fix(ui): close interactive-session gate bypasses in reset-and-retry and plan queueing

Reset & Retry discarded the branch and queued an autonomous run even while the
user had an interactive ConPTY pane open on the task, and finalizing a plan
queued every child unconditionally (the hub has no notion of a UI-hosted
session) — both bypassed the HasInteractiveSession gate added for
CanSendToQueue. CanResetAndRetry now checks it too, with a subscription on the
bound task so the command re-evaluates when the flag flips without Task
itself changing; SendToQueueAsync now blocks queuing the whole plan and
surfaces the affected child titles when any child has an open session.

tests/ClaudeDo.Ui.Tests/ViewModels/DetailsIslandResetAndRetryTests.cs

@@ -0,0 +1,136 @@
+using ClaudeDo.Data;
+using ClaudeDo.Data.Models;
+using ClaudeDo.Ui.Services;
+using ClaudeDo.Ui.ViewModels.Islands;
+using Microsoft.EntityFrameworkCore;
+using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
+
+namespace ClaudeDo.Ui.Tests.ViewModels;
+
+// Covers the Reset & Retry gate: it discards the branch/uncommitted work and queues an
+// autonomous run into the same worktree, so it must stay off while an interactive ConPTY
+// pane is open on the task (mirrors TaskRowViewModel.CanSendToQueue's HasInteractiveSession gate).
+public class DetailsIslandResetAndRetryTests : IDisposable
+{
+    private readonly string _dbPath;
+
+    public DetailsIslandResetAndRetryTests()
+    {
+        _dbPath = Path.Combine(Path.GetTempPath(), $"claudedo_reset_retry_test_{Guid.NewGuid():N}.db");
+        using var ctx = NewContext();
+        ctx.Database.EnsureCreated();
+    }
+
+    public void Dispose()
+    {
+        try { File.Delete(_dbPath); } catch { }
+        try { File.Delete(_dbPath + "-wal"); } catch { }
+        try { File.Delete(_dbPath + "-shm"); } catch { }
+    }
+
+    private ClaudeDoDbContext NewContext()
+    {
+        var opts = new DbContextOptionsBuilder<ClaudeDoDbContext>()
+            .UseSqlite($"Data Source={_dbPath}")
+            .Options;
+        return new ClaudeDoDbContext(opts);
+    }
+
+    private sealed class TestDbFactory : IDbContextFactory<ClaudeDoDbContext>
+    {
+        private readonly Func<ClaudeDoDbContext> _create;
+        public TestDbFactory(Func<ClaudeDoDbContext> create) => _create = create;
+        public ClaudeDoDbContext CreateDbContext() => _create();
+    }
+
+    private sealed class NullServiceProvider : IServiceProvider
+    {
+        public object? GetService(Type serviceType) => null;
+    }
+
+    private sealed class StubNotesApi : ClaudeDo.Ui.Services.Interfaces.INotesApi
+    {
+        public Task<List<DailyNoteDto>> ListAsync(DateOnly day) =>
+            Task.FromResult(new List<DailyNoteDto>());
+        public Task<DailyNoteDto?> AddAsync(DateOnly day, string text) =>
+            Task.FromResult<DailyNoteDto?>(null);
+        public Task UpdateAsync(string id, string text) => Task.CompletedTask;
+        public Task DeleteAsync(string id) => Task.CompletedTask;
+    }
+
+    private sealed class RecordingWorkerClient : StubWorkerClient
+    {
+        public override bool IsConnected => true;
+    }
+
+    private DetailsIslandViewModel BuildVm(StubWorkerClient worker)
+    {
+        var factory = new TestDbFactory(NewContext);
+        return new DetailsIslandViewModel(
+            factory, worker, new NullServiceProvider(), new StubNotesApi(), new ClaudeDo.Ui.Services.MergeCoordinator());
+    }
+
+    [Fact]
+    public void ResetAndRetry_IsDisabled_WhileTaskHasInteractiveSession()
+    {
+        var vm = BuildVm(new RecordingWorkerClient());
+        var row = new TaskRowViewModel { Id = "task-reset-1", Status = TaskStatus.Failed, HasInteractiveSession = true };
+        vm.Bind(row);
+        vm.Monitor.ApplyState(TaskStatus.Failed);
+
+        Assert.True(vm.ShowResetAndRetry);
+        Assert.False(vm.ResetAndRetryCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public void ResetAndRetry_ReEnables_WhenInteractiveSessionCloses()
+    {
+        var vm = BuildVm(new RecordingWorkerClient());
+        var row = new TaskRowViewModel { Id = "task-reset-2", Status = TaskStatus.Failed, HasInteractiveSession = true };
+        vm.Bind(row);
+        vm.Monitor.ApplyState(TaskStatus.Failed);
+
+        Assert.False(vm.ResetAndRetryCommand.CanExecute(null));
+
+        var canExecuteChangedRaised = false;
+        vm.ResetAndRetryCommand.CanExecuteChanged += (_, _) => canExecuteChangedRaised = true;
+
+        // The row is the same instance Mission Control flips when a ConPTY pane closes —
+        // the command's CanExecute must react without the bound Task itself changing.
+        row.HasInteractiveSession = false;
+
+        Assert.True(canExecuteChangedRaised);
+        Assert.True(vm.ResetAndRetryCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public void ResetAndRetry_IsEnabled_ForTerminalTaskWithoutInteractiveSession()
+    {
+        var vm = BuildVm(new RecordingWorkerClient());
+        var row = new TaskRowViewModel { Id = "task-reset-3", Status = TaskStatus.Cancelled };
+        vm.Bind(row);
+        vm.Monitor.ApplyState(TaskStatus.Cancelled);
+
+        Assert.True(vm.ResetAndRetryCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public void ResetAndRetry_StaysDisabled_AfterSwitchingToAnotherInteractiveTask()
+    {
+        var vm = BuildVm(new RecordingWorkerClient());
+        var firstRow = new TaskRowViewModel { Id = "task-reset-4", Status = TaskStatus.Failed };
+        vm.Bind(firstRow);
+        vm.Monitor.ApplyState(TaskStatus.Failed);
+        Assert.True(vm.ResetAndRetryCommand.CanExecute(null));
+
+        var secondRow = new TaskRowViewModel { Id = "task-reset-5", Status = TaskStatus.Failed, HasInteractiveSession = true };
+        vm.Bind(secondRow);
+        vm.Monitor.ApplyState(TaskStatus.Failed);
+
+        Assert.False(vm.ResetAndRetryCommand.CanExecute(null));
+
+        // Flipping the old (unsubscribed) row must not resurrect the command for the new task.
+        firstRow.HasInteractiveSession = true;
+        Assert.False(vm.ResetAndRetryCommand.CanExecute(null));
+    }
+}