fix: ACV detail shows 0 — map 'acv' key to 'arpu' in fpKPIs

pitch-deck/components/slides/FinanzplanSlide.tsx

@@ -345,7 +345,8 @@ export default function FinanzplanSlide({ lang, investorId, preferredScenarioId,
                   <div className="mt-4 pt-4 border-t border-white/10">
                     <div className="grid grid-cols-5 gap-2 text-center">
                       {[2026,2027,2028,2029,2030].map(y => {
-                        const key = chartDetail === 'cash' ? 'liquiditaet' : chartDetail === 'revcost' ? 'revenue' : chartDetail
+                        const keyMap: Record<string, string> = { cash: 'liquiditaet', revcost: 'revenue', acv: 'arpu' }
+                        const key = keyMap[chartDetail!] || chartDetail
                         const v = fpKPIs[`y${y}`]?.[key as keyof typeof fpKPIs['y2026']] as number || 0
                         return (
                           <div key={y}>