feat(tasks): mark tasks and lists as manual

Reminders written down as todos had no home: every task looked like Claude work.
A manual task now shows a MANUAL badge and hides send-to-queue, refine and the
planning session; the queue picker, daily prep and the list handler all skip it,
with a TaskStateService guard so the MCP surface and hub cannot start one either.
Opening a hand-driven ConPTY session stays available on purpose.

A list can be marked manual in its settings, which makes tasks created there
(UI and MCP add_task) start out manual. Toggle per task from its context menu.

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

@@ -47,7 +47,7 @@ public sealed partial class ListsIslandViewModel : ViewModelBase, IDisposable
         if (row is null || Dialogs is null || _services is null) return;
         var rawId = row.Id.StartsWith("user:", StringComparison.Ordinal) ? row.Id["user:".Length..] : row.Id;
         var vm = _services.GetRequiredService<ListSettingsModalViewModel>();
-        await vm.LoadAsync(rawId, row.Name, row.WorkingDir, row.DefaultCommitType);
+        await vm.LoadAsync(rawId, row.Name, row.WorkingDir, row.DefaultCommitType, row.IsManual);
         await Dialogs.ShowListSettingsAsync(vm);
         if (vm.Deleted) await LoadAsync();
         else await RefreshRowAsync(row.Id);
@@ -243,6 +243,7 @@ public sealed partial class ListsIslandViewModel : ViewModelBase, IDisposable
                 DotColorKey = dotColors[idx % dotColors.Length],
                 WorkingDir = l.WorkingDir,
                 DefaultCommitType = l.DefaultCommitType,
+                IsManual = l.IsManual,
             };
             Items.Add(item);
             UserLists.Add(item);
@@ -317,7 +318,7 @@ public sealed partial class ListsIslandViewModel : ViewModelBase, IDisposable
         if (Dialogs is not null && _services is not null)
         {
             var vm = _services.GetRequiredService<ListSettingsModalViewModel>();
-            await vm.LoadAsync(entity.Id, entity.Name, entity.WorkingDir, entity.DefaultCommitType);
+            await vm.LoadAsync(entity.Id, entity.Name, entity.WorkingDir, entity.DefaultCommitType, entity.IsManual);
             await Dialogs.ShowListSettingsAsync(vm);
             if (vm.Deleted) await LoadAsync();
             else await RefreshRowAsync(item.Id);
@@ -397,6 +398,7 @@ public sealed partial class ListsIslandViewModel : ViewModelBase, IDisposable
             row.Name = entity.Name;
             row.WorkingDir = entity.WorkingDir;
             row.DefaultCommitType = entity.DefaultCommitType;
+            row.IsManual = entity.IsManual;
         }
         catch { /* best-effort refresh */ }
     }