feat(pitch-deck): Pricing slide, GuV hierarchy, Problem/Solution cards, engine fixes

- BusinessModel → Pricing: remove Unit Economics, fullwidth tiers
- GuV: major sums (EBIT, Rohergebnis, Jahresüberschuss) larger font + border
- Engine: compute Rohergebnis, dynamic financing row matching
- Problem slide: amber/orange "Die Konsequenz" card
- Solution slide: larger Compliance Optimizer card
- DB patch: Stammkapital, 2. Finanzierungsrunde 500k, GuV sort order

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

pitch-deck/lib/i18n.ts

@@ -18,7 +18,7 @@ const translations = {
       'Modularer Baukasten',
       'So funktioniert\'s',
       'Markt',
-      'Geschäftsmodell',
+      'Pricing',
       'Meilensteine',
       'Wettbewerb',
       'Team',
@@ -188,8 +188,8 @@ const translations = {
       growth: 'Wachstum p.a.',
     },
     businessModel: {
-      title: 'Geschäftsmodell',
-      subtitle: 'Modulares SaaS mit Savings-Argument',
+      title: 'Pricing',
+      subtitle: 'Mitarbeiterbasiertes SaaS — Kunden sparen mehr als sie zahlen',
       unitEconomics: 'Unit Economics',
       amortization: 'Amortisation',
       margin: 'Marge',
@@ -314,7 +314,7 @@ const translations = {
       'Modular Toolkit',
       'How It Works',
       'Market',
-      'Business Model',
+      'Pricing',
       'Milestones',
       'Competition',
       'Team',
@@ -484,8 +484,8 @@ const translations = {
       growth: 'Growth p.a.',
     },
     businessModel: {
-      title: 'Business Model',
-      subtitle: 'Modular SaaS with Savings Argument',
+      title: 'Pricing',
+      subtitle: 'Employee-based SaaS — customers save more than they pay',
       unitEconomics: 'Unit Economics',
       amortization: 'Amortization',
       margin: 'Margin',