feat(pitch-deck): rename Traction → Meilensteine, update milestones data

- i18n: Traction & Meilensteine → Meilensteine / Milestones
- slideNames updated (DE + EN)
- Chat display name updated
- Milestones data replaced via MCP (both versions):
  13 milestones chronologically: domains, DPMA, IHK, prototype,
  pilot customers, RAG pipeline, EUIPO, L-Bank, Gründerzuschuss,
  GmbH founding, onboarding, App Store, distribution
- Metrics updated: 385 docs, 25k controls, 12 modules, etc.

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

pitch-deck/lib/i18n.ts

@@ -19,7 +19,7 @@ const translations = {
       'So funktioniert\'s',
       'Markt',
       'Geschäftsmodell',
-      'Traction',
+      'Meilensteine',
       'Wettbewerb',
       'Team',
       'Finanzen',
@@ -205,8 +205,8 @@ const translations = {
       savingsTotal: 'Ersparnis',
     },
     traction: {
-      title: 'Traction & Meilensteine',
-      subtitle: 'Unser bisheriger Fortschritt',
+      title: 'Meilensteine',
+      subtitle: 'Was wir bereits erreicht haben — und was als Nächstes kommt',
       completed: 'Abgeschlossen',
       inProgress: 'In Arbeit',
       planned: 'Geplant',
@@ -315,7 +315,7 @@ const translations = {
       'How It Works',
       'Market',
       'Business Model',
-      'Traction',
+      'Milestones',
       'Competition',
       'Team',
       'Financials',
@@ -501,8 +501,8 @@ const translations = {
       savingsTotal: 'Total Savings',
     },
     traction: {
-      title: 'Traction & Milestones',
-      subtitle: 'Our progress so far',
+      title: 'Milestones',
+      subtitle: 'What we have achieved — and what comes next',
       completed: 'Completed',
       inProgress: 'In Progress',
       planned: 'Planned',