feat(usability): explain deleted bookings and linked transfer undo (U10)

tests/Duempelkas.Tests/EntryLifecycleUiTests.cs

@@ -0,0 +1,32 @@
+using Bunit;
+using Duempelkas.App.Components;
+using Duempelkas.App.Services;
+using Xunit;
+
+namespace Duempelkas.Tests;
+
+public class EntryLifecycleUiTests
+{
+    [Fact]
+    public async Task DeleteTransfer_ExplainsBothAccounts_HidesRows_AndUndoRestoresBoth()
+    {
+        using var f = new LedgerUiFixture();
+        var entries = f.Service<IEntryService>();
+        await entries.CreateTransferAsync(1, 2, DateTime.Today, "Testtransfer", 20m);
+        var page = f.Context.Render<Routes>();
+        page.WaitForElement(".account-card").Click();
+        page.WaitForElement(".entry-action-menu");
+        page.Find("button.btn-outline-danger").Click();
+        page.WaitForAssertion(() => Assert.Contains("beiden Konten", page.Markup));
+        Assert.Contains("Barkasse", page.Find("dialog").TextContent);
+        Assert.Contains("Girokonto", page.Find("dialog").TextContent);
+        page.Find("dialog button.btn-danger").Click();
+        page.WaitForAssertion(() => Assert.Empty(page.FindAll("tbody tr")));
+        Assert.All(await entries.GetEntriesAsync(2, (int?)null), e => Assert.True(e.IsDeleted));
+        page.Find(".history-toggle input").Change(true);
+        Assert.Contains("zählt nicht zum Kontostand", page.Markup);
+        page.Find(".toast-success .btn").Click();
+        page.WaitForAssertion(() => Assert.Single(page.FindAll("tbody tr")));
+        Assert.All(await entries.GetEntriesAsync(2, (int?)null), e => Assert.False(e.IsDeleted));
+    }
+}