CRITICAL(pitch-deck): Liquidität tab — use DB values for all sum/balance rows

Frontend was recalculating Summe EINZAHLUNGEN including funding (1M),
which made liquidity appear as ~1M throughout. Now all Liquidität
sum/balance rows (Summe, ÜBERSCHUSS, Kontostand, LIQUIDITÄT) come
directly from the engine-computed DB values.

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

pitch-deck/components/slides/FinanzplanSlide.tsx

@@ -834,16 +834,11 @@ export default function FinanzplanSlide({ lang, investorId, preferredScenarioId,
                     })
                   }
 
-                  // === Liquidität: row_type-based sums ===
-                  else if (label.includes('Summe') && label.includes('ERTR')) {
-                    sourceRows = rows.filter(r => (r as Record<string, unknown>).row_type === 'einzahlung' && !getLabel(r).includes('Summe'))
-                  } else if (label.includes('Summe') && label.includes('AUSZAHL')) {
-                    sourceRows = rows.filter(r => (r as Record<string, unknown>).row_type === 'auszahlung' && !getLabel(r).includes('Summe'))
-                  }
-
-                  // === Liquidität: ÜBERSCHUSS = Erträge - Auszahlungen ===
-                  else if (label.includes('ÜBERSCHUSS') || label.includes('UEBERSCHUSS')) {
-                    // These are complex formulas — keep DB values for now
+                  // === Liquidität: ALL sum/balance rows — keep DB values (engine computed) ===
+                  else if (activeSheet === 'liquiditaet' && (
+                    label.includes('Summe') || label.includes('ÜBERSCHUSS') || label.includes('UEBERSCHUSS') ||
+                    label.includes('LIQUIDITÄT') || label.includes('LIQUIDITAET') || label.includes('Kontostand')
+                  )) {
                     return row
                   }