perf(ui): show list settings modal before its seven-round-trip load finishes

OpenListSettingsAsync/CreateListAsync used to await LoadAsync (name/agent
config/list_config x2/ticket settings/ticket projects, all serial) before
showing the window -- an unreachable ticket system alone could add a 10s
HTTP timeout to every open. LoadAsync now runs via BeginLoad (fire-and-forget,
mirrors UsageMonitorModalViewModel), the modal shows immediately and fields
fill in behind it.

GetListConfigAsync no longer runs twice per open -- AgentConfigEditorViewModel
exposes the row it already fetched (LastLoadedListConfig) instead of the
caller re-fetching it. Ticket-project loading is split into its own
fire-and-forget step so a slow/unreachable ticket system can't block the
rest of the fields, and its tri-state Save logic now also treats "never
finished loading" like "not available" -- leaving the stored
TicketProjectId link untouched instead of overwriting it with 0. Save/Delete
are gated (CanExecute) on the core load being done, so a save can't land
before the fields it writes are populated.

Not measured with OperationTiming against a live worker in this session (no
running app instance available) -- verified instead via 4 new unit tests
that assert GetListConfigAsync fires exactly once and that a hung/failing
ticket-projects call neither blocks LoadAsync's other fields nor corrupts
the saved TicketProjectId. Before/after OperationTiming numbers and a visual
pass are still open follow-ups.

src/ClaudeDo.Ui/ViewModels/Agent/AgentConfigEditorViewModel.cs

@@ -236,6 +236,10 @@ public sealed partial class AgentConfigEditorViewModel : ViewModelBase, IDisposa
         return names.Count == 0 ? null : names;
     }
 
+    // The list_config row fetched by the most recent LoadForListAsync — exposed so a caller that
+    // needs the same row (ListSettingsModalViewModel) can reuse it instead of fetching it again.
+    public ListConfigDto? LastLoadedListConfig { get; private set; }
+
     public async System.Threading.Tasks.Task LoadForListAsync(string listId, CancellationToken ct = default)
     {
         _suppressSave = true;
@@ -246,6 +250,7 @@ public sealed partial class AgentConfigEditorViewModel : ViewModelBase, IDisposa
             await LoadGlobalDefaultsAsync();
 
             var cfg = await _worker.GetListConfigAsync(listId);
+            LastLoadedListConfig = cfg;
             ApplyConfig(cfg?.Model, cfg?.MaxTurns, cfg?.SystemPrompt, cfg?.AgentPath, cfg?.PermissionMode);
             await ReloadSessionSkillsAsync(cfg?.SessionSkills);
 

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

@@ -58,7 +58,7 @@ 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, row.IsManual, row.FindingsTracked, row.IconKey);
+        vm.BeginLoad(rawId, row.Name, row.WorkingDir, row.DefaultCommitType, row.IsManual, row.FindingsTracked, row.IconKey);
         await Dialogs.ShowListSettingsAsync(vm);
         if (vm.Deleted) await LoadAsync();
         else await RefreshRowAsync(row.Id);
@@ -408,7 +408,7 @@ 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, entity.IsManual, entity.FindingsTracked, entity.Icon);
+            vm.BeginLoad(entity.Id, entity.Name, entity.WorkingDir, entity.DefaultCommitType, entity.IsManual, entity.FindingsTracked, entity.Icon);
             await Dialogs.ShowListSettingsAsync(vm);
             if (!vm.Saved && !vm.Deleted)
             {

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

@@ -56,6 +56,20 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
     [ObservableProperty] private TicketProjectOption? _selectedTicketProject;
     public ObservableCollection<TicketProjectOption> TicketProjects { get; } = new();
 
+    // Gates Save/Delete while the core fields (name/agent/verify command) are still loading, so a
+    // save can't land before they're populated and clobber the list_config row with blanks. Ticket
+    // projects load separately (see LoadTicketProjectsAsync) and are NOT covered by this — Save's
+    // own tri-state handles that case instead.
+    [ObservableProperty]
+    [NotifyCanExecuteChangedFor(nameof(SaveCommand))]
+    [NotifyCanExecuteChangedFor(nameof(DeleteCommand))]
+    private bool _isLoading;
+
+    // True once GetTicketProjectsAsync has completed successfully for the current load — Save
+    // only writes an explicit TicketProjectId when this is true, so a slow/unreachable ticket
+    // system leaves the stored link untouched instead of wiping it to "none".
+    private bool _ticketProjectsLoaded;
+
     public ObservableCollection<string> CommitTypeOptions { get; } = new(CommitTypeRegistry.Types);
 
     public const string DefaultIcon = "Folder";
@@ -91,6 +105,19 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
         Agent = new AgentConfigEditorViewModel(worker, AgentConfigScope.List);
     }
 
+    // Fires the load without blocking the caller, so the modal window can be shown right away
+    // instead of appearing only after seven serial hub round-trips (one of them a 10s-timeout
+    // ticket-system HTTP call) have finished — same pattern as UsageMonitorModalViewModel.BeginLoad.
+    public void BeginLoad(
+        string listId,
+        string name,
+        string? workingDir,
+        string defaultCommitType,
+        bool isManual = false,
+        bool findingsTracked = false,
+        string? icon = null)
+        => _ = LoadAsync(listId, name, workingDir, defaultCommitType, isManual, findingsTracked, icon);
+
     public async Task LoadAsync(
         string listId,
         string name,
@@ -100,6 +127,10 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
         bool findingsTracked = false,
         string? icon = null,
         CancellationToken ct = default)
+    {
+        ListConfigDto? cfg;
+        IsLoading = true;
+        try
         {
             ListId = listId;
             Name = name;
@@ -112,32 +143,54 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
             DefaultCommitType = string.IsNullOrWhiteSpace(defaultCommitType) ? CommitTypeRegistry.DefaultType : defaultCommitType;
 
             await Agent.LoadForListAsync(listId, ct);
-        var cfg = await _worker.GetListConfigAsync(listId);
+            cfg = Agent.LastLoadedListConfig;
             VerifyCommand = cfg?.VerifyCommand ?? "";
             PowerUseAllowed = cfg?.PowerUseAllowed ?? false;
+        }
+        finally { IsLoading = false; }
 
+        // Deliberately NOT awaited: an unreachable ticket system (10s HTTP timeout) must not hold
+        // up the rest of the modal. The dropdown just stays empty until this finishes.
+        _ = LoadTicketProjectsAsync(cfg?.TicketProjectId);
+    }
+
+    private async Task LoadTicketProjectsAsync(int? existingTicketProjectId)
+    {
+        _ticketProjectsLoaded = false;
+        TicketProjects.Clear();
+        try
+        {
             var ticketSettings = TicketSettingsTabViewModel.FeatureEnabled
                 ? await _worker.GetTicketSettingsAsync()
                 : null;
             TicketsAvailable = !string.IsNullOrWhiteSpace(ticketSettings?.ApiBaseUrl);
-        TicketProjects.Clear();
+            if (!TicketsAvailable)
-        if (TicketsAvailable)
             {
+                SelectedTicketProject = null;
+                return;
+            }
+
             TicketProjects.Add(new TicketProjectOption(0, Loc.T("vm.listSettings.ticketProjectNone")));
             foreach (var p in await _worker.GetTicketProjectsAsync())
                 TicketProjects.Add(new TicketProjectOption(p.Id, $"{p.DepartmentName} / {p.Title}"));
 
-            SelectedTicketProject = cfg?.TicketProjectId is int id
+            SelectedTicketProject = existingTicketProjectId is int id
                 ? TicketProjects.FirstOrDefault(t => t.Id == id) ?? TicketProjects[0]
                 : TicketProjects[0];
+            _ticketProjectsLoaded = true;
         }
-        else
+        catch (Exception)
         {
-            SelectedTicketProject = null;
+            // Ticket system unreachable/slow — leave the dropdown as-is. Save's tri-state (below)
+            // skips writing TicketProjectId when _ticketProjectsLoaded is false, so the stored
+            // link survives instead of being wiped to "none".
         }
     }
 
-    [RelayCommand]
+    private bool CanSave() => !IsLoading;
+    private bool CanDelete() => !IsLoading;
+
+    [RelayCommand(CanExecute = nameof(CanSave))]
     private async Task SaveAsync()
     {
         await _worker.UpdateListAsync(new UpdateListDto(
@@ -149,10 +202,11 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
             FindingsTracked,
             Icon));
 
-        // Tri-state: dropdown never shown (no base URL) -> null, leave the stored link alone.
+        // Tri-state: dropdown never shown (no base URL), or ticket projects failed/never loaded
-        // Dropdown shown -> always an explicit value, 0 for "— none —" to actively clear it.
+        // (e.g. an unreachable ticket system) -> null, leave the stored link alone. Dropdown shown
-        // Never null here, or an explicit unlink would silently fail to reach the worker.
+        // and loaded -> always an explicit value, 0 for "— none —" to actively clear it. Never
-        var ticketProjectId = TicketsAvailable ? (SelectedTicketProject?.Id ?? 0) : (int?)null;
+        // null in that case, or an explicit unlink would silently fail to reach the worker.
+        var ticketProjectId = TicketsAvailable && _ticketProjectsLoaded ? (SelectedTicketProject?.Id ?? 0) : (int?)null;
 
         // Always explicit (never null) — this modal owns the checkbox, so unchecking it has to reach
         // the worker as a real false rather than a "leave it alone".
@@ -165,7 +219,7 @@ public sealed partial class ListSettingsModalViewModel : ViewModelBase
         CloseAction?.Invoke();
     }
 
-    [RelayCommand]
+    [RelayCommand(CanExecute = nameof(CanDelete))]
     private async Task DeleteAsync()
     {
         var displayName = string.IsNullOrWhiteSpace(Name) ? Loc.T("vm.listSettings.untitled") : Name;

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

@@ -0,0 +1,128 @@
+using ClaudeDo.Data;
+using ClaudeDo.Localization;
+using ClaudeDo.Ui.Localization;
+using ClaudeDo.Ui.ViewModels.Modals;
+using Microsoft.EntityFrameworkCore;
+
+namespace ClaudeDo.Ui.Tests.ViewModels;
+
+// Perf fix: the modal used to await seven serial hub round-trips (including a 10s-timeout
+// ticket-system HTTP call) before showing itself. LoadAsync must fetch the list config exactly
+// once and must never let a slow/failing ticket-projects call block or corrupt the rest of the
+// load, or the save that follows it.
+public class ListSettingsModalViewModelTests
+{
+    static ListSettingsModalViewModelTests()
+    {
+        var dir = AppContext.BaseDirectory;
+        while (dir is not null && !Directory.Exists(Path.Combine(dir, "src", "ClaudeDo.Localization", "locales")))
+            dir = Path.GetDirectoryName(dir);
+        Loc.Current = new Localizer(
+            LocaleStore.Load(Path.Combine(dir!, "src", "ClaudeDo.Localization", "locales")), "en");
+    }
+
+    private static IDbContextFactory<ClaudeDoDbContext> NewFactory()
+    {
+        var dbPath = Path.Combine(Path.GetTempPath(), $"claudedo_listsettings_{Guid.NewGuid():N}.db");
+        ClaudeDoDbContext New() => new(new DbContextOptionsBuilder<ClaudeDoDbContext>()
+            .UseSqlite($"Data Source={dbPath}").Options);
+        using (var ctx = New()) ctx.Database.EnsureCreated();
+        return new TestDbFactory(New);
+    }
+
+    private sealed class CountingWorker : StubWorkerClient
+    {
+        public int GetListConfigCalls;
+        public ListConfigDto? Cfg;
+        public TicketSettingsDto? TicketSettings = new("http://ticket.example", true);
+        public Func<Task<List<TicketProjectDto>>>? TicketProjectsFactory;
+        public UpdateListConfigDto? SavedListConfig;
+
+        public override Task<ListConfigDto?> GetListConfigAsync(string listId)
+        {
+            GetListConfigCalls++;
+            return Task.FromResult(Cfg);
+        }
+
+        public override Task<TicketSettingsDto?> GetTicketSettingsAsync() => Task.FromResult(TicketSettings);
+
+        public override Task<List<TicketProjectDto>> GetTicketProjectsAsync() =>
+            TicketProjectsFactory?.Invoke() ?? Task.FromResult(new List<TicketProjectDto>());
+
+        public override Task UpdateListConfigAsync(UpdateListConfigDto dto)
+        {
+            SavedListConfig = dto;
+            return Task.CompletedTask;
+        }
+    }
+
+    [Fact]
+    public async Task LoadAsync_CallsGetListConfig_ExactlyOnce()
+    {
+        var worker = new CountingWorker { Cfg = new ListConfigDto("opus", null, null) };
+        var vm = new ListSettingsModalViewModel(worker, NewFactory());
+
+        await vm.LoadAsync("l1", "List One", "/repo", "feat");
+
+        Assert.Equal(1, worker.GetListConfigCalls);
+    }
+
+    [Fact]
+    public async Task LoadAsync_TicketProjectsNeverResolving_DoesNotBlockRestOfLoad()
+    {
+        var pending = new TaskCompletionSource<List<TicketProjectDto>>();
+        var worker = new CountingWorker
+        {
+            Cfg = new ListConfigDto("opus", null, null, 42, null, "make test", "acceptEdits", 7, true),
+            TicketProjectsFactory = () => pending.Task,
+        };
+        var vm = new ListSettingsModalViewModel(worker, NewFactory());
+
+        // LoadAsync must complete on its own even though the ticket-projects call it kicked off
+        // never resolves -- ticket loading is fire-and-forget precisely so a slow/unreachable
+        // ticket system can't hold up the rest of the modal.
+        var loadTask = vm.LoadAsync("l1", "List One", "/repo", "feat");
+        var completed = await Task.WhenAny(loadTask, Task.Delay(TimeSpan.FromSeconds(2)));
+
+        Assert.Same(loadTask, completed);
+        Assert.Equal("make test", vm.VerifyCommand);
+        Assert.True(vm.PowerUseAllowed);
+        Assert.False(vm.IsLoading);
+    }
+
+    [Fact]
+    public async Task Save_WhileTicketProjectsUnreachable_PreservesStoredTicketLink()
+    {
+        var worker = new CountingWorker
+        {
+            Cfg = new ListConfigDto("opus", null, null, null, null, null, null, 7, false),
+            TicketProjectsFactory = () => throw new InvalidOperationException("ticket system unreachable"),
+        };
+        var vm = new ListSettingsModalViewModel(worker, NewFactory());
+
+        await vm.LoadAsync("l1", "List One", "/repo", "feat");
+        await vm.SaveCommand.ExecuteAsync(null);
+
+        Assert.NotNull(worker.SavedListConfig);
+        Assert.Null(worker.SavedListConfig!.TicketProjectId);
+    }
+
+    [Fact]
+    public async Task Save_AfterSuccessfulTicketLoad_WritesSelectedTicketProject()
+    {
+        var worker = new CountingWorker
+        {
+            Cfg = new ListConfigDto("opus", null, null, null, null, null, null, 7, false),
+            TicketProjectsFactory = () => Task.FromResult(new List<TicketProjectDto>
+            {
+                new(7, "Fix the thing", "Dev"),
+            }),
+        };
+        var vm = new ListSettingsModalViewModel(worker, NewFactory());
+
+        await vm.LoadAsync("l1", "List One", "/repo", "feat");
+        await vm.SaveCommand.ExecuteAsync(null);
+
+        Assert.Equal(7, worker.SavedListConfig!.TicketProjectId);
+    }
+}