Session E (night2): Phase 4 — scan + parlay polish

4.1 ROOT CAUSE of 'Ohtani returns nothing': no backend
    /api/players/search existed (MLB 404'd; NBA/WNBA hit the offline
    Python service). New Express route + mlbStatsAdapter.matchPlayers —
    canonical nameKey fuzzy match (exact > last-name prefix > folded
    substring). LIVE-VERIFIED vs the real 1,299-player list: Ohtani /
    Aaron Judge / Sánchez / sanchez / Chisholm Jr all resolve; accented
    and unaccented return identical results. Non-MLB matches the
    platform's cached names (rosterlogs + grades), cache-only.
4.2 Reveal choreography per §7: analyzing steps → DECLASSIFIED stamp →
    90ms-staggered context panels (entrance floors visible per the
    Phase-0 rule); prefers-reduced-motion skips straight to the card.
4.3 PRIOR READS chips on scan results — the model's public ledger
    history for the player (deferred-render, outcomes + pending, never
    invented). /api/ledger/model gains ?player= on entries.
4.4 Parlay Lab: humanized stat labels via the ONE shared formatter
    (lib/gradeAdapter.statLabel); 1-leg provisional grade ('Leg grade:
    B — add a leg for the combined read'); discoverable entry — Nav
    'Parlay Lab' item opens the drawer via window.__openParlay, and the
    open drawer now renders an honest empty state at 0 legs.

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

web/src/components/Nav.tsx

@@ -24,6 +24,8 @@ const PRIMARY = [
 ];
 const MORE = [
   { label: 'Explore', href: '/explore' },
+  // Session 60 (4.4) — discoverable Parlay Lab entry (opens the drawer).
+  { label: 'Parlay Lab', href: '#parlay', action: 'parlay' as const },
   { label: 'Compare', href: '/compare' },
   { label: 'Tracker', href: '/tracker' },
   { label: 'The Report', href: '/blog' },
@@ -153,7 +155,15 @@ export default function Nav() {
                         key={l.href}
                         href={l.href}
                         role="menuitem"
-                        onClick={() => setMoreOpen(false)}
+                        onClick={(e) => {
+                          if ('action' in l && l.action === 'parlay') {
+                            e.preventDefault();
+                            if (typeof window !== 'undefined' && (window as Window & { __openParlay?: () => void }).__openParlay) {
+                              (window as Window & { __openParlay?: () => void }).__openParlay!();
+                            }
+                          }
+                          setMoreOpen(false);
+                        }}
                         style={{
                           display: 'block',
                           padding: '9px 10px',