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/PlaywrightTests/Utilities/Auth.cs

@@ -0,0 +1,47 @@
+using Microsoft.Playwright;
+
+namespace PlaywrightTests.Utilities;
+
+public static class Auth
+{
+    private static LocatorAssertionsToContainTextOptions TenSTextTimeout => new() { Timeout = 10_000 };
+    private static LocatorAssertionsToBeVisibleOptions TenSLocatorAssertTimeout => new() { Timeout = 10_000 };
+    public static async Task Login(IPage page, AvailableEmployeeForTests user = AvailableEmployeeForTests.Admin)
+    {
+        await page.GotoAsync("http://localhost:8050/auth");
+        var (username, password) = GetCredentials(user);
+        await page.GetByPlaceholder("Benutzername").ClickAsync();
+        await page.GetByPlaceholder("Benutzername").FillAsync(username);
+        await page.GetByPlaceholder("Passwort").ClickAsync();
+        await page.GetByPlaceholder("Passwort").FillAsync(password);
+        await page.GetByRole(AriaRole.Button, new() { Name = "Anmelden" }).ClickAsync();
+        await Assertions.Expect(page.GetByRole(AriaRole.Heading)).ToContainTextAsync("Hallo, c-entron Administrator!", TenSTextTimeout);
+    }
+    public static async Task LoginWebAccount(IPage page, AvailableWebAccountForTests user = AvailableWebAccountForTests.Playwright)
+    {
+        await page.GotoAsync("http://localhost:8050/auth");
+        var (username, password) = GetCredentials(user);
+        await page.GetByPlaceholder("Benutzername").ClickAsync();
+        await page.GetByPlaceholder("Benutzername").FillAsync(username);
+        await page.GetByPlaceholder("Passwort").ClickAsync();
+        await page.GetByPlaceholder("Passwort").FillAsync(password);
+        await page.GetByRole(AriaRole.Button, new() { Name = "Anmelden" }).ClickAsync();
+        await Assertions.Expect(page.Locator("a").Filter(new() { HasText = "Receipts" })).ToBeVisibleAsync(TenSLocatorAssertTimeout);
+        await Assertions.Expect(page.Locator("a").Filter(new() { HasText = "Tickets" })).ToBeVisibleAsync(TenSLocatorAssertTimeout);
+    }
+
+    public static ValueTuple<string, string> GetCredentials(AvailableEmployeeForTests employee) => employee switch
+    {
+        AvailableEmployeeForTests.Admin => new ValueTuple<string, string>("admin", "1"),
+        _ => throw new ArgumentOutOfRangeException(nameof(employee), employee, null)
+    };
+
+    private static ValueTuple<string, string> GetCredentials(AvailableWebAccountForTests webAccount) => webAccount switch
+    {
+        AvailableWebAccountForTests.Playwright => new ValueTuple<string, string>("Playwright", "playwright"),
+        AvailableWebAccountForTests.Alpha => new ValueTuple<string, string>("alphauser", "alphapassword"),
+        AvailableWebAccountForTests.Beta => new ValueTuple<string, string>("betauser", "betapassword"),
+        AvailableWebAccountForTests.Gamma => new ValueTuple<string, string>("gammauser", "gammapassword"),
+        _ => throw new ArgumentOutOfRangeException(nameof(webAccount), webAccount, null)
+    };
+}

QuellCode/CentronERP/tests/PlaywrightTests/Utilities/AvailableEmployees.cs

@@ -0,0 +1,7 @@
+namespace PlaywrightTests.Utilities;
+
+public enum AvailableEmployeeForTests
+{
+    Admin
+}
+

QuellCode/CentronERP/tests/PlaywrightTests/Utilities/AvailableWebAccountForTests.cs

@@ -0,0 +1,18 @@
+namespace PlaywrightTests.Utilities;
+
+public enum AvailableWebAccountForTests
+{
+    Playwright,
+    /// <summary>
+    /// Alpha user is only available in version2 db
+    /// </summary>
+    Alpha,
+    /// <summary>
+    /// Beta user is only available in version2 db
+    /// </summary>
+    Beta,
+    /// <summary>
+    /// Gamma user is only available in version2 db
+    /// </summary>
+    Gamma,
+}