diff --git a/src/ClaudeDo.Worker/Worktrees/WorktreeMaintenanceService.cs b/src/ClaudeDo.Worker/Worktrees/WorktreeMaintenanceService.cs
index ee4ddde..69c4569 100644
--- a/src/ClaudeDo.Worker/Worktrees/WorktreeMaintenanceService.cs
+++ b/src/ClaudeDo.Worker/Worktrees/WorktreeMaintenanceService.cs
@@ -71,6 +71,30 @@ 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.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.State, x.DiffStat, x.CreatedAt,
+            PathExistsOnDisk: !string.IsNullOrWhiteSpace(x.Path) && Directory.Exists(x.Path))).ToList();
+    }
+
     private async Task<bool> TryRemoveAsync(WorktreeRow row, bool force, CancellationToken ct)
     {
         var repoDirExists = !string.IsNullOrWhiteSpace(row.WorkingDir) && Directory.Exists(row.WorkingDir);
diff --git a/src/ClaudeDo.Worker/Worktrees/WorktreeOverviewRow.cs b/src/ClaudeDo.Worker/Worktrees/WorktreeOverviewRow.cs
new file mode 100644
index 0000000..da46ca6
--- /dev/null
+++ b/src/ClaudeDo.Worker/Worktrees/WorktreeOverviewRow.cs
@@ -0,0 +1,17 @@
+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,
+    WorktreeState State,
+    string? DiffStat,
+    DateTime CreatedAt,
+    bool PathExistsOnDisk);
diff --git a/tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs b/tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs
index 3a4a8b7..9ff6b1d 100644
--- a/tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs
+++ b/tests/ClaudeDo.Worker.Tests/Services/WorktreeMaintenanceServiceTests.cs
@@ -250,4 +250,124 @@ public class WorktreeMaintenanceServiceTests : IDisposable
         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);
+    }
 }