fix: DB Pool 5→20 + KPI/Charts Skip DB-Load

Pool-Size von 5 auf 20 erhöht (Connection-Exhaustion bei
parallelen Finanzplan-Queries + Compute + API-Calls)

KPIs/Charts Tabs laden keine DB-Daten (virtual tabs,
Daten sind hardcoded) → sofortiges Rendering

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

pitch-deck/components/slides/FinanzplanSlide.tsx

@@ -75,6 +75,11 @@ export default function FinanzplanSlide({ lang }: FinanzplanSlideProps) {
 
   // Load sheet data
   const loadSheet = useCallback(async (name: string) => {
+    if (name === 'kpis' || name === 'charts') {
+      setRows([])
+      setLoading(false)
+      return
+    }
     setLoading(true)
     try {
       const r = await fetch(`/api/finanzplan/${name}`)

pitch-deck/lib/db.ts

@@ -2,9 +2,9 @@ import { Pool } from 'pg'
 
 const pool = new Pool({
   connectionString: process.env.DATABASE_URL || 'postgres://breakpilot:breakpilot123@localhost:5432/breakpilot_db',
-  max: 5,
+  max: 20,
   idleTimeoutMillis: 30000,
-  connectionTimeoutMillis: 5000,
+  connectionTimeoutMillis: 10000,
 })
 
 export default pool