fix(pitch-deck): Assumptions slide reads KPIs from fp_* tables + version-aware text

- Base Case KPIs now loaded from fp_guv/fp_liquiditaet/fp_kunden (source of truth)
- Bear/Bull derived from Base with scaling factors
- Assumptions text conditional: Wandeldarlehen shows lean plan (3→10, 8%/15% growth),
  1 Mio shows original (5→35, aggressive growth)
- Removed dependency on useFinancialModel (simplified model)

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

pitch-deck/components/PitchDeck.tsx

@@ -198,7 +198,7 @@ export default function PitchDeck({ lang, onToggleLanguage, investor, onLogout,
       case 'ai-qa':
         return <AIQASlide lang={lang} />
       case 'annex-assumptions':
-        return <AssumptionsSlide lang={lang} investorId={investor?.id || null} preferredScenarioId={preferredScenarioId} />
+        return <AssumptionsSlide lang={lang} investorId={investor?.id || null} preferredScenarioId={preferredScenarioId} isWandeldarlehen={isWandeldarlehen} />
       case 'annex-architecture':
         return <ArchitectureSlide lang={lang} />
       case 'annex-gtm':