feat(ui): notification detail modal shows message body + recipients

tests/ScadaLink.CentralUI.Tests/Pages/NotificationReportDetailModalTests.cs

@@ -29,6 +29,27 @@ public class NotificationReportDetailModalTests : BunitContext
     private readonly ActorSystem _system = ActorSystem.Create("notif-report-modal-tests");
     private readonly CommunicationService _comms;
 
+    private NotificationDetailResponse _detailReply =
+        new("d", true, null, new NotificationDetail(
+            NotificationId: "notif-aaaaaaaa-1111-full-id",
+            Type: "Email",
+            ListName: "Ops On-Call",
+            Subject: "Pump fault at Plant-A",
+            Body: "Pump-001 tripped on overcurrent at 14:32. Investigate immediately.",
+            Status: "Parked",
+            RetryCount: 3,
+            LastError: "SMTP timeout connecting to mail relay",
+            ResolvedTargets: "[\"ops@example.com\",\"oncall@example.com\"]",
+            TypeData: null,
+            SourceSiteId: "plant-a",
+            SourceInstanceId: "Pump-001",
+            SourceScript: "PumpFault.csx",
+            SiteEnqueuedAt: DateTimeOffset.UtcNow.AddMinutes(-31),
+            CreatedAt: DateTimeOffset.UtcNow.AddMinutes(-30),
+            LastAttemptAt: DateTimeOffset.UtcNow.AddMinutes(-5),
+            NextAttemptAt: null,
+            DeliveredAt: null));
+
     private NotificationOutboxQueryResponse _queryReply =
         new("q", true, null, new List<NotificationSummary>
         {
@@ -149,6 +170,90 @@ public class NotificationReportDetailModalTests : BunitContext
         });
     }
 
+    [Fact]
+    public void Modal_FetchesAndShowsBody()
+    {
+        var cut = Render<NotificationReportPage>();
+        cut.WaitForState(() => cut.Markup.Contains("Pump fault at Plant-A"));
+
+        var row = cut.FindAll("tbody tr")
+            .First(r => r.TextContent.Contains("Pump fault at Plant-A"));
+        row.DoubleClick();
+
+        cut.WaitForAssertion(() =>
+        {
+            var modal = cut.Find(".modal.show");
+            Assert.Contains(
+                "Pump-001 tripped on overcurrent at 14:32. Investigate immediately.",
+                modal.TextContent);
+        });
+    }
+
+    [Fact]
+    public void Modal_ShowsRecipients_FromResolvedTargets()
+    {
+        var cut = Render<NotificationReportPage>();
+        cut.WaitForState(() => cut.Markup.Contains("Pump fault at Plant-A"));
+
+        var row = cut.FindAll("tbody tr")
+            .First(r => r.TextContent.Contains("Pump fault at Plant-A"));
+        row.DoubleClick();
+
+        cut.WaitForAssertion(() =>
+        {
+            var modal = cut.Find(".modal.show");
+            Assert.Contains("ops@example.com", modal.TextContent);
+            Assert.Contains("oncall@example.com", modal.TextContent);
+        });
+    }
+
+    [Fact]
+    public void Modal_ShowsListFallback_WhenResolvedTargetsNull()
+    {
+        _detailReply = _detailReply with
+        {
+            Detail = _detailReply.Detail! with { ResolvedTargets = null },
+        };
+
+        var cut = Render<NotificationReportPage>();
+        cut.WaitForState(() => cut.Markup.Contains("Pump fault at Plant-A"));
+
+        var row = cut.FindAll("tbody tr")
+            .First(r => r.TextContent.Contains("Pump fault at Plant-A"));
+        row.DoubleClick();
+
+        cut.WaitForAssertion(() =>
+        {
+            var modal = cut.Find(".modal.show");
+            Assert.Contains("Not yet resolved", modal.TextContent);
+            Assert.Contains("Ops On-Call", modal.TextContent);
+            Assert.Contains("at delivery time", modal.TextContent);
+        });
+    }
+
+    [Fact]
+    public void Modal_ShowsError_WhenDetailFetchFails()
+    {
+        _detailReply = new NotificationDetailResponse("d", false, "detail store unavailable", null);
+
+        var cut = Render<NotificationReportPage>();
+        cut.WaitForState(() => cut.Markup.Contains("Pump fault at Plant-A"));
+
+        var row = cut.FindAll("tbody tr")
+            .First(r => r.TextContent.Contains("Pump fault at Plant-A"));
+        row.DoubleClick();
+
+        cut.WaitForAssertion(() =>
+        {
+            var modal = cut.Find(".modal.show");
+            // The error surfaces in the body/recipient sections...
+            Assert.Contains("detail store unavailable", modal.TextContent);
+            // ...but the summary fields (from the grid row) still render.
+            Assert.Contains("Ops On-Call", modal.TextContent);
+            Assert.Contains("notif-aaaaaaaa-1111-full-id", modal.TextContent);
+        });
+    }
+
     protected override void Dispose(bool disposing)
     {
         if (disposing)
@@ -163,6 +268,10 @@ public class NotificationReportDetailModalTests : BunitContext
         public ScriptedOutboxActor(NotificationReportDetailModalTests test)
         {
             Receive<NotificationOutboxQueryRequest>(_ => Sender.Tell(test._queryReply));
+            Receive<NotificationDetailRequest>(r => Sender.Tell(test._detailReply with
+            {
+                CorrelationId = r.CorrelationId,
+            }));
             Receive<RetryNotificationRequest>(r =>
                 Sender.Tell(new RetryNotificationResponse(r.CorrelationId, true, null)));
             Receive<DiscardNotificationRequest>(r =>