diff --git a/src/ClaudeDo.Localization/locales/de.json b/src/ClaudeDo.Localization/locales/de.json
index 3b7bc8f..b42dcf2 100644
--- a/src/ClaudeDo.Localization/locales/de.json
+++ b/src/ClaudeDo.Localization/locales/de.json
@@ -68,6 +68,8 @@
     "enterKey": "ENTER",
     "notesPinnedRow": "Notizen (Tagesnotizen)",
     "prepareDay": "Tag vorbereiten",
+    "prepLog": "Vorbereitungs-Log",
+    "clearDay": "Tag leeren",
     "overdue": "ÜBERFÄLLIG",
     "tasks": "AUFGABEN",
     "clearCompletedTip": "Alle abgeschlossenen löschen",
diff --git a/src/ClaudeDo.Localization/locales/en.json b/src/ClaudeDo.Localization/locales/en.json
index 2d0f3aa..8c9d78d 100644
--- a/src/ClaudeDo.Localization/locales/en.json
+++ b/src/ClaudeDo.Localization/locales/en.json
@@ -68,6 +68,8 @@
     "enterKey": "ENTER",
     "notesPinnedRow": "Notes (daily notes)",
     "prepareDay": "Prepare day",
+    "prepLog": "Prep log",
+    "clearDay": "Clear day",
     "overdue": "OVERDUE",
     "tasks": "TASKS",
     "clearCompletedTip": "Clear all completed",
diff --git a/src/ClaudeDo.Ui/ViewModels/Islands/TasksIslandViewModel.cs b/src/ClaudeDo.Ui/ViewModels/Islands/TasksIslandViewModel.cs
index fa65b95..e45b8b1 100644
--- a/src/ClaudeDo.Ui/ViewModels/Islands/TasksIslandViewModel.cs
+++ b/src/ClaudeDo.Ui/ViewModels/Islands/TasksIslandViewModel.cs
@@ -27,6 +27,7 @@ public sealed partial class TasksIslandViewModel : ViewModelBase
     public event EventHandler? FocusAddTaskRequested;
     public event EventHandler? TasksChanged;
     public event Action? NotesRequested;
+    public event Action? PrepRequested;
     public void RequestFocusAddTask() => FocusAddTaskRequested?.Invoke(this, EventArgs.Empty);
 
     [RelayCommand]
@@ -40,10 +41,22 @@ public sealed partial class TasksIslandViewModel : ViewModelBase
     private async Task PrepareDayAsync()
     {
         if (_worker is null) return;
+        PrepRequested?.Invoke();
         try { await _worker.RunDailyPrepNowAsync(); }
         catch { /* worker offline; broadcast will reconcile on return */ }
     }
 
+    [RelayCommand]
+    private void ShowPrepLog() => PrepRequested?.Invoke();
+
+    [RelayCommand]
+    private async Task ClearDayAsync()
+    {
+        if (_worker is null) return;
+        try { await _worker.ClearMyDayAsync(); }
+        catch { /* worker offline; broadcast will reconcile on return */ }
+    }
+
     public ObservableCollection<TaskRowViewModel> Items { get; } = new();
     public ObservableCollection<TaskRowViewModel> OverdueItems { get; } = new();
     public ObservableCollection<TaskRowViewModel> OpenItems { get; } = new();
diff --git a/src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs b/src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs
index 28a6411..9c46ccb 100644
--- a/src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs
+++ b/src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs
@@ -199,6 +199,7 @@ public sealed partial class IslandsShellViewModel : ViewModelBase
         Lists.SelectionChanged += (_, _) => Tasks.LoadForList(Lists.SelectedList);
         Tasks.SelectionChanged += (_, _) => Details.Bind(Tasks.SelectedTask);
         Tasks.NotesRequested += () => Details.ShowNotes();
+        Tasks.PrepRequested += () => Details.ShowPrep();
         Tasks.TasksChanged     += (_, _) => _ = Lists.RefreshCountsAsync();
         Tasks.OpenListSettingsRequested += (_, _) =>
         {
diff --git a/src/ClaudeDo.Ui/Views/Islands/TasksIslandView.axaml b/src/ClaudeDo.Ui/Views/Islands/TasksIslandView.axaml
index 020d4fe..83bcc81 100644
--- a/src/ClaudeDo.Ui/Views/Islands/TasksIslandView.axaml
+++ b/src/ClaudeDo.Ui/Views/Islands/TasksIslandView.axaml
@@ -82,6 +82,22 @@
             Command="{Binding PrepareDayCommand}"
             Content="{loc:Tr tasks.prepareDay}"/>
 
+    <!-- Prep Log button (My Day only) -->
+    <Button DockPanel.Dock="Top"
+            Classes="btn" HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
+            Margin="16,0,16,8"
+            IsVisible="{Binding IsMyDayList}"
+            Command="{Binding ShowPrepLogCommand}"
+            Content="{loc:Tr tasks.prepLog}"/>
+
+    <!-- Clear Day button (My Day only) -->
+    <Button DockPanel.Dock="Top"
+            Classes="btn" HorizontalAlignment="Stretch" HorizontalContentAlignment="Left"
+            Margin="16,0,16,8"
+            IsVisible="{Binding IsMyDayList}"
+            Command="{Binding ClearDayCommand}"
+            Content="{loc:Tr tasks.clearDay}"/>
+
     <!-- Task list -->
     <ScrollViewer>
       <StackPanel Margin="10,4">
diff --git a/tests/ClaudeDo.Ui.Tests/ViewModels/TasksIslandDailyPrepTests.cs b/tests/ClaudeDo.Ui.Tests/ViewModels/TasksIslandDailyPrepTests.cs
new file mode 100644
index 0000000..f212be6
--- /dev/null
+++ b/tests/ClaudeDo.Ui.Tests/ViewModels/TasksIslandDailyPrepTests.cs
@@ -0,0 +1,67 @@
+using ClaudeDo.Data;
+using ClaudeDo.Ui.ViewModels.Islands;
+using Microsoft.EntityFrameworkCore;
+
+namespace ClaudeDo.Ui.Tests.ViewModels;
+
+public class TasksIslandDailyPrepTests : IDisposable
+{
+    private readonly string _dbPath;
+
+    public TasksIslandDailyPrepTests()
+    {
+        _dbPath = Path.Combine(Path.GetTempPath(), $"claudedo_tasks_prep_{Guid.NewGuid():N}.db");
+        using var ctx = NewContext();
+        ctx.Database.EnsureCreated();
+    }
+
+    public void Dispose()
+    {
+        try { File.Delete(_dbPath); } catch { }
+        try { File.Delete(_dbPath + "-wal"); } catch { }
+        try { File.Delete(_dbPath + "-shm"); } catch { }
+    }
+
+    private ClaudeDoDbContext NewContext()
+    {
+        var opts = new DbContextOptionsBuilder<ClaudeDoDbContext>()
+            .UseSqlite($"Data Source={_dbPath}")
+            .Options;
+        return new ClaudeDoDbContext(opts);
+    }
+
+    private sealed class TestDbFactory : IDbContextFactory<ClaudeDoDbContext>
+    {
+        private readonly Func<ClaudeDoDbContext> _create;
+        public TestDbFactory(Func<ClaudeDoDbContext> create) => _create = create;
+        public ClaudeDoDbContext CreateDbContext() => _create();
+    }
+
+    private sealed class DefaultStub : StubWorkerClient { }
+
+    private TasksIslandViewModel NewTasksVm(StubWorkerClient stub) =>
+        new(new TestDbFactory(NewContext), worker: stub);
+
+    [Fact]
+    public async Task ClearDayCommand_calls_worker()
+    {
+        var stub = new DefaultStub();
+        var vm = NewTasksVm(stub);
+
+        await vm.ClearDayCommand.ExecuteAsync(null);
+
+        Assert.Equal(1, stub.ClearMyDayCalls);
+    }
+
+    [Fact]
+    public async Task PrepareDayCommand_raises_PrepRequested()
+    {
+        var vm = NewTasksVm(new DefaultStub());
+        var raised = false;
+        vm.PrepRequested += () => raised = true;
+
+        await vm.PrepareDayCommand.ExecuteAsync(null);
+
+        Assert.True(raised);
+    }
+}