feat(hub): Azure DevOps PAT settings and connection test

src/ClaudeDo.Ui/Services/Interfaces/IWorkerClient.cs

@@ -252,6 +252,10 @@ public interface IWorkerClient : INotifyPropertyChanged
     Task SetTicketTokenAsync(string token);
     Task ClearTicketTokenAsync();
     Task<TicketConnectionDto?> TestTicketConnectionAsync();
+    Task<AzureDevOpsSettingsDto?> GetAzureDevOpsSettingsAsync();
+    Task SetAzureDevOpsTokenAsync(string token);
+    Task ClearAzureDevOpsTokenAsync();
+    Task<AzureDevOpsConnectionDto?> TestAzureDevOpsConnectionAsync();
     Task<List<TicketProjectDto>> GetTicketProjectsAsync();
     /// <summary>Imports open tickets assigned to the token owner into the given list. Throws
     /// HubException (with a user-readable message) on failure so the caller can surface it via

src/ClaudeDo.Ui/Services/WorkerClient.cs

@@ -776,6 +776,18 @@ public partial class WorkerClient : ObservableObject, IAsyncDisposable, IWorkerC
     public Task<TicketConnectionDto?> TestTicketConnectionAsync()
         => TryInvokeAsync<TicketConnectionDto>("TestTicketConnection");
 
+    public Task<AzureDevOpsSettingsDto?> GetAzureDevOpsSettingsAsync()
+        => TryInvokeAsync<AzureDevOpsSettingsDto>("GetAzureDevOpsSettings");
+
+    public Task SetAzureDevOpsTokenAsync(string token)
+        => InvokeTimedAsync("SetAzureDevOpsToken", () => _hub.InvokeAsync("SetAzureDevOpsToken", token));
+
+    public Task ClearAzureDevOpsTokenAsync()
+        => InvokeTimedAsync("ClearAzureDevOpsToken", () => _hub.InvokeAsync("ClearAzureDevOpsToken"));
+
+    public Task<AzureDevOpsConnectionDto?> TestAzureDevOpsConnectionAsync()
+        => TryInvokeAsync<AzureDevOpsConnectionDto>("TestAzureDevOpsConnection");
+
     public async Task<List<TicketProjectDto>> GetTicketProjectsAsync()
         => await TryInvokeAsync<List<TicketProjectDto>>("GetTicketProjects") ?? [];