fix(pitch-deck): KPICard NaN for string values, remove cap-table + Land&Expand

- KPICard: accept string values (e.g. "380+") without NaN
- Remove cap-table slide from order + sidebar
- Remove Land & Expand arrow from Pricing slide

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

pitch-deck/lib/i18n.ts

@@ -23,7 +23,6 @@ const translations = {
       'Wettbewerb',
       'Team',
       'The Ask',
-      'Investition & Cap Table',
       'Kundenersparnis',
       'KI Q&A',
       'Anhang: Strategie',
@@ -319,7 +318,6 @@ const translations = {
       'Competition',
       'Team',
       'The Ask',
-      'Investment & Cap Table',
       'Customer Savings',
       'AI Q&A',
       'Appendix: Strategy',