Add Week 3 polish and late-game features

VC funding system (seed through IPO with requirements gating), 15
achievements with engine checker, model tuning presets and unlockable
sliders, overload policy controls, open-source mechanic with reputation
boost, enhanced Recharts analytics (subscriber/reputation/revenue vs
expenses charts), M&A acquisition system, sidebar NEW badges on era
transitions, tutorial hints, and wired-up settings toggles.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/components/layout/MainLayout.tsx

@@ -13,6 +13,7 @@ import { FinancePage } from '@/pages/FinancePage';
 import { TalentPage } from '@/pages/TalentPage';
 import { DataPage } from '@/pages/DataPage';
 import { CompetitorsPage } from '@/pages/CompetitorsPage';
+import { AchievementsPage } from '@/pages/AchievementsPage';
 
 export function MainLayout() {
   const activePage = useGameStore((s) => s.activePage);
@@ -43,6 +44,7 @@ function PageRouter({ page }: { page: string }) {
     case 'talent': return <TalentPage />;
     case 'data': return <DataPage />;
     case 'competitors': return <CompetitorsPage />;
+    case 'achievements': return <AchievementsPage />;
     case 'settings': return <SettingsPage />;
     default: return <PlaceholderPage name={page} />;
   }