Harden PromptKit upgrade integration

internal/app/comparison_test.go

@@ -87,6 +87,40 @@ func TestCompareDetailedPublishesPartialBundleAndReturnsAggregateError(t *testin
 	}
 }
 
+func TestCompareDetailedPublishesPostValidationProfileFailure(t *testing.T) {
+	bundle := generationBundle(t)
+	executor := &generationExecutor{complete: func(execution *promptexec.Execution) {
+		if execution.ProfileID == "weather-deep" {
+			execution.RawOutput = []byte(`{"summary":42}`)
+		}
+	}}
+	result, err := CompareDetailed(context.Background(), ComparisonRequest{
+		Config: comparisonConfig(), Report: ReportDaily, ProfileIDs: []string{"weather-light", "weather-deep"},
+		WorkingDir: t.TempDir(), Date: generationTime("2026-05-29T12:00:00-05:00"),
+		Clock:     timeutil.FixedClock{Time: generationTime("2026-05-29T08:30:00-05:00")},
+		Collector: &generationCollector{bundle: &bundle}, Executor: executor,
+	})
+	if err == nil || result == nil || result.Succeeded != 1 || result.Failed != 1 || result.ManifestPath == "" {
+		t.Fatalf("CompareDetailed() result/error = %#v/%v", result, err)
+	}
+	failure := result.Results[1]
+	if failure.Status != comparison.StatusFailed || failure.ValidationStatus != promptexec.ValidationPassed || failure.RepairAttempts == nil || *failure.RepairAttempts != 0 {
+		t.Fatalf("post-validation failure = %#v", failure)
+	}
+	data, readErr := os.ReadFile(result.ManifestPath)
+	if readErr != nil {
+		t.Fatal(readErr)
+	}
+	var manifest comparison.Manifest
+	if decodeErr := json.Unmarshal(data, &manifest); decodeErr != nil {
+		t.Fatal(decodeErr)
+	}
+	manifestFailure := manifest.Results[1]
+	if manifestFailure.ValidationStatus != "passed" || manifestFailure.RepairAttempts == nil || *manifestFailure.RepairAttempts != 0 {
+		t.Fatalf("published post-validation failure = %#v", manifestFailure)
+	}
+}
+
 func TestCompareDetailedRetainsCommittedPathsWhenBackupCleanupFails(t *testing.T) {
 	for _, test := range []struct {
 		name  string