Enhance webpack configuration for improved performance and development experience. Add filesystem caching and watch options. Update KreditorSelector to handle prefilled data and improve state management. Refactor TransactionsTable to manage focus during dialog interactions. Update admin tables to manage focus restoration and improve dialog handling. Implement IBAN filtering in IbanSelectionFilter and enhance document rendering with Kreditor information. Update SQL schema to allow multiple IBANs for the same Kreditor and adjust API routes for better data handling.

src/database/schema.sql

@@ -8,6 +8,7 @@ GO
 
 
 -- Create Kreditor table
+-- Multiple IBANs can have the same kreditor name and kreditorId
 CREATE TABLE fibdash.Kreditor (
     id INT IDENTITY(1,1) PRIMARY KEY,
     iban NVARCHAR(34) NOT NULL,
@@ -15,9 +16,10 @@ CREATE TABLE fibdash.Kreditor (
     kreditorId NVARCHAR(50) NOT NULL
 );
 
--- Ensure kreditorId is unique to support FK references
+-- Create unique index on IBAN to prevent duplicate IBANs
+-- but allow same kreditorId and name for multiple IBANs
 ALTER TABLE fibdash.Kreditor
-ADD CONSTRAINT UQ_Kreditor_kreditorId UNIQUE (kreditorId);
+ADD CONSTRAINT UQ_Kreditor_IBAN UNIQUE (iban);
 
 -- Create AccountingItems table
 -- Based on CSV structure: umsatz brutto, soll/haben kz, konto, gegenkonto, bu, buchungsdatum, rechnungsnummer, buchungstext, beleglink