Fix: Stornierte/Entwurfs-Rechnungen aus Quartalsbericht und Cashflow-Summen ausgeschlossen

backend/routes/invoices.py

@@ -414,7 +414,7 @@ def get_quarterly(year: int, q: int, admin=Depends(require_admin)):
 
     with db() as conn:
         rows = conn.execute(
-            "SELECT * FROM invoices WHERE created_at >= ? AND created_at <= ? ORDER BY id",
+            "SELECT * FROM invoices WHERE status IN ('paid','sent') AND created_at >= ? AND created_at <= ? ORDER BY id",
             (from_date, to_date + "T23:59:59Z")
         ).fetchall()