feat(pitch-deck): add passwordless investor auth, audit logs, snapshots & PWA

Implement a complete investor access system for the pitch deck:

- Passwordless magic link auth (jose JWT + nodemailer SMTP)
- Per-investor audit logging (slide views, assumption changes, chat)
- Financial model snapshot persistence (auto-save/restore per investor)
- PWA support (manifest, service worker, offline caching, icons)
- Security safeguards (watermark overlay, rate limiting, anti-scraping
  headers, content protection, single-session enforcement)
- Admin API for invite/revoke/audit-log management
- Integrated into docker-compose.coolify.yml for production deployment

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pitch-deck/app/page.tsx

@@ -2,14 +2,24 @@
 
 import { useState, useCallback } from 'react'
 import { Language } from '@/lib/types'
+import { useAuth } from '@/lib/hooks/useAuth'
 import PitchDeck from '@/components/PitchDeck'
 
 export default function Home() {
   const [lang, setLang] = useState<Language>('de')
+  const { investor, loading, logout } = useAuth()
 
   const toggleLanguage = useCallback(() => {
     setLang(prev => prev === 'de' ? 'en' : 'de')
   }, [])
 
-  return <PitchDeck lang={lang} onToggleLanguage={toggleLanguage} />
+  if (loading) {
+    return (
+      <div className="h-screen flex items-center justify-center">
+        <div className="w-12 h-12 border-2 border-indigo-500 border-t-transparent rounded-full animate-spin" />
+      </div>
+    )
+  }
+
+  return <PitchDeck lang={lang} onToggleLanguage={toggleLanguage} investor={investor} onLogout={logout} />
 }