feat(ui): external services tab with Azure DevOps PAT, draft PR button and link in company repos

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

@@ -0,0 +1,46 @@
+using ClaudeDo.Ui.ViewModels.Islands;
+using Xunit;
+
+namespace ClaudeDo.Ui.Tests.ViewModels;
+
+/// <summary>Detail pane in a company repo: approve becomes "create draft PR" / "update PR", and the PR link only exists once there is a PR.</summary>
+public sealed class MergeSectionCompanyRepoTests
+{
+    private sealed class Worker : StubWorkerClient { }
+
+    private static MergeSectionViewModel Vm() => new(new Worker(), services: null!);
+
+    [Fact]
+    public void PrivateRepo_ShowsOnlyApproveAndMerge()
+    {
+        var vm = Vm();
+
+        Assert.True(vm.ShowApproveMerge);
+        Assert.False(vm.ShowCreatePr);
+        Assert.False(vm.ShowUpdatePr);
+        Assert.False(vm.OpenPullRequestCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public void CompanyRepo_WithoutPr_OffersCreateDraftPr()
+    {
+        var vm = Vm();
+        vm.IsCompanyRepo = true;
+
+        Assert.False(vm.ShowApproveMerge);
+        Assert.True(vm.ShowCreatePr);
+        Assert.False(vm.ShowUpdatePr);
+    }
+
+    [Fact]
+    public void CompanyRepo_WithPr_OffersUpdateAndLink()
+    {
+        var vm = Vm();
+        vm.IsCompanyRepo = true;
+        vm.PullRequestUrl = "https://srv/Coll/Proj/_git/Repo/pullrequest/5";
+
+        Assert.False(vm.ShowCreatePr);
+        Assert.True(vm.ShowUpdatePr);
+        Assert.True(vm.OpenPullRequestCommand.CanExecute(null));
+    }
+}