feat: implement set-based invoice payment calculations and enhance email logging configuration

Fuchs_Database/dbo/Functions/fds__fn_unpaidInvoices.sql

@@ -1,7 +1,9 @@
 -- =============================================
--- Author:		<Author,,Name>
--- Create date: <Create Date,,>
--- Description:	<Description,,>
+-- Description:	Finalized, not-paid, not-canceled, not-storno'd invoices with a balance > 0.
+--              [PaymentAmount] / [OpenAmount] come from one set-based pass over the banking
+--              transactions ([fds__fn_InvoicePaymentAmounts]) — use them instead of calling the
+--              scalar [fds__fn_InvoicePaymentAmount](Id) per row, which re-runs the whole
+--              banking TVF for every invoice and timed out the dashboard widgets.
 -- =============================================
 CREATE FUNCTION [dbo].[fds__fn_unpaidInvoices]
 (	
@@ -28,6 +30,10 @@ RETURN
 					and InvoiceBalance > 0
 					AND NOT exists (SELECT 0 FROM [dbo].[fds__invoice_details] as d where d.[StornoTo_InvId] = iv.[id])
 	)
-	SELECT *  /*[Rechnung] = [invoiceId], [Name] = [InvoiceTitle] + CHAR(10) + '  (' + (SELECT TOP(1) c.[name] FROM [dbo].[mfr__companies] as c WHERE inv.[customerid] = c.[id]) + ')', [Betrag (net)] = FORMAT([invoicebalance], '#0.00€', 'de'), [Datum] = FORMAT([DateFinalized], 'dd.MM.yy' , 'de'), [Zahlungen] = FORMAT([dbo].[fds__fn_InvoicePaymentAmount]([id]), '#0.00€', 'de'), [order] = ROW_NUMBER() OVER (ORDER BY [DateFinalized], [DateSent]) */
+	SELECT inv.*
+		  ,[PaymentAmount] = ISNULL(pay.[Amount], 0.0)
+		  ,[OpenAmount]    = CAST(inv.[InvoiceBalance] - ISNULL(pay.[Amount], 0.0) as numeric(10,2))
+		/*[Rechnung] = [invoiceId], [Name] = [InvoiceTitle] + CHAR(10) + '  (' + (SELECT TOP(1) c.[name] FROM [dbo].[mfr__companies] as c WHERE inv.[customerid] = c.[id]) + ')', [Betrag (net)] = FORMAT([invoicebalance], '#0.00€', 'de'), [Datum] = FORMAT([DateFinalized], 'dd.MM.yy' , 'de'), [Zahlungen] = FORMAT([dbo].[fds__fn_InvoicePaymentAmount]([id]), '#0.00€', 'de'), [order] = ROW_NUMBER() OVER (ORDER BY [DateFinalized], [DateSent]) */
 	FROM inv
-)
+		LEFT JOIN [dbo].[fds__fn_InvoicePaymentAmounts]() as pay ON pay.[InvId] = inv.[Id]
+)␍