Codebasis als Dateien ins Arbeitsrepo statt als Gitlink

QuellCode/CentronERP war nur als Gitlink (Submodul-Referenz auf 79c1142)
getrackt, ohne .gitmodules und ohne erreichbares Remote. Der
Untersuchungsgegenstand der Versuchsreihe war damit nicht reproduzierbar
gesichert: Ein Klon haette ein leeres Verzeichnis erhalten, und die Belege
der 3.287 Anforderungen waeren nicht ueberpruefbar gewesen.

Umstellung:
- Historie nach c:\DEV\CentronERP_git_snapshot_79c1142 ausgelagert
  (vollstaendig lesbar, enthaelt 79c1142 und Vorgaenger 89ccfd6)
- Gitlink aus dem Index entfernt
- Dateiinhalt aufgenommen: 24.557 Dateien, rund 333 MB

Die verschachtelte .gitignore der Codebasis gilt weiter, Build-Artefakte
bleiben ausgeschlossen. Details in Versuche/Versuch_01/_Codebasis-Nachweis.md

QuellCode/CentronERP/tests/Centron.Tests.EndToEnd/TicketTests/Ticket127331/Ticket127331Tests.cs

@@ -0,0 +1,76 @@
+using Centron.BusinessLogic;
+using Centron.BusinessLogic.Sales.Support;
+using Centron.BusinessLogic.WebServices.Sales.Support;
+using Centron.Interfaces;
+using Centron.Interfaces.BL;
+using Centron.Tests.EndToEnd.Infrastructure;
+using Xunit.Abstractions;
+
+namespace Centron.Tests.EndToEnd.TicketTests.Ticket127331;
+
+public class Ticket127331Tests : EndToEndTest
+{
+    public Ticket127331Tests(ITestOutputHelper testOutputHelper) 
+        : base(testOutputHelper)
+    {
+        this.Verifier.Settings.IgnoreColumn("Richtext");
+    }
+
+    // There is a customer 10020 with a contract 22 and special prices in that contract for article 5
+    // So take a timer from that customer (timer 180), and book this article for it
+    private const int ContractI3D = 22;
+    private const int ArticleI3D = 5;
+    private const int TimerI3D = 180;
+    
+    public override void Execute()
+    {
+        // The problem in this ticket is that when booking additional articles for a timer (HelpdeskTimerArticleBookingBL)
+        // then special prices from the contract of the timer would not be applied
+        this.PrepareDatabase();
+        
+        using (var session = new BLSession())
+        {
+            var bookResult = session.GetBL<HelpdeskTimerArticleBookingWebServiceBL>().BookArticles(
+                CentronObjectKindNumeric.DeliveryListClass,
+                TimerI3D,
+                ArticleI3D,
+                isExternalArticle:false,
+                quantity:4,
+                barcodes:null,
+                warehouseI3D:-1,
+                customizedArticleText:null,
+                this.GetLoggedInUser().User);
+            
+            bookResult.ThrowIfError();
+        }
+
+        using (var session = new BLSession())
+        {
+            var result = session.GetBL<HelpdeskTimerArticleBookingWebServiceBL>().GetBookedArticles(new HelpdeskTimerBookedArticlesFilter
+            {
+                HelpdeskTimerI3Ds = new []
+                {
+                    TimerI3D
+                }
+            });
+            
+            this.Verifier.Verify("BookedArticlesResult", result);
+
+            var itemI3D = result.Data[0].ReceiptItemI3D;
+            this.Verifier.VerifySql("BookedArticle_LiefPos", $"SELECT LP.* FROM dbo.LiefPos LP WHERE LP.I3D = {itemI3D}");
+        }
+    }
+
+    private void PrepareDatabase()
+    {
+        // The article is currently a service-article, which is ignored in the GetBookedArticles logic
+        // So move that article into the "Hardware" material group
+        this.Sql($"UPDATE dbo.ARTIK SET Warengruppe = 5 WHERE I3D = {ArticleI3D}");
+        
+        // Also change the article price to something more visible
+        this.Sql($"UPDATE dbo.ARTIK SET VK_1 = 5000, VK_2 = 6000, VK_3 = 7000, VK_4 = 8000 WHERE I3D = {ArticleI3D}");
+        
+        // And make sure the timer has the contract referenced
+        this.Sql($"UPDATE dbo.hlpdsk_timer SET ContractI3D = {ContractI3D} WHERE I3D = {TimerI3D}");
+    }
+}