diff --git a/src/ClaudeDo.Ui/ViewModels/Islands/Detail/WorkConsoleViewModel.cs b/src/ClaudeDo.Ui/ViewModels/Islands/Detail/WorkConsoleViewModel.cs
new file mode 100644
index 0000000..77e3243
--- /dev/null
+++ b/src/ClaudeDo.Ui/ViewModels/Islands/Detail/WorkConsoleViewModel.cs
@@ -0,0 +1,145 @@
+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using ClaudeDo.Ui.ViewModels.Islands;
+
+namespace ClaudeDo.Ui.ViewModels.Islands.Detail;
+
+public sealed class WorkConsoleChildOutcomeRowViewModel
+{
+    public required string Title { get; init; }
+    public bool HasRoadblock { get; init; }
+    public string RoadblockText { get; init; } = "";
+    public required string StatusLabel { get; init; }
+}
+
+public sealed partial class WorkConsoleViewModel : ViewModelBase
+{
+    // ── Tab selection ──────────────────────────────────────────────
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsOutputTab))]
+    [NotifyPropertyChangedFor(nameof(IsActionsTab))]
+    [NotifyPropertyChangedFor(nameof(IsSessionTab))]
+    private string _selectedTab = "output";
+
+    public bool IsOutputTab  => SelectedTab == "output";
+    public bool IsActionsTab => SelectedTab == "actions";
+    public bool IsSessionTab => SelectedTab == "session";
+
+    [RelayCommand]
+    private void SelectTab(string tab) => SelectedTab = tab;
+
+    // ── Info header ────────────────────────────────────────────────
+    [ObservableProperty] private string _model = "";
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(TurnsText))]
+    private int _turns;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(DiffAddText))]
+    private int _diffAdditions;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(DiffDelText))]
+    private int _diffDeletions;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRoadblock))]
+    private bool _isRunning;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRoadblock))]
+    private bool _isDone;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRoadblock))]
+    private bool _isFailed;
+
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRoadblock))]
+    private bool _isCancelled;
+
+    [ObservableProperty] private string _sessionLabel = "";
+
+    public string TurnsText   => $"{Turns} turns";
+    public string DiffAddText => $"+{DiffAdditions}";
+    public string DiffDelText => $"-{DiffDeletions}";
+
+    // ── Roadblock ──────────────────────────────────────────────────
+    public bool ShowRoadblock => IsFailed || IsCancelled;
+
+    [ObservableProperty] private string _roadblockMessage = "";
+    [ObservableProperty] private bool _showContinue;
+    [ObservableProperty] private bool _showResetAndRetry;
+
+    [RelayCommand] private void Continue() { }
+    [RelayCommand] private void ResetAndRetry() { }
+
+    // ── Actions tab ────────────────────────────────────────────────
+    public ObservableCollection<string> MergeTargetBranches { get; } = new();
+
+    [ObservableProperty] private string? _selectedMergeTarget;
+    [ObservableProperty] private bool _canMergeAll;
+    [ObservableProperty] private string _mergeAllDisabledReason = "";
+    [ObservableProperty] private string? _mergeAllError;
+
+    [RelayCommand] private void OpenDiff() { }
+    [RelayCommand] private void OpenWorktree() { }
+    [RelayCommand] private void ReviewCombinedDiff() { }
+    [RelayCommand] private void MergeAll() { }
+
+    // ── Session tab ────────────────────────────────────────────────
+    [ObservableProperty] private bool _isWaitingForReview;
+    [ObservableProperty] private string _reviewFeedback = "";
+
+    public ObservableCollection<WorkConsoleChildOutcomeRowViewModel> ChildOutcomes { get; } = new();
+    public bool HasChildOutcomes => ChildOutcomes.Count > 0;
+
+    [RelayCommand] private void ApproveReview() { }
+    [RelayCommand] private void RejectReview() { }
+    [RelayCommand] private void ParkReview() { }
+    [RelayCommand] private void CancelReview() { }
+
+    public ObservableCollection<LogLineViewModel> Log { get; } = new();
+
+    public WorkConsoleViewModel()
+    {
+        ChildOutcomes.CollectionChanged += (_, _) => OnPropertyChanged(nameof(HasChildOutcomes));
+
+        // ── Design-time sample data ────────────────────────────────
+        _model          = "sonnet";
+        _turns          = 40;
+        _diffAdditions  = 84;
+        _diffDeletions  = 31;
+        _isRunning      = true;
+        _sessionLabel   = "feat/work-console";
+
+        MergeTargetBranches.Add("main");
+        MergeTargetBranches.Add("develop");
+        _selectedMergeTarget = "main";
+        _canMergeAll = true;
+
+        Log.Add(new LogLineViewModel { Kind = LogKind.Sys,    Text = "Starting claude session…" });
+        Log.Add(new LogLineViewModel { Kind = LogKind.Claude, Text = "Reading DetailsIslandView.axaml to understand existing layout." });
+        Log.Add(new LogLineViewModel { Kind = LogKind.Tool,   Text = "Read(src/ClaudeDo.Ui/Views/Islands/DetailsIslandView.axaml)" });
+        Log.Add(new LogLineViewModel { Kind = LogKind.Claude, Text = "Building WorkConsole component with three tabs." });
+        Log.Add(new LogLineViewModel { Kind = LogKind.Stdout, Text = "dotnet build succeeded — 0 error(s)" });
+
+        ChildOutcomes.Add(new WorkConsoleChildOutcomeRowViewModel
+        {
+            Title       = "Add WorkConsole XAML",
+            StatusLabel = "Done"
+        });
+        ChildOutcomes.Add(new WorkConsoleChildOutcomeRowViewModel
+        {
+            Title         = "Wire ViewModel bindings",
+            HasRoadblock  = true,
+            RoadblockText = "Missing token",
+            StatusLabel   = "Failed"
+        });
+
+        // To preview roadblock state: _isFailed = true; _roadblockMessage = "Session ended unexpectedly"; _showResetAndRetry = true; _isRunning = false;
+        // To preview review state:    _isWaitingForReview = true; _isDone = false; _isRunning = false;
+    }
+}
diff --git a/src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml b/src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml
new file mode 100644
index 0000000..3399b01
--- /dev/null
+++ b/src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml
@@ -0,0 +1,249 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:vm="using:ClaudeDo.Ui.ViewModels.Islands.Detail"
+             xmlns:islands="using:ClaudeDo.Ui.Views.Islands"
+             xmlns:loc="using:ClaudeDo.Ui.Localization"
+             x:DataType="vm:WorkConsoleViewModel"
+             x:Class="ClaudeDo.Ui.Views.Islands.Detail.WorkConsole">
+
+  <Design.DataContext>
+    <vm:WorkConsoleViewModel />
+  </Design.DataContext>
+
+  <UserControl.Styles>
+    <Style Selector="Button.tab-btn">
+      <Setter Property="Background"      Value="Transparent" />
+      <Setter Property="BorderThickness" Value="0" />
+      <Setter Property="Padding"         Value="12,8" />
+      <Setter Property="FontFamily"      Value="{StaticResource MonoFont}" />
+      <Setter Property="FontSize"        Value="{StaticResource FontSizeMono}" />
+      <Setter Property="Foreground"      Value="{StaticResource TextMuteBrush}" />
+      <Setter Property="CornerRadius"    Value="0" />
+    </Style>
+    <Style Selector="Button.tab-btn:pointerover /template/ ContentPresenter">
+      <Setter Property="Background"             Value="{StaticResource Surface2Brush}" />
+      <Setter Property="TextElement.Foreground" Value="{StaticResource TextDimBrush}" />
+    </Style>
+    <Style Selector="Button.tab-btn.active /template/ ContentPresenter">
+      <Setter Property="Background"             Value="{StaticResource Surface3Brush}" />
+      <Setter Property="TextElement.Foreground" Value="{StaticResource AccentBrush}" />
+    </Style>
+  </UserControl.Styles>
+
+  <!-- Outer terminal card — Padding="0" so header/strip span edge-to-edge -->
+  <Border Classes="terminal" Padding="0">
+    <DockPanel LastChildFill="True">
+
+      <!-- ── Title bar ── -->
+      <Grid DockPanel.Dock="Top" ColumnDefinitions="Auto,*,Auto"
+            Background="{DynamicResource Surface2Brush}" Height="28">
+
+        <!-- Traffic-light dots -->
+        <StackPanel Grid.Column="0" Orientation="Horizontal" Spacing="6"
+                    Margin="12,0" VerticalAlignment="Center">
+          <Ellipse Classes="dot-red" />
+          <Ellipse Classes="dot-yellow" />
+          <Ellipse Classes="dot-green" />
+        </StackPanel>
+
+        <!-- Info header: model · turns · +add -del -->
+        <StackPanel Grid.Column="1" Orientation="Horizontal" Spacing="6"
+                    HorizontalAlignment="Center" VerticalAlignment="Center">
+          <TextBlock Classes="meta" Text="{Binding Model}"
+                     Foreground="{DynamicResource TextMuteBrush}" />
+          <TextBlock Classes="meta" Text="·"
+                     Foreground="{DynamicResource TextFaintBrush}" />
+          <TextBlock Classes="meta" Text="{Binding TurnsText}"
+                     Foreground="{DynamicResource TextMuteBrush}" />
+          <TextBlock Classes="meta" Text="·"
+                     Foreground="{DynamicResource TextFaintBrush}" />
+          <TextBlock Classes="diff-add" Text="{Binding DiffAddText}" />
+          <TextBlock Classes="diff-del" Text="{Binding DiffDelText}" />
+        </StackPanel>
+
+        <!-- Status chips (LIVE / DONE / FAILED) -->
+        <Panel Grid.Column="2" Margin="0,0,8,0" VerticalAlignment="Center">
+          <Border Classes="live-chip pulsing"
+                  IsVisible="{Binding IsRunning}">
+            <StackPanel Orientation="Horizontal" Spacing="5" VerticalAlignment="Center">
+              <Ellipse VerticalAlignment="Center" />
+              <TextBlock Text="{loc:Tr session.chipLive}" VerticalAlignment="Center" />
+            </StackPanel>
+          </Border>
+          <Border Classes="live-chip done"
+                  IsVisible="{Binding IsDone}">
+            <StackPanel Orientation="Horizontal" Spacing="5" VerticalAlignment="Center">
+              <Ellipse VerticalAlignment="Center" Fill="{DynamicResource MossBrush}" />
+              <TextBlock Text="{loc:Tr session.chipDone}" VerticalAlignment="Center"
+                         Foreground="{DynamicResource MossBrush}" />
+            </StackPanel>
+          </Border>
+          <Border Classes="live-chip failed"
+                  IsVisible="{Binding IsFailed}">
+            <StackPanel Orientation="Horizontal" Spacing="5" VerticalAlignment="Center">
+              <Ellipse VerticalAlignment="Center" Fill="{DynamicResource BloodBrush}" />
+              <TextBlock Text="{loc:Tr session.chipFailed}" VerticalAlignment="Center"
+                         Foreground="{DynamicResource BloodBrush}" />
+            </StackPanel>
+          </Border>
+        </Panel>
+
+      </Grid>
+
+      <!-- ── Roadblock band ── -->
+      <Border DockPanel.Dock="Top"
+              IsVisible="{Binding ShowRoadblock}"
+              Background="{DynamicResource ErrorTintBrush}"
+              BorderBrush="{DynamicResource BloodBrush}"
+              BorderThickness="0,1"
+              Padding="14,8">
+        <StackPanel Spacing="6">
+          <StackPanel Orientation="Horizontal" Spacing="8">
+            <PathIcon Data="{StaticResource Icon.Warning}"
+                      Foreground="{DynamicResource BloodBrush}"
+                      Width="14" Height="14" VerticalAlignment="Center" />
+            <TextBlock Classes="meta" Text="{Binding RoadblockMessage}"
+                       Foreground="{DynamicResource BloodBrush}"
+                       TextWrapping="Wrap" VerticalAlignment="Center" />
+          </StackPanel>
+          <StackPanel Orientation="Horizontal" Spacing="8">
+            <Button Classes="btn accent" Content="Continue"
+                    Command="{Binding ContinueCommand}"
+                    IsVisible="{Binding ShowContinue}" />
+            <Button Classes="btn" Content="Reset &amp; Retry"
+                    Command="{Binding ResetAndRetryCommand}"
+                    IsVisible="{Binding ShowResetAndRetry}" />
+          </StackPanel>
+        </StackPanel>
+      </Border>
+
+      <!-- ── Tab strip ── -->
+      <Border DockPanel.Dock="Top"
+              Background="{DynamicResource Surface2Brush}"
+              BorderBrush="{DynamicResource LineBrush}"
+              BorderThickness="0,0,0,1">
+        <StackPanel Orientation="Horizontal">
+          <Button Classes="tab-btn"
+                  Classes.active="{Binding IsOutputTab}"
+                  Content="Output"
+                  Command="{Binding SelectTabCommand}"
+                  CommandParameter="output" />
+          <Button Classes="tab-btn"
+                  Classes.active="{Binding IsActionsTab}"
+                  Content="Actions"
+                  Command="{Binding SelectTabCommand}"
+                  CommandParameter="actions" />
+          <Button Classes="tab-btn"
+                  Classes.active="{Binding IsSessionTab}"
+                  Content="Session"
+                  Command="{Binding SelectTabCommand}"
+                  CommandParameter="session" />
+        </StackPanel>
+      </Border>
+
+      <!-- ── Tab body ── -->
+      <Grid>
+
+        <!-- Output: embedded SessionTerminalView -->
+        <islands:SessionTerminalView
+            IsVisible="{Binding IsOutputTab}"
+            Entries="{Binding Log}"
+            Label="{Binding SessionLabel}"
+            IsRunning="{Binding IsRunning}"
+            IsDone="{Binding IsDone}"
+            IsFailed="{Binding IsFailed}" />
+
+        <!-- Actions: merge-target + worktree controls -->
+        <ScrollViewer IsVisible="{Binding IsActionsTab}" Padding="14,10">
+          <StackPanel Spacing="10">
+            <StackPanel Spacing="4">
+              <TextBlock Classes="field-label" Text="Merge target" />
+              <ComboBox ItemsSource="{Binding MergeTargetBranches}"
+                        SelectedItem="{Binding SelectedMergeTarget, Mode=TwoWay}"
+                        HorizontalAlignment="Stretch" />
+            </StackPanel>
+            <WrapPanel Orientation="Horizontal">
+              <Button Classes="btn" Content="Open Diff" Margin="0,0,8,8"
+                      Command="{Binding OpenDiffCommand}" />
+              <Button Classes="btn" Margin="0,0,8,8"
+                      Command="{Binding OpenWorktreeCommand}">
+                <StackPanel Orientation="Horizontal" Spacing="5">
+                  <TextBlock Text="Worktree" />
+                  <PathIcon Data="{StaticResource Icon.ArrowOut}" Width="11" Height="11" />
+                </StackPanel>
+              </Button>
+              <Button Classes="btn" Content="Review Combined Diff" Margin="0,0,8,8"
+                      Command="{Binding ReviewCombinedDiffCommand}" />
+              <Button Classes="btn accent" Content="Merge All Subtasks" Margin="0,0,0,8"
+                      Command="{Binding MergeAllCommand}"
+                      IsEnabled="{Binding CanMergeAll}"
+                      ToolTip.Tip="{Binding MergeAllDisabledReason}" />
+            </WrapPanel>
+            <TextBlock Text="{Binding MergeAllError}"
+                       Foreground="{DynamicResource BloodBrush}"
+                       TextWrapping="Wrap"
+                       IsVisible="{Binding MergeAllError,
+                           Converter={x:Static ObjectConverters.IsNotNull}}" />
+          </StackPanel>
+        </ScrollViewer>
+
+        <!-- Session: review block + child outcomes -->
+        <ScrollViewer IsVisible="{Binding IsSessionTab}" Padding="14,10">
+          <StackPanel Spacing="10">
+
+            <!-- Review block -->
+            <StackPanel Spacing="8" IsVisible="{Binding IsWaitingForReview}">
+              <TextBlock Classes="section-label" Text="REVIEW" Margin="0,0,0,2" />
+              <TextBlock Classes="field-label" Text="Feedback" />
+              <TextBox Text="{Binding ReviewFeedback, Mode=TwoWay}"
+                       AcceptsReturn="True"
+                       TextWrapping="Wrap"
+                       MinHeight="60"
+                       MaxHeight="180"
+                       PlaceholderText="Optional feedback for the next run…"
+                       Padding="8"
+                       Background="{DynamicResource Surface2Brush}"
+                       BorderBrush="{DynamicResource LineBrush}"
+                       BorderThickness="1"
+                       CornerRadius="8" />
+              <StackPanel Orientation="Horizontal" Spacing="8">
+                <Button Classes="btn accent" Content="Approve"
+                        Command="{Binding ApproveReviewCommand}" />
+                <Button Classes="btn" Content="Reject"
+                        Command="{Binding RejectReviewCommand}" />
+                <Button Classes="btn" Content="Park"
+                        Command="{Binding ParkReviewCommand}" />
+                <Button Classes="btn" Content="Cancel"
+                        Command="{Binding CancelReviewCommand}" />
+              </StackPanel>
+            </StackPanel>
+
+            <!-- Child outcomes -->
+            <StackPanel Spacing="6" IsVisible="{Binding HasChildOutcomes}">
+              <TextBlock Classes="section-label" Text="OUTCOMES" Margin="0,0,0,2" />
+              <ItemsControl ItemsSource="{Binding ChildOutcomes}">
+                <ItemsControl.ItemTemplate>
+                  <DataTemplate x:DataType="vm:WorkConsoleChildOutcomeRowViewModel">
+                    <Grid ColumnDefinitions="*,Auto,Auto" Margin="0,2">
+                      <TextBlock Grid.Column="0" Text="{Binding Title}"
+                                 TextTrimming="CharacterEllipsis"
+                                 VerticalAlignment="Center" />
+                      <TextBlock Grid.Column="1" Text="{Binding RoadblockText}"
+                                 IsVisible="{Binding HasRoadblock}"
+                                 Foreground="#E0A030"
+                                 Margin="8,0" VerticalAlignment="Center" />
+                      <TextBlock Grid.Column="2" Text="{Binding StatusLabel}"
+                                 Opacity="0.75" VerticalAlignment="Center" />
+                    </Grid>
+                  </DataTemplate>
+                </ItemsControl.ItemTemplate>
+              </ItemsControl>
+            </StackPanel>
+
+          </StackPanel>
+        </ScrollViewer>
+
+      </Grid>
+    </DockPanel>
+  </Border>
+</UserControl>
diff --git a/src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml.cs b/src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml.cs
new file mode 100644
index 0000000..e5edc5d
--- /dev/null
+++ b/src/ClaudeDo.Ui/Views/Islands/Detail/WorkConsole.axaml.cs
@@ -0,0 +1,8 @@
+using Avalonia.Controls;
+
+namespace ClaudeDo.Ui.Views.Islands.Detail;
+
+public partial class WorkConsole : UserControl
+{
+    public WorkConsole() => InitializeComponent();
+}