the whole auth roundtrip (~3-4s). Now a
    synchronous localStorage session check gates the suppression: only
    visitors who actually hold a session (and will redirect) wait;
    anonymous traffic paints the hero immediately. Full RSC conversion of
    the hero is deferred and logged — the blocker itself is dead.
    Proof Strip rules: top-3 by grade whatever they are; 'TONIGHT'S TOP
    SIGNALS' only with >=1 A-tier, else 'TONIGHT'S BOARD'; nothing graded
    yet → yesterday's SETTLED reads with outcome chips (misses included).
6.2 Content routes: /api/content/top-signals/:sport,
    /streak-watch/:sport (the zero-grade daily format off the aggregator),
    /daily-report/:sport — built but self-flagging do_not_post until the
    record clears n>=20. Flag, don't fake.
6.3 Per-player OG images: app/player/[name]/opengraph-image.tsx (Node
    runtime per the S53 rule) + server layout generateMetadata — every
    shared player link unfurls as an intelligence card.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

web/src/app/page.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useEffect } from 'react';
+import { useEffect, useState } from 'react';
 import { useRouter } from 'next/navigation';
 import { useAuth } from '@/contexts/AuthContext';
 import Hero from '@/components/Hero';
@@ -25,17 +25,35 @@ import Pricing from '@/components/Pricing';
 import FAQ from '@/components/FAQ';
 // Footer is mounted globally in the root layout (Session 34) — no per-page import.
 
+// Session 60 (6.1) — the 3–4s "LOADING THE SLATE" first paint was THIS
+// page blocking its entire render on Supabase auth initialization
+// (`loading || user`), even for anonymous visitors who were never going to
+// redirect. Synchronous localStorage check instead: only a visitor who
+// actually HAS a stored session (and will redirect to /dashboard) sees the
+// suppressed render; anonymous traffic paints the hero immediately.
+function hasStoredSession(): boolean {
+  if (typeof window === 'undefined') return false;
+  try {
+    for (let i = 0; i < window.localStorage.length; i += 1) {
+      const k = window.localStorage.key(i) || '';
+      if (/^sb-.*-auth-token$/.test(k) || k === 'sb-token') return true;
+    }
+  } catch { /* storage blocked → treat as anonymous */ }
+  return false;
+}
+
 export default function Home() {
   const { user, loading } = useAuth();
   const router = useRouter();
+  const [maybeSignedIn] = useState<boolean>(() => hasStoredSession());
 
   useEffect(() => {
     if (!loading && user) router.replace('/dashboard');
   }, [user, loading, router]);
 
-  // While we know the user is signed in we suppress the marketing
-  // render to avoid a flicker before the redirect lands.
-  if (loading || user) {
+  // Suppress the marketing render ONLY for visitors with a stored session
+  // (they're about to redirect) — anonymous first paint is instant.
+  if (user || (loading && maybeSignedIn)) {
     return (
       <section style={{ minHeight: '80vh', display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
         <p className="mono" style={{ color: 'var(--text-tertiary)', fontSize: 13, letterSpacing: '0.08em', textTransform: 'uppercase' }}>