Merge feat/worktree-overview-modal

docs/superpowers/specs/2026-05-19-worktree-overview-modal-design.md

@@ -0,0 +1,206 @@
+# Worktree Overview Modal — Design
+
+**Status:** Approved
+**Date:** 2026-05-19
+
+## Problem
+
+Worktree management is becoming hard to oversee. The current UI only exposes per-task worktree actions (merge / keep / discard) from `TaskDetailView`, plus two global maintenance buttons (`CleanupFinishedWorktrees`, `ResetAllWorktrees`). There is no view that shows *all existing worktrees at a glance* with their state, age, branch, and diff stat. Stale or "phantom" worktrees (DB row but missing directory, or vice versa) have no targeted recovery path.
+
+## Goals
+
+- A modal that lists every worktree row from the DB, joined with task + list metadata.
+- Two entry points: filtered to one list (List context menu), and global grouped by list (Help menu).
+- Quick per-row actions hidden behind a right-click context menu.
+- Targeted force-remove for stuck / phantom worktrees.
+- Manual refresh only; no live SignalR subscription needed.
+
+## Non-Goals
+
+- No auto-refresh / live updates from SignalR events.
+- No UI tests (the project has none for the Ui project).
+- No changes to `WorktreeManager`, `TaskRunner`, or the existing per-worktree file-tree modal (`WorktreeModalView`) — it gets reused as the "Show diff" target.
+
+## UI
+
+### New view pair
+
+`WorktreesOverviewModalView` + `WorktreesOverviewModalViewModel`, parallel to existing `WorktreeModalView` (which shows the *file tree inside one* worktree).
+
+### Layout
+
+```
+┌─ Worktrees [List "Foo"]  or  Worktrees (all) ───────────────┐
+│ [ Refresh ]  [ Cleanup finished ]                            │
+│                                                              │
+│ ▼ List Foo                       (global mode only)          │
+│   Title          Branch       State    +/-    Age            │
+│   Fix login bug  claudedo/ab… Active   +42-7  3h ago         │
+│   Add API …      claudedo/cd… Merged   +8 -0  1d ago         │
+│ ▼ List Bar                                                   │
+│   …                                                          │
+└──────────────────────────────────────────────────────────────┘
+```
+
+- `DataGrid` (or `ItemsControl` with Grid template) for rows.
+- List-filtered mode: no group headers, just the table.
+- Global mode: `Expander` per list with list name as header (default expanded).
+- State as a colored badge — new `WorktreeStateColorConverter` analogous to `StatusColorConverter`:
+  - Active=Blue, Merged=Green, Discarded=Gray, Kept=Orange.
+- Right-click on a row opens a `MenuFlyout` with all actions.
+- Phantom rows (`PathExistsOnDisk == false`) get a small warning icon in the Path tooltip area.
+
+### Default sort
+
+State (Active first), then `CreatedAt` descending. Same inside each list group in global mode.
+
+### Per-row context menu
+
+| Item | Enabled when | Behavior |
+|---|---|---|
+| Show diff | always | Opens existing `WorktreeModalView` with `WorktreePath` set |
+| Open in Explorer | `PathExistsOnDisk == true` | `Process.Start("explorer.exe", path)` |
+| Jump to task | always | Closes modal, selects list + task in main window |
+| Merge | `State == Active` | Calls existing `MergeTask` hub method |
+| Discard | `State == Active` | `SetWorktreeState(taskId, Discarded)` |
+| Keep | `State == Active` | `SetWorktreeState(taskId, Kept)` |
+| Copy branch | always | Clipboard |
+| Copy path | always | Clipboard |
+| —————— | | (separator) |
+| Force remove | `Task.Status != Running` | Confirmation dialog → `ForceRemoveWorktree(taskId)` (red label) |
+
+### Bulk buttons (toolbar)
+
+- **Refresh** — re-runs `GetWorktreesOverview`.
+- **Cleanup finished** — `CleanupFinishedWorktrees(listId)`; in list-filtered mode acts on that list, in global mode on all.
+
+### Entry points
+
+- **List context menu** → "Worktrees anzeigen…" → opens modal in filtered mode (`listId` = the list).
+- **Help menu** → "Worktrees" → opens modal in global mode (`listId = null`).
+
+`MainWindowViewModel` gets `OpenWorktreesOverviewCommand(listId)` and `OpenWorktreesOverviewGlobalCommand()`, both using a DI `Func<WorktreesOverviewModalViewModel>` factory analogous to existing editor patterns.
+
+## SignalR Contract
+
+### New `WorkerHub` methods
+
+```csharp
+Task<IReadOnlyList<WorktreeOverviewDto>> GetWorktreesOverview(string? listId);
+Task<bool> SetWorktreeState(string taskId, WorktreeState newState);
+Task<ForceRemoveResultDto> ForceRemoveWorktree(string taskId);
+```
+
+`CleanupFinishedWorktrees` already exists — extend its signature to accept an optional `listId`:
+
+```csharp
+Task<CleanupResult> CleanupFinishedWorktrees(string? listId);   // was: ()
+```
+
+`MergeTask` is reused unchanged.
+
+### DTOs
+
+```csharp
+public sealed record WorktreeOverviewDto(
+    string TaskId,
+    string TaskTitle,
+    TaskStatus TaskStatus,
+    string ListId,
+    string ListName,
+    string Path,
+    string BranchName,
+    WorktreeState State,
+    string? DiffStat,
+    DateTime CreatedAt,
+    bool PathExistsOnDisk);
+
+public sealed record ForceRemoveResultDto(bool Removed, string? Reason);
+```
+
+### Broadcasts
+
+After successful `SetWorktreeState` and `ForceRemoveWorktree`, fire `HubBroadcaster.WorktreeUpdated(taskId)` so `TaskDetailView` (if open) refreshes. `CleanupFinishedWorktrees` already broadcasts; keep behavior, optionally batch.
+
+### `WorkerClient` (UI)
+
+Add wrapper methods for the four new/changed hub calls.
+
+## Backend Changes
+
+### `WorktreeMaintenanceService`
+
+```csharp
+public sealed record ForceRemoveResult(bool Removed, string? Reason);
+
+public Task<IReadOnlyList<WorktreeOverviewRow>> GetOverviewAsync(string? listId, CancellationToken ct);
+public Task<CleanupResult> CleanupFinishedAsync(string? listId, CancellationToken ct);   // signature extended
+public Task<ForceRemoveResult> ForceRemoveAsync(string taskId, CancellationToken ct);
+```
+
+- `GetOverviewAsync` — joins `worktrees × tasks × lists` (`AsNoTracking`), maps to DTO including `PathExistsOnDisk = Directory.Exists(path)`.
+- `CleanupFinishedAsync(listId)` — same join as today but also filters `t.ListId == listId` when not null.
+- `ForceRemoveAsync` — refactors existing `TryRemoveAsync(row, force: true, …)` into a single-row entry point shared with `ResetAllAsync`. Refuses when the task is currently `Running`, returning `ForceRemoveResult(false, "task is currently running")`. Otherwise removes the worktree directory, prunes, deletes the branch, deletes the DB row.
+
+### `WorktreeRepository`
+
+`SetStateAsync(string taskId, WorktreeState newState, CancellationToken ct)` already documented in CLAUDE.md. If absent, add it; if present, just expose it via the hub.
+
+### Unchanged
+
+`WorktreeManager`, `TaskRunner`, `WorktreeModalView`, all existing merge / cleanup flows.
+
+## Data Flow
+
+1. User opens modal → `WorkerClient.GetWorktreesOverviewAsync(listId)` → bind rows.
+2. Refresh button → same call.
+3. Per-row action → corresponding hub call → on success, update the affected row locally (no full reload).
+4. Bulk Cleanup → hub call → full reload.
+
+## Force-Remove Semantics
+
+| Initial state | Result |
+|---|---|
+| Active, task not Running | Worktree dir removed, branch deleted, DB row deleted. Task remains in current status (Done/Failed/Idle). |
+| Active, task Running | Refused with reason "task is currently running". |
+| Merged / Discarded / Kept | Same removal path. |
+| Phantom (dir missing) | DB row deleted, branch best-effort deleted. |
+
+## Testing
+
+New tests in `tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs` (real SQLite, real git):
+
+1. `GetOverviewAsync_returns_all_when_listId_null`
+2. `GetOverviewAsync_filters_by_listId`
+3. `GetOverviewAsync_flags_PathExistsOnDisk_false_for_phantom_row`
+4. `CleanupFinishedAsync_filters_by_listId`
+5. `ForceRemoveAsync_removes_active_worktree` (happy path incl. branch delete)
+6. `ForceRemoveAsync_blocked_when_task_running`
+7. `ForceRemoveAsync_removes_phantom_row`
+
+UI verification (manual):
+
+- Open from list context menu → only that list's rows.
+- Open from Help menu → all lists grouped, default expanded.
+- Force-remove an Active worktree → row vanishes, DB row gone, branch deleted.
+- Force-remove while task Running → toast / dialog with reason, row unchanged.
+- Cleanup finished in filtered mode → only finished rows of the selected list disappear.
+- "Show diff" reuses existing `WorktreeModalView`.
+
+## Files Touched
+
+**New:**
+- `src/ClaudeDo.Ui/ViewModels/Modals/WorktreesOverviewModalViewModel.cs`
+- `src/ClaudeDo.Ui/Views/Modals/WorktreesOverviewModalView.axaml`
+- `src/ClaudeDo.Ui/Views/Modals/WorktreesOverviewModalView.axaml.cs`
+- `src/ClaudeDo.Ui/Converters/WorktreeStateColorConverter.cs`
+- `src/ClaudeDo.Worker/Worktrees/WorktreeOverviewDto.cs` (or extend an existing DTOs file)
+
+**Modified:**
+- `src/ClaudeDo.Worker/Worktrees/WorktreeMaintenanceService.cs`
+- `src/ClaudeDo.Worker/Hub/WorkerHub.cs`
+- `src/ClaudeDo.Ui/Services/WorkerClient.cs`
+- `src/ClaudeDo.Ui/ViewModels/MainWindowViewModel.cs`
+- `src/ClaudeDo.Ui/Views/MainWindow.axaml` (Help menu entry, list context menu entry)
+- `src/ClaudeDo.App/Program.cs` (DI registration of new VM)
+- `tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs`

src/ClaudeDo.App/Program.cs

@@ -95,6 +95,9 @@ sealed class Program
 
         // ViewModels
         sc.AddTransient<WorktreeModalViewModel>();
+        sc.AddTransient<Func<WorktreeModalViewModel>>(sp => () => sp.GetRequiredService<WorktreeModalViewModel>());
+        sc.AddTransient<WorktreesOverviewModalViewModel>();
+        sc.AddTransient<Func<WorktreesOverviewModalViewModel>>(sp => () => sp.GetRequiredService<WorktreesOverviewModalViewModel>());
         sc.AddSingleton<IPrimeScheduleApi, WorkerPrimeScheduleApi>();
         sc.AddTransient<PrimeClaudeTabViewModel>();
         sc.AddTransient<SettingsModalViewModel>();

src/ClaudeDo.Data/Git/GitService.cs

@@ -35,6 +35,15 @@ public sealed class GitService
         return stdout;
     }
 
+    public async Task<string> GetCommittedFilesAsync(string worktreePath, string baseCommit, CancellationToken ct = default)
+    {
+        var (exitCode, stdout, stderr) = await RunGitAsync(worktreePath,
+            ["diff", "--name-status", $"{baseCommit}..HEAD"], ct);
+        if (exitCode != 0)
+            throw new InvalidOperationException($"git diff --name-status failed (exit {exitCode}): {stderr}");
+        return stdout;
+    }
+
     public async Task<bool> HasChangesAsync(string worktreePath, CancellationToken ct = default)
     {
         var (exitCode, stdout, stderr) = await RunGitAsync(worktreePath, ["status", "--porcelain"], ct);
@@ -97,6 +106,15 @@ public sealed class GitService
         return stdout.Trim();
     }
 
+    public async Task<string> GetFileDiffAsync(string worktreePath, string? baseCommit, string relativePath, CancellationToken ct = default)
+    {
+        string[] args = string.IsNullOrEmpty(baseCommit)
+            ? ["diff", "--", relativePath]
+            : ["diff", $"{baseCommit}..HEAD", "--", relativePath];
+        var (_, stdout, _) = await RunGitAsync(worktreePath, args, ct);
+        return stdout;
+    }
+
     public async Task WorktreeRemoveAsync(string repoDir, string worktreePath, bool force = false, CancellationToken ct = default)
     {
         var args = new List<string> { "worktree", "remove" };

src/ClaudeDo.Ui/Converters/DiffLineKindToBrushConverter.cs

@@ -0,0 +1,24 @@
+using System.Globalization;
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+using ClaudeDo.Ui.ViewModels.Modals;
+
+namespace ClaudeDo.Ui.Converters;
+
+public sealed class DiffLineKindToBrushConverter : IValueConverter
+{
+    public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) =>
+        value is WorktreeDiffLineKind kind
+            ? kind switch
+            {
+                WorktreeDiffLineKind.Added   => new SolidColorBrush(Color.Parse("#66BB6A")),
+                WorktreeDiffLineKind.Removed => new SolidColorBrush(Color.Parse("#EF5350")),
+                WorktreeDiffLineKind.Hunk    => new SolidColorBrush(Color.Parse("#42A5F5")),
+                WorktreeDiffLineKind.Header  => new SolidColorBrush(Color.Parse("#9E9E9E")),
+                _                            => new SolidColorBrush(Color.Parse("#CFD8DC")),
+            }
+            : new SolidColorBrush(Color.Parse("#CFD8DC"));
+
+    public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+        => throw new NotSupportedException();
+}

src/ClaudeDo.Ui/Converters/WorktreeStateColorConverter.cs

@@ -0,0 +1,24 @@
+using System.Globalization;
+using Avalonia.Data.Converters;
+using Avalonia.Media;
+using ClaudeDo.Data.Models;
+
+namespace ClaudeDo.Ui.Converters;
+
+public sealed class WorktreeStateColorConverter : IValueConverter
+{
+    public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture) =>
+        value is WorktreeState state
+            ? state switch
+            {
+                WorktreeState.Active    => new SolidColorBrush(Color.Parse("#42A5F5")),
+                WorktreeState.Merged    => new SolidColorBrush(Color.Parse("#66BB6A")),
+                WorktreeState.Discarded => new SolidColorBrush(Color.Parse("#9E9E9E")),
+                WorktreeState.Kept      => new SolidColorBrush(Color.Parse("#FFA726")),
+                _                       => new SolidColorBrush(Colors.Gray),
+            }
+            : new SolidColorBrush(Colors.Gray);
+
+    public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+        => throw new NotSupportedException();
+}

src/ClaudeDo.Ui/Services/WorkerClient.cs

@@ -395,11 +395,11 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable, IWorkerC
         await _hub.InvokeAsync("SetTaskStatus", taskId, status.ToString());
     }
 
-    public async Task<WorktreeCleanupDto?> CleanupFinishedWorktreesAsync()
+    public async Task<WorktreeCleanupDto?> CleanupFinishedWorktreesAsync(string? listId = null)
     {
         try
         {
-            return await _hub.InvokeAsync<WorktreeCleanupDto>("CleanupFinishedWorktrees");
+            return await _hub.InvokeAsync<WorktreeCleanupDto>("CleanupFinishedWorktrees", listId);
         }
         catch
         {
@@ -419,6 +419,43 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable, IWorkerC
         }
     }
 
+    public async Task<List<WorktreeOverviewDto>> GetWorktreesOverviewAsync(string? listId)
+    {
+        try
+        {
+            var rows = await _hub.InvokeAsync<List<WorktreeOverviewDto>>("GetWorktreesOverview", listId);
+            return rows ?? new List<WorktreeOverviewDto>();
+        }
+        catch
+        {
+            return new List<WorktreeOverviewDto>();
+        }
+    }
+
+    public async Task<bool> SetWorktreeStateAsync(string taskId, WorktreeState newState)
+    {
+        try
+        {
+            return await _hub.InvokeAsync<bool>("SetWorktreeState", taskId, newState);
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public async Task<ForceRemoveResultDto?> ForceRemoveWorktreeAsync(string taskId)
+    {
+        try
+        {
+            return await _hub.InvokeAsync<ForceRemoveResultDto>("ForceRemoveWorktree", taskId);
+        }
+        catch
+        {
+            return null;
+        }
+    }
+
     public async Task<PlanningSessionStartInfo> StartPlanningSessionAsync(string taskId, CancellationToken ct = default)
         => await _hub.InvokeAsync<PlanningSessionStartInfo>("StartPlanningSessionAsync", taskId, ct);
 
@@ -523,3 +560,19 @@ public sealed record UpdateListConfigDto(string ListId, string? Model, string? S
 public sealed record UpdateTaskAgentSettingsDto(string TaskId, string? Model, string? SystemPrompt, string? AgentPath);
 public sealed record ListConfigDto(string? Model, string? SystemPrompt, string? AgentPath);
 public sealed record SeedResultDto(int Copied, int Skipped);
+
+public sealed record WorktreeOverviewDto(
+    string TaskId,
+    string TaskTitle,
+    ClaudeDo.Data.Models.TaskStatus TaskStatus,
+    string ListId,
+    string ListName,
+    string Path,
+    string BranchName,
+    string BaseCommit,
+    WorktreeState State,
+    string? DiffStat,
+    DateTime CreatedAt,
+    bool PathExistsOnDisk);
+
+public sealed record ForceRemoveResultDto(bool Removed, string? Reason);

src/ClaudeDo.Ui/ViewModels/Islands/ListsIslandViewModel.cs

@@ -28,6 +28,7 @@ public sealed partial class ListsIslandViewModel : ViewModelBase
 
     public Func<SettingsModalViewModel, Task>? ShowSettingsModal { get; set; }
     public Func<ListSettingsModalViewModel, System.Threading.Tasks.Task>? ShowListSettingsModal { get; set; }
+    public Func<WorktreesOverviewModalViewModel, Task>? ShowWorktreesOverviewModal { get; set; }
 
     [RelayCommand]
     private async Task OpenSettings()
@@ -49,6 +50,18 @@ public sealed partial class ListsIslandViewModel : ViewModelBase
         await RefreshRowAsync(row.Id);
     }
 
+    [RelayCommand]
+    private async Task OpenWorktreesOverviewAsync(ListNavItemViewModel? row)
+    {
+        if (row is null || ShowWorktreesOverviewModal is null || _services is null) return;
+        if (row.Kind != ListKind.User) return;
+        var rawId = row.Id.StartsWith("user:", StringComparison.Ordinal) ? row.Id["user:".Length..] : row.Id;
+        var vm = _services.GetRequiredService<WorktreesOverviewModalViewModel>();
+        vm.Configure(rawId, row.Name);
+        await vm.LoadAsync();
+        await ShowWorktreesOverviewModal(vm);
+    }
+
     public ObservableCollection<ListNavItemViewModel> Items { get; } = new();
     public ObservableCollection<ListNavItemViewModel> SmartLists { get; } = new();
     public ObservableCollection<ListNavItemViewModel> UserLists { get; } = new();

src/ClaudeDo.Ui/ViewModels/IslandsShellViewModel.cs

@@ -32,6 +32,7 @@ public sealed partial class IslandsShellViewModel : ViewModelBase
     private readonly UpdateCheckService _updateCheck;
     private readonly InstallerLocator _installerLocator;
     private readonly IDbContextFactory<ClaudeDoDbContext>? _dbFactory;
+    private readonly Func<WorktreesOverviewModalViewModel> _worktreesOverviewVmFactory = () => null!;
 
     // Set by MainWindow to open the conflict resolution dialog.
     public Func<ConflictResolutionViewModel, Task>? ShowConflictDialog { get; set; }
@@ -39,6 +40,9 @@ public sealed partial class IslandsShellViewModel : ViewModelBase
     // Set by MainWindow to open the About dialog.
     public Func<AboutModalViewModel, Task>? ShowAboutModal { get; set; }
 
+    // Set by MainWindow to open the global worktrees overview dialog.
+    public Func<WorktreesOverviewModalViewModel, Task>? ShowWorktreesOverviewModal { get; set; }
+
     [ObservableProperty] private bool _isUpdateBannerVisible;
     [ObservableProperty] private string? _updateBannerLatestVersion;
     [ObservableProperty] private string? _inlineUpdateStatus;
@@ -159,12 +163,14 @@ public sealed partial class IslandsShellViewModel : ViewModelBase
         WorkerClient worker,
         UpdateCheckService updateCheck,
         InstallerLocator installerLocator,
-        IDbContextFactory<ClaudeDoDbContext> dbFactory)
+        IDbContextFactory<ClaudeDoDbContext> dbFactory,
+        Func<WorktreesOverviewModalViewModel> worktreesOverviewVmFactory)
     {
         Lists = lists; Tasks = tasks; Details = details; Worker = worker;
         _updateCheck = updateCheck;
         _installerLocator = installerLocator;
         _dbFactory = dbFactory;
+        _worktreesOverviewVmFactory = worktreesOverviewVmFactory;
         Lists.SelectionChanged += (_, _) => Tasks.LoadForList(Lists.SelectedList);
         Tasks.SelectionChanged += (_, _) => Details.Bind(Tasks.SelectedTask);
         Tasks.TasksChanged     += (_, _) => _ = Lists.RefreshCountsAsync();
@@ -249,6 +255,16 @@ public sealed partial class IslandsShellViewModel : ViewModelBase
         if (ShowAboutModal is not null) await ShowAboutModal(vm);
     }
 
+    [RelayCommand]
+    private async Task OpenWorktreesOverviewGlobalAsync()
+    {
+        if (ShowWorktreesOverviewModal is null) return;
+        var vm = _worktreesOverviewVmFactory();
+        vm.Configure(null, null);
+        await vm.LoadAsync();
+        await ShowWorktreesOverviewModal(vm);
+    }
+
     [RelayCommand]
     private async Task CheckForUpdatesAsync()
     {

src/ClaudeDo.Ui/ViewModels/Modals/WorktreeModalViewModel.cs

@@ -5,12 +5,22 @@ using ClaudeDo.Data.Git;
 
 namespace ClaudeDo.Ui.ViewModels.Modals;
 
+public enum WorktreeDiffLineKind { Header, Hunk, Added, Removed, Context }
+
+public sealed partial class WorktreeDiffLineViewModel : ViewModelBase
+{
+    public required string Text { get; init; }
+    public required WorktreeDiffLineKind Kind { get; init; }
+}
+
 public sealed partial class WorktreeNodeViewModel : ViewModelBase
 {
     public required string Name { get; init; }
     public string? Status { get; init; }
     public bool IsDirectory { get; init; }
+    public string RelativePath { get; init; } = "";
     public ObservableCollection<WorktreeNodeViewModel> Children { get; } = new();
+    [ObservableProperty] private bool _isExpanded = true;
 }
 
 public sealed partial class WorktreeModalViewModel : ViewModelBase
@@ -18,8 +28,11 @@ public sealed partial class WorktreeModalViewModel : ViewModelBase
     private readonly GitService _git;
 
     public ObservableCollection<WorktreeNodeViewModel> Root { get; } = new();
+    public ObservableCollection<WorktreeDiffLineViewModel> SelectedFileDiffLines { get; } = new();
 
     [ObservableProperty] private string _worktreePath = "";
+    [ObservableProperty] private string? _baseCommit;
+    [ObservableProperty] private WorktreeNodeViewModel? _selectedNode;
 
     // Set by the view (same pattern as DiffModalViewModel.CloseAction)
     public Action? CloseAction { get; set; }
@@ -29,6 +42,43 @@ public sealed partial class WorktreeModalViewModel : ViewModelBase
         _git = git;
     }
 
+    partial void OnSelectedNodeChanged(WorktreeNodeViewModel? value)
+    {
+        _ = LoadFileDiffAsync(value);
+    }
+
+    private async Task LoadFileDiffAsync(WorktreeNodeViewModel? node)
+    {
+        SelectedFileDiffLines.Clear();
+
+        if (node is null || node.IsDirectory || string.IsNullOrEmpty(node.RelativePath))
+            return;
+
+        string diff;
+        try
+        {
+            diff = await _git.GetFileDiffAsync(WorktreePath, BaseCommit, node.RelativePath);
+        }
+        catch
+        {
+            return;
+        }
+
+        foreach (var line in diff.Split('\n'))
+        {
+            var kind = line switch
+            {
+                _ when line.StartsWith("+++") || line.StartsWith("---") => WorktreeDiffLineKind.Header,
+                _ when line.StartsWith("@@")                            => WorktreeDiffLineKind.Hunk,
+                _ when line.StartsWith('+')                             => WorktreeDiffLineKind.Added,
+                _ when line.StartsWith('-')                             => WorktreeDiffLineKind.Removed,
+                _ when line.StartsWith("diff ") || line.StartsWith("index ") || line.StartsWith("\\ ") => WorktreeDiffLineKind.Header,
+                _                                                       => WorktreeDiffLineKind.Context,
+            };
+            SelectedFileDiffLines.Add(new WorktreeDiffLineViewModel { Text = line, Kind = kind });
+        }
+    }
+
     [RelayCommand]
     private void Close() => CloseAction?.Invoke();
 
@@ -37,7 +87,13 @@ public sealed partial class WorktreeModalViewModel : ViewModelBase
         Root.Clear();
 
         string stdout;
-        try { stdout = await _git.GetStatusPorcelainAsync(WorktreePath, ct); }
+        bool committedMode = !string.IsNullOrEmpty(BaseCommit);
+        try
+        {
+            stdout = committedMode
+                ? await _git.GetCommittedFilesAsync(WorktreePath, BaseCommit!, ct)
+                : await _git.GetStatusPorcelainAsync(WorktreePath, ct);
+        }
         catch { return; }
 
         if (string.IsNullOrWhiteSpace(stdout)) return;
@@ -46,14 +102,27 @@ public sealed partial class WorktreeModalViewModel : ViewModelBase
 
         foreach (var line in stdout.Split('\n', StringSplitOptions.RemoveEmptyEntries))
         {
-            if (line.Length < 4) continue;
+            string? path;
+            string? status;
 
-            // porcelain format: XY<space>path  (XY = two-char status)
+            if (committedMode)
+            {
+                // diff --name-status format: <status>\t<path>
+                var tab = line.IndexOf('\t');
+                if (tab < 0) continue;
+                var statusChar = line[0];
+                status = statusChar != ' ' ? statusChar.ToString() : null;
+                path = line[(tab + 1)..].Trim().Replace('\\', '/');
+            }
+            else
+            {
+                // porcelain format: XY<space>path
+                if (line.Length < 4) continue;
                 var xy = line[..2];
-            // Pick staged char first, fall back to unstaged
                 var statusChar = xy[0] != ' ' ? xy[0] : xy[1];
-            var status = statusChar != ' ' ? statusChar.ToString() : null;
+                status = statusChar != ' ' ? statusChar.ToString() : null;
-            var path = line[3..].Trim().Replace('\\', '/');
+                path = line[3..].Trim().Replace('\\', '/');
+            }
 
             var segments = path.Split('/', StringSplitOptions.RemoveEmptyEntries);
             if (segments.Length == 0) continue;
@@ -77,10 +146,24 @@ public sealed partial class WorktreeModalViewModel : ViewModelBase
             {
                 Name = segments[^1],
                 Status = status,
-                IsDirectory = false
+                IsDirectory = false,
+                RelativePath = path
             };
             if (parent == null) Root.Add(leaf);
             else parent.Children.Add(leaf);
         }
+
+        SelectedNode = FindFirstLeaf(Root);
+    }
+
+    private static WorktreeNodeViewModel? FindFirstLeaf(IEnumerable<WorktreeNodeViewModel> nodes)
+    {
+        foreach (var n in nodes)
+        {
+            if (!n.IsDirectory) return n;
+            var nested = FindFirstLeaf(n.Children);
+            if (nested is not null) return nested;
+        }
+        return null;
     }
 }

src/ClaudeDo.Ui/ViewModels/Modals/WorktreesOverviewModalViewModel.cs

@@ -0,0 +1,239 @@
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Input.Platform;
+using ClaudeDo.Data.Models;
+using ClaudeDo.Ui.Services;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
+
+namespace ClaudeDo.Ui.ViewModels.Modals;
+
+public sealed partial class WorktreeOverviewRowViewModel : ViewModelBase
+{
+    [ObservableProperty] private string _taskId = "";
+    [ObservableProperty] private string _taskTitle = "";
+    [ObservableProperty] private TaskStatus _taskStatus;
+    [ObservableProperty] private string _listId = "";
+    [ObservableProperty] private string _listName = "";
+    [ObservableProperty] private string _path = "";
+    [ObservableProperty] private string _branchName = "";
+    [ObservableProperty] private string _baseCommit = "";
+    [ObservableProperty] private WorktreeState _state;
+    [ObservableProperty] private string? _diffStat;
+    [ObservableProperty] private DateTime _createdAt;
+    [ObservableProperty] private bool _pathExistsOnDisk;
+    [ObservableProperty] private bool _isSelected;
+
+    public string AgeText => FormatAge(DateTime.UtcNow - CreatedAt);
+    public bool IsActive => State == WorktreeState.Active;
+    public bool IsRunning => TaskStatus == TaskStatus.Running;
+
+    private static string FormatAge(TimeSpan ts)
+    {
+        if (ts.TotalDays >= 1) return $"{(int)ts.TotalDays}d ago";
+        if (ts.TotalHours >= 1) return $"{(int)ts.TotalHours}h ago";
+        if (ts.TotalMinutes >= 1) return $"{(int)ts.TotalMinutes}m ago";
+        return "just now";
+    }
+}
+
+public sealed partial class WorktreesGroupViewModel : ViewModelBase
+{
+    public required string ListId { get; init; }
+    public required string ListName { get; init; }
+    public ObservableCollection<WorktreeOverviewRowViewModel> Rows { get; } = new();
+}
+
+public sealed partial class WorktreesOverviewModalViewModel : ViewModelBase
+{
+    private readonly WorkerClient _worker;
+    private readonly Func<WorktreeModalViewModel> _diffVmFactory;
+
+    [ObservableProperty] private string? _listIdFilter;
+    [ObservableProperty] private string _title = "Worktrees";
+    [ObservableProperty] private bool _isGlobal;
+    [ObservableProperty] private bool _isBusy;
+    [ObservableProperty] private string? _statusMessage;
+    [ObservableProperty] private WorktreeOverviewRowViewModel? _selectedRow;
+
+    public ObservableCollection<WorktreeOverviewRowViewModel> Rows { get; } = new();
+    public ObservableCollection<WorktreesGroupViewModel> Groups { get; } = new();
+
+    public Action? CloseAction { get; set; }
+    public Action<WorktreeModalViewModel>? ShowDiffAction { get; set; }
+    public Action<string, string>? JumpToTaskAction { get; set; }
+    public Func<string, Task<bool>>? ConfirmAction { get; set; }
+
+    public WorktreesOverviewModalViewModel(WorkerClient worker, Func<WorktreeModalViewModel> diffVmFactory)
+    {
+        _worker = worker;
+        _diffVmFactory = diffVmFactory;
+    }
+
+    public void SelectRow(WorktreeOverviewRowViewModel row)
+    {
+        if (SelectedRow is not null) SelectedRow.IsSelected = false;
+        SelectedRow = row;
+        row.IsSelected = true;
+    }
+
+    public void Configure(string? listId, string? listName)
+    {
+        ListIdFilter = listId;
+        IsGlobal = listId is null;
+        Title = listId is null ? "Worktrees" : $"Worktrees — {listName ?? "list"}";
+    }
+
+    public async Task LoadAsync(CancellationToken ct = default)
+    {
+        IsBusy = true;
+        try
+        {
+            var dtos = await _worker.GetWorktreesOverviewAsync(ListIdFilter);
+            var ordered = dtos
+                .OrderBy(d => d.State == WorktreeState.Active ? 0 : 1)
+                .ThenByDescending(d => d.CreatedAt)
+                .Select(Map)
+                .ToList();
+
+            Rows.Clear();
+            Groups.Clear();
+            if (IsGlobal)
+            {
+                foreach (var grp in ordered.GroupBy(r => (r.ListId, r.ListName)).OrderBy(g => g.Key.ListName))
+                {
+                    var group = new WorktreesGroupViewModel { ListId = grp.Key.ListId, ListName = grp.Key.ListName };
+                    foreach (var row in grp) group.Rows.Add(row);
+                    Groups.Add(group);
+                }
+            }
+            else
+            {
+                foreach (var row in ordered) Rows.Add(row);
+            }
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+
+    [RelayCommand]
+    private Task Refresh()
+    {
+        StatusMessage = null;
+        return LoadAsync();
+    }
+
+    [RelayCommand]
+    private async Task CleanupFinished()
+    {
+        IsBusy = true;
+        try
+        {
+            var result = await _worker.CleanupFinishedWorktreesAsync(ListIdFilter);
+            StatusMessage = result is null ? "Cleanup failed." : $"Removed {result.Removed} worktree(s).";
+            await LoadAsync();
+        }
+        finally { IsBusy = false; }
+    }
+
+    [RelayCommand]
+    private void Close() => CloseAction?.Invoke();
+
+    [RelayCommand]
+    private void ShowDiff(WorktreeOverviewRowViewModel? row)
+    {
+        if (row is null) return;
+        var diffVm = _diffVmFactory();
+        diffVm.WorktreePath = row.Path;
+        diffVm.BaseCommit = string.IsNullOrEmpty(row.BaseCommit) ? null : row.BaseCommit;
+        ShowDiffAction?.Invoke(diffVm);
+    }
+
+    [RelayCommand]
+    private void OpenInExplorer(WorktreeOverviewRowViewModel? row)
+    {
+        if (row is null || !row.PathExistsOnDisk) return;
+        try { Process.Start(new ProcessStartInfo { FileName = "explorer.exe", Arguments = $"\"{row.Path}\"", UseShellExecute = true }); }
+        catch { }
+    }
+
+    [RelayCommand]
+    private void JumpToTask(WorktreeOverviewRowViewModel? row)
+    {
+        if (row is null) return;
+        JumpToTaskAction?.Invoke(row.ListId, row.TaskId);
+        CloseAction?.Invoke();
+    }
+
+    [RelayCommand]
+    private async Task Discard(WorktreeOverviewRowViewModel? row)
+    {
+        if (row is null || row.State != WorktreeState.Active) return;
+        if (await _worker.SetWorktreeStateAsync(row.TaskId, WorktreeState.Discarded))
+            row.State = WorktreeState.Discarded;
+    }
+
+    [RelayCommand]
+    private async Task Keep(WorktreeOverviewRowViewModel? row)
+    {
+        if (row is null || row.State != WorktreeState.Active) return;
+        if (await _worker.SetWorktreeStateAsync(row.TaskId, WorktreeState.Kept))
+            row.State = WorktreeState.Kept;
+    }
+
+    [RelayCommand]
+    private async Task ForceRemove(WorktreeOverviewRowViewModel? row)
+    {
+        if (row is null) return;
+        if (row.IsRunning) { StatusMessage = "Cannot force-remove a running task."; return; }
+        if (ConfirmAction is not null && !await ConfirmAction($"Force remove worktree for '{row.TaskTitle}'? This deletes the directory and branch.")) return;
+
+        var result = await _worker.ForceRemoveWorktreeAsync(row.TaskId);
+        if (result is null || !result.Removed)
+        {
+            StatusMessage = result?.Reason ?? "Force remove failed.";
+            return;
+        }
+        if (IsGlobal)
+        {
+            foreach (var grp in Groups)
+            {
+                var idx = grp.Rows.IndexOf(row);
+                if (idx >= 0) { grp.Rows.RemoveAt(idx); break; }
+            }
+        }
+        else
+        {
+            Rows.Remove(row);
+        }
+    }
+
+    [RelayCommand]
+    private Task CopyBranch(WorktreeOverviewRowViewModel? row) => CopyToClipboardAsync(row?.BranchName);
+
+    [RelayCommand]
+    private Task CopyPath(WorktreeOverviewRowViewModel? row) => CopyToClipboardAsync(row?.Path);
+
+    private static async Task CopyToClipboardAsync(string? text)
+    {
+        if (string.IsNullOrEmpty(text)) return;
+        if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop &&
+            desktop.MainWindow?.Clipboard is { } clipboard)
+        {
+            try { await clipboard.SetTextAsync(text); } catch { }
+        }
+    }
+
+    private static WorktreeOverviewRowViewModel Map(WorktreeOverviewDto d) => new()
+    {
+        TaskId = d.TaskId, TaskTitle = d.TaskTitle, TaskStatus = d.TaskStatus,
+        ListId = d.ListId, ListName = d.ListName,
+        Path = d.Path, BranchName = d.BranchName, BaseCommit = d.BaseCommit, State = d.State,
+        DiffStat = d.DiffStat, CreatedAt = d.CreatedAt, PathExistsOnDisk = d.PathExistsOnDisk,
+    };
+}

src/ClaudeDo.Ui/Views/Islands/ListsIslandView.axaml

@@ -132,6 +132,9 @@
                     <MenuItem Header="Settings..."
                               Command="{Binding $parent[UserControl].((vm:ListsIslandViewModel)DataContext).OpenListSettingsCommand}"
                               CommandParameter="{Binding}"/>
+                    <MenuItem Header="Worktrees…"
+                              Command="{Binding $parent[UserControl].((vm:ListsIslandViewModel)DataContext).OpenWorktreesOverviewCommand}"
+                              CommandParameter="{Binding}"/>
                   </ContextMenu>
                 </Border.ContextMenu>
                 <Grid ColumnDefinitions="20,*,Auto">

src/ClaudeDo.Ui/Views/Islands/ListsIslandView.axaml.cs

@@ -1,3 +1,4 @@
+using System.Linq;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
 using ClaudeDo.Ui.ViewModels.Islands;
@@ -25,6 +26,31 @@ public partial class ListsIslandView : UserControl
                     if (top is null) window.Show();
                     else await window.ShowDialog(top);
                 };
+                vm.ShowWorktreesOverviewModal = async modal =>
+                {
+                    var window = new WorktreesOverviewModalView { DataContext = modal };
+                    modal.CloseAction = () => window.Close();
+                    modal.JumpToTaskAction = (listId, _) =>
+                    {
+                        if (vm is { } v)
+                        {
+                            var item = v.UserLists.FirstOrDefault(l => l.Id == $"user:{listId}");
+                            if (item is not null) v.SelectedList = item;
+                        }
+                    };
+                    modal.ShowDiffAction = diffVm =>
+                    {
+                        var top2 = TopLevel.GetTopLevel(this) as Window;
+                        if (top2 is null) return;
+                        var dlg = new WorktreeModalView { DataContext = diffVm };
+                        diffVm.CloseAction = () => dlg.Close();
+                        _ = diffVm.LoadAsync();
+                        _ = dlg.ShowDialog(top2);
+                    };
+                    var top = TopLevel.GetTopLevel(this) as Window;
+                    if (top is null) window.Show();
+                    else await window.ShowDialog(top);
+                };
             }
         };
     }

src/ClaudeDo.Ui/Views/MainWindow.axaml

@@ -69,6 +69,8 @@
                         Command="{Binding CheckForUpdatesCommand}"/>
               <MenuItem Header="Restart worker"
                         Command="{Binding RestartWorkerCommand}"/>
+              <MenuItem Header="Worktrees…"
+                        Command="{Binding OpenWorktreesOverviewGlobalCommand}"/>
               <MenuItem Header="About…" Command="{Binding OpenAboutCommand}"/>
             </MenuItem>
           </Menu>

src/ClaudeDo.Ui/Views/MainWindow.axaml.cs

@@ -1,6 +1,9 @@
+using System.Linq;
 using Avalonia.Controls;
 using Avalonia.Input;
 using ClaudeDo.Ui.ViewModels;
+using ClaudeDo.Ui.ViewModels.Islands;
+using ClaudeDo.Ui.ViewModels.Modals;
 using ClaudeDo.Ui.Views.Modals;
 using ClaudeDo.Ui.Views.Planning;
 
@@ -31,6 +34,27 @@ public partial class MainWindow : Window
                 aboutVm.CloseAction = () => { dlg.Close(); tcs.TrySetResult(true); };
                 await dlg.ShowDialog(this);
             };
+            vm.ShowWorktreesOverviewModal = async (modal) =>
+            {
+                var dlg = new WorktreesOverviewModalView { DataContext = modal };
+                modal.CloseAction = () => dlg.Close();
+                modal.JumpToTaskAction = (listId, _) =>
+                {
+                    if (DataContext is IslandsShellViewModel s)
+                    {
+                        var item = s.Lists?.UserLists.FirstOrDefault(l => l.Id == $"user:{listId}");
+                        if (item is not null && s.Lists is not null) s.Lists.SelectedList = item;
+                    }
+                };
+                modal.ShowDiffAction = diffVm =>
+                {
+                    var diffDlg = new WorktreeModalView { DataContext = diffVm };
+                    diffVm.CloseAction = () => diffDlg.Close();
+                    _ = diffVm.LoadAsync();
+                    _ = diffDlg.ShowDialog(this);
+                };
+                await dlg.ShowDialog(this);
+            };
         }
     }
 

src/ClaudeDo.Ui/Views/Modals/WorktreeModalView.axaml

@@ -1,17 +1,24 @@
 <Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:vm="using:ClaudeDo.Ui.ViewModels.Modals"
+        xmlns:converters="using:ClaudeDo.Ui.Converters"
         x:Class="ClaudeDo.Ui.Views.Modals.WorktreeModalView"
         x:DataType="vm:WorktreeModalViewModel"
         Title="Worktree"
-        Width="640" Height="720"
+        Width="1100" Height="720"
+        MinWidth="640" MinHeight="400"
         WindowStartupLocation="CenterOwner"
-        SystemDecorations="None"
+        SystemDecorations="BorderOnly"
         ExtendClientAreaToDecorationsHint="True"
+        ExtendClientAreaTitleBarHeightHint="-1"
         Background="Transparent"
-        CanResize="False"
+        CanResize="True"
         TransparencyLevelHint="AcrylicBlur">
 
+  <Window.Resources>
+    <converters:DiffLineKindToBrushConverter x:Key="DiffLineKindToBrush"/>
+  </Window.Resources>
+
   <Window.KeyBindings>
     <KeyBinding Gesture="Escape" Command="{Binding CloseCommand}"/>
   </Window.KeyBindings>
@@ -39,12 +46,25 @@
                    TextTrimming="CharacterEllipsis"/>
       </Border>
 
-      <!-- File tree -->
+      <!-- Split: file tree | splitter | diff pane -->
-      <TreeView DockPanel.Dock="Top" ItemsSource="{Binding Root}"
+      <Grid ColumnDefinitions="260,4,*">
-                Background="Transparent" Margin="8,0,8,8">
+
+        <!-- Left: file tree -->
+        <TreeView x:Name="FileTree"
+                  Grid.Column="0"
+                  ItemsSource="{Binding Root}"
+                  SelectedItem="{Binding SelectedNode, Mode=TwoWay}"
+                  Background="Transparent"
+                  Margin="8,0,4,8">
+          <TreeView.Styles>
+            <Style Selector="TreeViewItem" x:DataType="vm:WorktreeNodeViewModel">
+              <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}"/>
+            </Style>
+          </TreeView.Styles>
           <TreeView.ItemTemplate>
             <TreeDataTemplate DataType="vm:WorktreeNodeViewModel"
                               ItemsSource="{Binding Children}">
+              <Border Background="Transparent" Tapped="OnNodeTapped" Cursor="Hand">
               <StackPanel Orientation="Horizontal" Spacing="8">
                 <TextBlock Text="{Binding Name}"
                            FontFamily="{DynamicResource MonoFont}" FontSize="12"
@@ -57,10 +77,34 @@
                              Foreground="{DynamicResource TextBrush}"/>
                 </Border>
               </StackPanel>
+              </Border>
             </TreeDataTemplate>
           </TreeView.ItemTemplate>
         </TreeView>
 
+        <!-- Splitter -->
+        <GridSplitter Grid.Column="1" ResizeDirection="Columns" Background="{DynamicResource LineBrush}"/>
+
+        <!-- Right: diff content -->
+        <ScrollViewer Grid.Column="2" Padding="8"
+                      HorizontalScrollBarVisibility="Auto"
+                      VerticalScrollBarVisibility="Auto"
+                      Margin="4,0,8,8">
+          <ItemsControl ItemsSource="{Binding SelectedFileDiffLines}">
+            <ItemsControl.ItemTemplate>
+              <DataTemplate DataType="vm:WorktreeDiffLineViewModel">
+                <SelectableTextBlock Text="{Binding Text}"
+                                     FontFamily="{DynamicResource MonoFont}"
+                                     FontSize="11"
+                                     Foreground="{Binding Kind, Converter={StaticResource DiffLineKindToBrush}}"
+                                     TextWrapping="NoWrap"/>
+              </DataTemplate>
+            </ItemsControl.ItemTemplate>
+          </ItemsControl>
+        </ScrollViewer>
+
+      </Grid>
+
     </DockPanel>
   </Border>
 </Window>

src/ClaudeDo.Ui/Views/Modals/WorktreeModalView.axaml.cs

@@ -5,6 +5,7 @@ using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Media;
 using Avalonia.Styling;
+using Avalonia.VisualTree;
 using ClaudeDo.Ui.ViewModels.Modals;
 
 namespace ClaudeDo.Ui.Views.Modals;
@@ -21,6 +22,18 @@ public partial class WorktreeModalView : Window
         base.OnDataContextChanged(e);
         if (DataContext is WorktreeModalViewModel vm)
             vm.CloseAction = Close;
+
+        // Wire TreeView selection — SelectedItem TwoWay binding may not fire
+        // reliably in Avalonia 12 for TreeView; use SelectionChanged as backup.
+        var tree = this.FindControl<TreeView>("FileTree");
+        if (tree is not null)
+            tree.SelectionChanged += OnFileTreeSelectionChanged;
+    }
+
+    private void OnFileTreeSelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        if (DataContext is WorktreeModalViewModel vm && sender is TreeView tree)
+            vm.SelectedNode = tree.SelectedItem as WorktreeNodeViewModel;
     }
 
     protected override async void OnOpened(EventArgs e)
@@ -44,6 +57,15 @@ public partial class WorktreeModalView : Window
         RenderTransform = new ScaleTransform(1.0, 1.0);
     }
 
+    private void OnNodeTapped(object? sender, Avalonia.Input.TappedEventArgs e)
+    {
+        if (sender is not Control c) return;
+        if (c.DataContext is not WorktreeNodeViewModel node) return;
+        if (!node.IsDirectory) return;
+        node.IsExpanded = !node.IsExpanded;
+        e.Handled = true;
+    }
+
     private void OnTitleBarPressed(object? sender, PointerPressedEventArgs e)
     {
         if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)

src/ClaudeDo.Ui/Views/Modals/WorktreesOverviewModalView.axaml

@@ -0,0 +1,209 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="using:ClaudeDo.Ui.ViewModels.Modals"
+        xmlns:converters="using:ClaudeDo.Ui.Converters"
+        x:Class="ClaudeDo.Ui.Views.Modals.WorktreesOverviewModalView"
+        x:DataType="vm:WorktreesOverviewModalViewModel"
+        Title="{Binding Title}"
+        Width="900" Height="560" MinWidth="640" MinHeight="360"
+        CanResize="True"
+        WindowStartupLocation="CenterOwner"
+        Background="{DynamicResource SurfaceBrush}"
+        SystemDecorations="BorderOnly"
+        ExtendClientAreaToDecorationsHint="True"
+        ExtendClientAreaTitleBarHeightHint="-1">
+
+  <Window.Resources>
+    <converters:WorktreeStateColorConverter x:Key="WorktreeStateColor"/>
+    <DataTemplate x:Key="WorktreeRowTemplate" x:DataType="vm:WorktreeOverviewRowViewModel">
+      <Border Classes="wt-row"
+              Classes.selected="{Binding IsSelected}"
+              Tapped="OnRowTapped">
+        <Border.ContextMenu>
+          <ContextMenu>
+            <MenuItem Header="Show diff"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).ShowDiffCommand}"
+                      CommandParameter="{Binding}"/>
+            <MenuItem Header="Open in Explorer"
+                      IsEnabled="{Binding PathExistsOnDisk}"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).OpenInExplorerCommand}"
+                      CommandParameter="{Binding}"/>
+            <MenuItem Header="Jump to task"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).JumpToTaskCommand}"
+                      CommandParameter="{Binding}"/>
+            <Separator/>
+            <MenuItem Header="Discard"
+                      IsEnabled="{Binding IsActive}"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).DiscardCommand}"
+                      CommandParameter="{Binding}"/>
+            <MenuItem Header="Keep"
+                      IsEnabled="{Binding IsActive}"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).KeepCommand}"
+                      CommandParameter="{Binding}"/>
+            <Separator/>
+            <MenuItem Header="Copy branch"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).CopyBranchCommand}"
+                      CommandParameter="{Binding}"/>
+            <MenuItem Header="Copy path"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).CopyPathCommand}"
+                      CommandParameter="{Binding}"/>
+            <Separator/>
+            <MenuItem Header="Force remove"
+                      Foreground="#EF5350"
+                      Command="{Binding $parent[Window].((vm:WorktreesOverviewModalViewModel)DataContext).ForceRemoveCommand}"
+                      CommandParameter="{Binding}"/>
+          </ContextMenu>
+        </Border.ContextMenu>
+        <Grid ColumnDefinitions="*,90,80,80">
+          <StackPanel Grid.Column="0" Orientation="Vertical" Spacing="2">
+            <TextBlock Text="{Binding TaskTitle}" FontWeight="SemiBold"/>
+            <StackPanel Orientation="Horizontal" Spacing="4">
+              <TextBlock Text="{Binding TaskStatus}" FontSize="10"
+                         Foreground="{DynamicResource TextFaintBrush}"/>
+              <TextBlock Text="•" FontSize="10" Foreground="{DynamicResource TextFaintBrush}"
+                         IsVisible="{Binding !PathExistsOnDisk}"/>
+              <TextBlock Text="phantom" FontSize="10" Foreground="#EF5350"
+                         IsVisible="{Binding !PathExistsOnDisk}"
+                         ToolTip.Tip="Directory missing on disk"/>
+            </StackPanel>
+          </StackPanel>
+          <Border Grid.Column="1" CornerRadius="3" Padding="6,2" VerticalAlignment="Center"
+                  Background="{Binding State, Converter={StaticResource WorktreeStateColor}}">
+            <TextBlock Text="{Binding State}" FontSize="10" Foreground="White"
+                       HorizontalAlignment="Center"/>
+          </Border>
+          <TextBlock Grid.Column="2" Text="{Binding DiffStat}" VerticalAlignment="Center"
+                     FontFamily="{DynamicResource MonoFont}" FontSize="11"
+                     Foreground="{DynamicResource TextDimBrush}"/>
+          <TextBlock Grid.Column="3" Text="{Binding AgeText}" VerticalAlignment="Center"
+                     FontSize="11" Foreground="{DynamicResource TextDimBrush}"/>
+        </Grid>
+      </Border>
+    </DataTemplate>
+  </Window.Resources>
+
+  <Window.Styles>
+    <Style Selector="Border.wt-row">
+      <Setter Property="Padding"         Value="12,10"/>
+      <Setter Property="CornerRadius"    Value="8"/>
+      <Setter Property="Background"      Value="Transparent"/>
+      <Setter Property="BorderBrush"     Value="{DynamicResource LineBrush}"/>
+      <Setter Property="BorderThickness" Value="1"/>
+      <Setter Property="Margin"          Value="0,0,0,6"/>
+      <Setter Property="Cursor"          Value="Hand"/>
+      <Setter Property="Transitions">
+        <Transitions>
+          <BrushTransition Property="BorderBrush" Duration="0:0:0.10"/>
+        </Transitions>
+      </Setter>
+    </Style>
+    <Style Selector="Border.wt-row:pointerover">
+      <Setter Property="BorderBrush" Value="{DynamicResource LineBrightBrush}"/>
+    </Style>
+    <Style Selector="Border.wt-row.selected">
+      <Setter Property="BorderBrush" Value="{DynamicResource LineBrightBrush}"/>
+    </Style>
+  </Window.Styles>
+
+  <Grid RowDefinitions="36,Auto,*,52">
+
+      <!-- Title bar -->
+      <Border Grid.Row="0"
+              Background="{DynamicResource DeepBrush}"
+              BorderBrush="{DynamicResource LineBrush}"
+              BorderThickness="0,0,0,1"
+              PointerPressed="OnTitleBarPressed">
+        <Grid ColumnDefinitions="*,Auto">
+          <TextBlock Grid.Column="0"
+                     Text="{Binding Title}"
+                     VerticalAlignment="Center"
+                     Margin="14,0,0,0"
+                     FontSize="12"
+                     FontWeight="SemiBold"
+                     Foreground="{DynamicResource TextBrush}"/>
+          <Button Grid.Column="1"
+                  Content="✕"
+                  Command="{Binding CloseCommand}"
+                  Margin="0,0,8,0"
+                  Width="28" Height="28"
+                  FontSize="11"
+                  HorizontalContentAlignment="Center"
+                  VerticalContentAlignment="Center"/>
+        </Grid>
+      </Border>
+
+      <!-- Toolbar -->
+      <Border Grid.Row="1"
+              Background="{DynamicResource DeepBrush}"
+              BorderBrush="{DynamicResource LineBrush}"
+              BorderThickness="0,0,0,1"
+              Padding="12,8">
+        <StackPanel Orientation="Horizontal" Spacing="8">
+          <Button Content="Refresh" Command="{Binding RefreshCommand}" IsEnabled="{Binding !IsBusy}"/>
+          <Button Content="Cleanup finished" Command="{Binding CleanupFinishedCommand}" IsEnabled="{Binding !IsBusy}"/>
+          <TextBlock Text="{Binding StatusMessage}" VerticalAlignment="Center" Margin="12,0,0,0"
+                     Foreground="{DynamicResource TextDimBrush}"/>
+        </StackPanel>
+      </Border>
+
+      <!-- Content -->
+      <ScrollViewer Grid.Row="2" Padding="12,8">
+        <StackPanel>
+          <!-- Column headers -->
+          <Grid ColumnDefinitions="*,90,80,80" Margin="12,0,12,4">
+            <TextBlock Grid.Column="0" Text="TASK"
+                       FontFamily="{DynamicResource MonoFont}" FontSize="10" LetterSpacing="1.4"
+                       Foreground="{DynamicResource TextFaintBrush}"/>
+            <TextBlock Grid.Column="1" Text="STATE"
+                       FontFamily="{DynamicResource MonoFont}" FontSize="10" LetterSpacing="1.4"
+                       Foreground="{DynamicResource TextFaintBrush}"/>
+            <TextBlock Grid.Column="2" Text="DIFF"
+                       FontFamily="{DynamicResource MonoFont}" FontSize="10" LetterSpacing="1.4"
+                       Foreground="{DynamicResource TextFaintBrush}"/>
+            <TextBlock Grid.Column="3" Text="AGE"
+                       FontFamily="{DynamicResource MonoFont}" FontSize="10" LetterSpacing="1.4"
+                       Foreground="{DynamicResource TextFaintBrush}"/>
+          </Grid>
+          <Border Height="1" Background="{DynamicResource LineBrush}" Margin="0,0,0,8"/>
+
+          <!-- Rows (per-list) -->
+          <ItemsControl ItemsSource="{Binding Rows}" IsVisible="{Binding !IsGlobal}">
+            <ItemsControl.ItemTemplate>
+              <DataTemplate DataType="vm:WorktreeOverviewRowViewModel">
+                <ContentControl ContentTemplate="{StaticResource WorktreeRowTemplate}" Content="{Binding}"/>
+              </DataTemplate>
+            </ItemsControl.ItemTemplate>
+          </ItemsControl>
+
+          <!-- Rows (global, grouped) -->
+          <ItemsControl ItemsSource="{Binding Groups}" IsVisible="{Binding IsGlobal}">
+            <ItemsControl.ItemTemplate>
+              <DataTemplate DataType="vm:WorktreesGroupViewModel">
+                <Expander Header="{Binding ListName}" IsExpanded="True" Margin="0,0,0,6">
+                  <ItemsControl ItemsSource="{Binding Rows}">
+                    <ItemsControl.ItemTemplate>
+                      <DataTemplate DataType="vm:WorktreeOverviewRowViewModel">
+                        <ContentControl ContentTemplate="{StaticResource WorktreeRowTemplate}" Content="{Binding}"/>
+                      </DataTemplate>
+                    </ItemsControl.ItemTemplate>
+                  </ItemsControl>
+                </Expander>
+              </DataTemplate>
+            </ItemsControl.ItemTemplate>
+          </ItemsControl>
+        </StackPanel>
+      </ScrollViewer>
+
+      <!-- Footer -->
+      <Border Grid.Row="3"
+              Background="{DynamicResource DeepBrush}"
+              BorderBrush="{DynamicResource LineBrush}"
+              BorderThickness="0,1,0,0"
+              Padding="12,10">
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+          <Button Content="Close" Command="{Binding CloseCommand}"/>
+        </StackPanel>
+      </Border>
+
+    </Grid>
+</Window>

src/ClaudeDo.Ui/Views/Modals/WorktreesOverviewModalView.axaml.cs

@@ -0,0 +1,25 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using ClaudeDo.Ui.ViewModels.Modals;
+
+namespace ClaudeDo.Ui.Views.Modals;
+
+public partial class WorktreesOverviewModalView : Window
+{
+    public WorktreesOverviewModalView() => InitializeComponent();
+
+    private void OnRowTapped(object? sender, TappedEventArgs e)
+    {
+        if (sender is Border { DataContext: WorktreeOverviewRowViewModel row } &&
+            DataContext is WorktreesOverviewModalViewModel vm)
+        {
+            vm.SelectRow(row);
+        }
+    }
+
+    private void OnTitleBarPressed(object? sender, PointerPressedEventArgs e)
+    {
+        if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
+            BeginMoveDrag(e);
+    }
+}

src/ClaudeDo.Worker/Hub/WorkerHub.cs

@@ -29,6 +29,22 @@ public record AppSettingsDto(
 
 public record WorktreeCleanupDto(int Removed);
 public record WorktreeResetDto(int Removed, int TasksAffected, bool Blocked, int RunningTasks);
+
+public record WorktreeOverviewDto(
+    string TaskId,
+    string TaskTitle,
+    ClaudeDo.Data.Models.TaskStatus TaskStatus,
+    string ListId,
+    string ListName,
+    string Path,
+    string BranchName,
+    string BaseCommit,
+    WorktreeState State,
+    string? DiffStat,
+    DateTime CreatedAt,
+    bool PathExistsOnDisk);
+
+public record ForceRemoveResultDto(bool Removed, string? Reason);
 public record MergeResultDto(string Status, IReadOnlyList<string> ConflictFiles, string? ErrorMessage);
 public record MergeTargetsDto(string DefaultBranch, IReadOnlyList<string> LocalBranches);
 public record UpdateListDto(string Id, string Name, string? WorkingDir, string DefaultCommitType);
@@ -220,9 +236,9 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
         });
     }
 
-    public async Task<WorktreeCleanupDto> CleanupFinishedWorktrees()
+    public async Task<WorktreeCleanupDto> CleanupFinishedWorktrees(string? listId = null)
     {
-        var result = await _wtMaintenance.CleanupFinishedAsync();
+        var result = await _wtMaintenance.CleanupFinishedAsync(listId, Context.ConnectionAborted);
         return new WorktreeCleanupDto(result.Removed);
     }
 
@@ -232,6 +248,33 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
         return new WorktreeResetDto(result.Removed, result.TasksAffected, result.Blocked, result.RunningTasks);
     }
 
+    public async Task<List<WorktreeOverviewDto>> GetWorktreesOverview(string? listId)
+    {
+        var rows = await _wtMaintenance.GetOverviewAsync(listId, Context.ConnectionAborted);
+        return rows.Select(r => new WorktreeOverviewDto(
+            r.TaskId, r.TaskTitle, r.TaskStatus, r.ListId, r.ListName,
+            r.Path, r.BranchName, r.BaseCommit, r.State, r.DiffStat, r.CreatedAt, r.PathExistsOnDisk)).ToList();
+    }
+
+    public async Task<bool> SetWorktreeState(string taskId, WorktreeState newState)
+    {
+        using var ctx = _dbFactory.CreateDbContext();
+        var repo = new WorktreeRepository(ctx);
+        var existing = await repo.GetByTaskIdAsync(taskId, Context.ConnectionAborted);
+        if (existing is null) throw new HubException("worktree not found");
+        await repo.SetStateAsync(taskId, newState, Context.ConnectionAborted);
+        await _broadcaster.WorktreeUpdated(taskId);
+        return true;
+    }
+
+    public async Task<ForceRemoveResultDto> ForceRemoveWorktree(string taskId)
+    {
+        var result = await _wtMaintenance.ForceRemoveAsync(taskId, Context.ConnectionAborted);
+        if (result.Removed)
+            await _broadcaster.WorktreeUpdated(taskId);
+        return new ForceRemoveResultDto(result.Removed, result.Reason);
+    }
+
     public async Task<MergeResultDto> MergeTask(
         string taskId, string targetBranch, bool removeWorktree, string commitMessage)
     {

src/ClaudeDo.Worker/Worktrees/WorktreeMaintenanceService.cs

@@ -9,6 +9,7 @@ public sealed class WorktreeMaintenanceService
 {
     public sealed record CleanupResult(int Removed);
     public sealed record ResetResult(int Removed, int TasksAffected, bool Blocked, int RunningTasks);
+    public sealed record ForceRemoveResult(bool Removed, string? Reason);
 
     private readonly IDbContextFactory<ClaudeDoDbContext> _dbFactory;
     private readonly GitService _git;
@@ -24,16 +25,19 @@ public sealed class WorktreeMaintenanceService
         _logger = logger;
     }
 
-    public async Task<CleanupResult> CleanupFinishedAsync(CancellationToken ct = default)
+    public async Task<CleanupResult> CleanupFinishedAsync(string? listId = null, CancellationToken ct = default)
     {
         using var context = _dbFactory.CreateDbContext();
-        var rows = await (from w in context.Worktrees
+        var query = from w in context.Worktrees
                     join t in context.Tasks on w.TaskId equals t.Id
                     join l in context.Lists on t.ListId equals l.Id
                     where w.State == WorktreeState.Merged || w.State == WorktreeState.Discarded
-                          select new WorktreeRow(w.TaskId, w.Path, w.BranchName, l.WorkingDir))
+                    select new { Row = new WorktreeRow(w.TaskId, w.Path, w.BranchName, l.WorkingDir), ListId = t.ListId };
-                         .AsNoTracking()
+
-                         .ToListAsync(ct);
+        if (!string.IsNullOrEmpty(listId))
+            query = query.Where(x => x.ListId == listId);
+
+        var rows = await query.AsNoTracking().Select(x => x.Row).ToListAsync(ct);
 
         int removed = 0;
         foreach (var row in rows)
@@ -68,6 +72,53 @@ public sealed class WorktreeMaintenanceService
         return new ResetResult(removed, rows.Count, Blocked: false, RunningTasks: 0);
     }
 
+    public async Task<IReadOnlyList<WorktreeOverviewRow>> GetOverviewAsync(
+        string? listId, CancellationToken ct = default)
+    {
+        using var context = _dbFactory.CreateDbContext();
+        var query = from w in context.Worktrees
+                    join t in context.Tasks on w.TaskId equals t.Id
+                    join l in context.Lists on t.ListId equals l.Id
+                    select new
+                    {
+                        w.TaskId, t.Title, t.Status, ListId = l.Id, ListName = l.Name,
+                        w.Path, w.BranchName, w.BaseCommit, w.State, w.DiffStat, w.CreatedAt,
+                    };
+
+        if (!string.IsNullOrEmpty(listId))
+            query = query.Where(x => x.ListId == listId);
+
+        var rows = await query.AsNoTracking().ToListAsync(ct);
+
+        return rows.Select(x => new WorktreeOverviewRow(
+            x.TaskId, x.Title, x.Status, x.ListId, x.ListName,
+            x.Path, x.BranchName, x.BaseCommit ?? "", x.State, x.DiffStat, x.CreatedAt,
+            PathExistsOnDisk: !string.IsNullOrWhiteSpace(x.Path) && Directory.Exists(x.Path))).ToList();
+    }
+
+    public async Task<ForceRemoveResult> ForceRemoveAsync(string taskId, CancellationToken ct = default)
+    {
+        using var context = _dbFactory.CreateDbContext();
+
+        var row = await (from w in context.Worktrees
+                         join t in context.Tasks on w.TaskId equals t.Id
+                         join l in context.Lists on t.ListId equals l.Id
+                         where w.TaskId == taskId
+                         select new { Row = new WorktreeRow(w.TaskId, w.Path, w.BranchName, l.WorkingDir),
+                                      Status = t.Status })
+                        .AsNoTracking()
+                        .FirstOrDefaultAsync(ct);
+
+        if (row is null)
+            return new ForceRemoveResult(false, "worktree not found");
+
+        if (row.Status == ClaudeDo.Data.Models.TaskStatus.Running)
+            return new ForceRemoveResult(false, "task is currently running");
+
+        var ok = await TryRemoveAsync(row.Row, force: true, ct);
+        return new ForceRemoveResult(ok, ok ? null : "remove failed");
+    }
+
     private async Task<bool> TryRemoveAsync(WorktreeRow row, bool force, CancellationToken ct)
     {
         var repoDirExists = !string.IsNullOrWhiteSpace(row.WorkingDir) && Directory.Exists(row.WorkingDir);

src/ClaudeDo.Worker/Worktrees/WorktreeOverviewRow.cs

@@ -0,0 +1,18 @@
+using ClaudeDo.Data.Models;
+using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
+
+namespace ClaudeDo.Worker.Worktrees;
+
+public sealed record WorktreeOverviewRow(
+    string TaskId,
+    string TaskTitle,
+    TaskStatus TaskStatus,
+    string ListId,
+    string ListName,
+    string Path,
+    string BranchName,
+    string BaseCommit,
+    WorktreeState State,
+    string? DiffStat,
+    DateTime CreatedAt,
+    bool PathExistsOnDisk);

tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs

@@ -200,4 +200,281 @@ public class WorktreeMaintenanceServiceTests : IDisposable
         var remaining = await new WorktreeRepository(checkCtx).GetAllAsync();
         Assert.Empty(remaining);
     }
+
+    [Fact]
+    public async Task CleanupFinished_With_ListId_Only_Removes_That_Lists_Rows()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (listA, taskA) = MakeEntities(repo.RepoDir);
+        var (listB, taskB) = MakeEntities(repo.RepoDir);
+
+        var wtA = await CreateWorktreeAsync(git, repo.RepoDir, taskA.Id);
+        var wtB = await CreateWorktreeAsync(git, repo.RepoDir, taskB.Id);
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(listA);
+            await new ListRepository(ctx).AddAsync(listB);
+            var taskRepo = new TaskRepository(ctx);
+            await taskRepo.AddAsync(taskA);
+            await taskRepo.AddAsync(taskB);
+            var wtRepo = new WorktreeRepository(ctx);
+            await wtRepo.AddAsync(new WorktreeEntity
+            {
+                TaskId = taskA.Id, Path = wtA, BranchName = $"test/{taskA.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Merged, CreatedAt = DateTime.UtcNow,
+            });
+            await wtRepo.AddAsync(new WorktreeEntity
+            {
+                TaskId = taskB.Id, Path = wtB, BranchName = $"test/{taskB.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Merged, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var result = await svc.CleanupFinishedAsync(listA.Id, CancellationToken.None);
+
+        Assert.Equal(1, result.Removed);
+        Assert.False(Directory.Exists(wtA));
+        Assert.True(Directory.Exists(wtB));
+
+        using var checkCtx = db.CreateContext();
+        var remaining = await new WorktreeRepository(checkCtx).GetAllAsync();
+        Assert.Single(remaining);
+        Assert.Equal(taskB.Id, remaining[0].TaskId);
+    }
+
+    [Fact]
+    public async Task GetOverview_Returns_All_When_ListId_Null()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (listA, taskA) = MakeEntities(repo.RepoDir);
+        var (listB, taskB) = MakeEntities(repo.RepoDir);
+        var wtA = await CreateWorktreeAsync(git, repo.RepoDir, taskA.Id);
+        var wtB = await CreateWorktreeAsync(git, repo.RepoDir, taskB.Id);
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(listA);
+            await new ListRepository(ctx).AddAsync(listB);
+            await new TaskRepository(ctx).AddAsync(taskA);
+            await new TaskRepository(ctx).AddAsync(taskB);
+            var wtRepo = new WorktreeRepository(ctx);
+            await wtRepo.AddAsync(new WorktreeEntity
+            {
+                TaskId = taskA.Id, Path = wtA, BranchName = $"test/{taskA.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+            await wtRepo.AddAsync(new WorktreeEntity
+            {
+                TaskId = taskB.Id, Path = wtB, BranchName = $"test/{taskB.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Merged, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var rows = await svc.GetOverviewAsync(null, CancellationToken.None);
+
+        Assert.Equal(2, rows.Count);
+        Assert.Contains(rows, r => r.TaskId == taskA.Id && r.PathExistsOnDisk);
+        Assert.Contains(rows, r => r.TaskId == taskB.Id && r.PathExistsOnDisk);
+    }
+
+    [Fact]
+    public async Task GetOverview_Filters_By_ListId()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (listA, taskA) = MakeEntities(repo.RepoDir);
+        var (listB, taskB) = MakeEntities(repo.RepoDir);
+        var wtA = await CreateWorktreeAsync(git, repo.RepoDir, taskA.Id);
+        var wtB = await CreateWorktreeAsync(git, repo.RepoDir, taskB.Id);
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(listA);
+            await new ListRepository(ctx).AddAsync(listB);
+            await new TaskRepository(ctx).AddAsync(taskA);
+            await new TaskRepository(ctx).AddAsync(taskB);
+            var wtRepo = new WorktreeRepository(ctx);
+            await wtRepo.AddAsync(new WorktreeEntity
+            {
+                TaskId = taskA.Id, Path = wtA, BranchName = $"test/{taskA.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+            await wtRepo.AddAsync(new WorktreeEntity
+            {
+                TaskId = taskB.Id, Path = wtB, BranchName = $"test/{taskB.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var rows = await svc.GetOverviewAsync(listA.Id, CancellationToken.None);
+
+        Assert.Single(rows);
+        Assert.Equal(taskA.Id, rows[0].TaskId);
+    }
+
+    [Fact]
+    public async Task GetOverview_Flags_PathExistsOnDisk_False_For_Phantom_Row()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (list, task) = MakeEntities(repo.RepoDir);
+        var wt = await CreateWorktreeAsync(git, repo.RepoDir, task.Id);
+
+        try { await git.WorktreeRemoveAsync(repo.RepoDir, wt, force: true); } catch { }
+        if (Directory.Exists(wt)) Directory.Delete(wt, recursive: true);
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(list);
+            await new TaskRepository(ctx).AddAsync(task);
+            await new WorktreeRepository(ctx).AddAsync(new WorktreeEntity
+            {
+                TaskId = task.Id, Path = wt, BranchName = $"test/{task.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var rows = await svc.GetOverviewAsync(null, CancellationToken.None);
+
+        Assert.Single(rows);
+        Assert.False(rows[0].PathExistsOnDisk);
+    }
+
+    [Fact]
+    public async Task ForceRemove_Removes_Active_Worktree()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (list, task) = MakeEntities(repo.RepoDir, status: ClaudeDo.Data.Models.TaskStatus.Done);
+        var wt = await CreateWorktreeAsync(git, repo.RepoDir, task.Id);
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(list);
+            await new TaskRepository(ctx).AddAsync(task);
+            await new WorktreeRepository(ctx).AddAsync(new WorktreeEntity
+            {
+                TaskId = task.Id, Path = wt, BranchName = $"test/{task.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var result = await svc.ForceRemoveAsync(task.Id, CancellationToken.None);
+
+        Assert.True(result.Removed);
+        Assert.Null(result.Reason);
+        Assert.False(Directory.Exists(wt));
+
+        using var checkCtx = db.CreateContext();
+        var remaining = await new WorktreeRepository(checkCtx).GetAllAsync();
+        Assert.Empty(remaining);
+    }
+
+    [Fact]
+    public async Task ForceRemove_Blocked_When_Task_Running()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (list, task) = MakeEntities(repo.RepoDir, status: ClaudeDo.Data.Models.TaskStatus.Running);
+        var wt = await CreateWorktreeAsync(git, repo.RepoDir, task.Id);
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(list);
+            await new TaskRepository(ctx).AddAsync(task);
+            await new WorktreeRepository(ctx).AddAsync(new WorktreeEntity
+            {
+                TaskId = task.Id, Path = wt, BranchName = $"test/{task.Id}",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var result = await svc.ForceRemoveAsync(task.Id, CancellationToken.None);
+
+        Assert.False(result.Removed);
+        Assert.Equal("task is currently running", result.Reason);
+        Assert.True(Directory.Exists(wt));
+
+        try { await git.WorktreeRemoveAsync(repo.RepoDir, wt, force: true); } catch { }
+    }
+
+    [Fact]
+    public async Task ForceRemove_Removes_Phantom_Row()
+    {
+        if (!GitAvailable) { Assert.True(true, "git not available -- skipping"); return; }
+
+        var repo = NewRepo();
+        var git = new GitService();
+        var db = NewDb();
+
+        var (list, task) = MakeEntities(repo.RepoDir);
+        var phantomPath = Path.Combine(Path.GetTempPath(), $"wt_phantom_{Guid.NewGuid():N}");
+
+        using (var ctx = db.CreateContext())
+        {
+            await new ListRepository(ctx).AddAsync(list);
+            await new TaskRepository(ctx).AddAsync(task);
+            await new WorktreeRepository(ctx).AddAsync(new WorktreeEntity
+            {
+                TaskId = task.Id, Path = phantomPath, BranchName = $"test/{task.Id}-phantom",
+                BaseCommit = repo.BaseCommit, State = WorktreeState.Active, CreatedAt = DateTime.UtcNow,
+            });
+        }
+
+        var svc = new WorktreeMaintenanceService(
+            db.CreateFactory(), git, NullLogger<WorktreeMaintenanceService>.Instance);
+
+        var result = await svc.ForceRemoveAsync(task.Id, CancellationToken.None);
+
+        Assert.True(result.Removed);
+
+        using var checkCtx = db.CreateContext();
+        var remaining = await new WorktreeRepository(checkCtx).GetAllAsync();
+        Assert.Empty(remaining);
+    }
 }