diff --git a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Notifications/NotificationActionTests.cs b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Notifications/NotificationActionTests.cs
index ad8fbe94..b79cd45c 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Notifications/NotificationActionTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests/Notifications/NotificationActionTests.cs
@@ -166,4 +166,125 @@ public class NotificationActionTests
             await NotificationDataSeeder.DeleteByMarkerAsync(marker);
         }
     }
+
+    /// <summary>
+    /// Combined-filter narrowing: two Parked rows share one <c>ListName</c> marker but carry
+    /// distinct subjects. Applying the exact-match list filter (the marker) plus
+    /// status=Parked plus the subject keyword for only ONE of the two rows must surface that
+    /// row and exclude its sibling. This proves the filters compose (AND-narrowing) rather
+    /// than widening — the marker isolates the pair from ambient cluster rows, and the
+    /// subject keyword discriminates between them.
+    /// </summary>
+    [SkippableFact]
+    public async Task FilterCombination_StatusPlusList_NarrowsToMatch()
+    {
+        Skip.IfNot(await NotificationDataSeeder.IsAvailableAsync(), DbUnavailableSkipReason);
+
+        var runId = Guid.NewGuid().ToString("N");
+        var marker = $"zztest-notif-wave4-{runId}";
+
+        // Two Parked rows under the SAME ListName marker, distinct subjects.
+        await NotificationDataSeeder.InsertParkedNotificationAsync(
+            Guid.NewGuid(), marker, "wave4-alpha", "site-a");
+        await NotificationDataSeeder.InsertParkedNotificationAsync(
+            Guid.NewGuid(), marker, "wave4-beta", "site-a");
+
+        try
+        {
+            var page = await _fixture.NewAuthenticatedPageAsync();
+            await page.GotoAsync($"{PlaywrightFixture.BaseUrl}{NotificationReportUrl}");
+            await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+            await Assertions.Expect(page.Locator("h4:has-text('Notification Report')")).ToBeVisibleAsync();
+
+            // #no-list is an exact-match text input bound @bind (commit-on-change), so
+            // FillAsync (which only fires `input`) must be followed by an explicit
+            // `change` dispatch to commit the bound value before the Query roundtrip —
+            // same rationale as SetSubjectKeywordAsync for the subject box.
+            await page.Locator("#no-list").FillAsync(marker);
+            await page.Locator("#no-list").DispatchEventAsync("change");
+
+            // Status select commits on its own SelectOptionAsync change event.
+            await page.Locator("#no-status").SelectOptionAsync("Parked");
+
+            // Subject keyword for ONLY the alpha row.
+            await SetSubjectKeywordAsync(page, "wave4-alpha");
+
+            await page.Locator("button.btn-primary:has-text('Query')").ClickAsync();
+            await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+            // The combined filters narrow to alpha: alpha visible, beta absent.
+            var alphaRow = page.Locator("tbody tr", new() { HasText = "wave4-alpha" });
+            await Assertions.Expect(alphaRow).ToBeVisibleAsync(new() { Timeout = 15_000 });
+            await Assertions.Expect(
+                page.Locator("tbody tr").Filter(new() { HasText = "wave4-beta" }))
+                .ToHaveCountAsync(0);
+        }
+        finally
+        {
+            await NotificationDataSeeder.DeleteByMarkerAsync(marker);
+        }
+    }
+
+    /// <summary>
+    /// The row detail modal opens on a DOUBLE-CLICK of a non-Actions row cell (there is no
+    /// dedicated open button) and closes via the header X and the footer Close button. Both
+    /// close affordances are wired to the same <c>CloseDetail</c> handler; this exercises
+    /// each path independently (open → X-close → reopen → footer-close).
+    /// </summary>
+    [SkippableFact]
+    public async Task DetailModal_OpenOnDblClick_CloseViaXAndFooter()
+    {
+        Skip.IfNot(await NotificationDataSeeder.IsAvailableAsync(), DbUnavailableSkipReason);
+
+        var runId = Guid.NewGuid().ToString("N");
+        var marker = $"zztest-notif-wave4-{runId}";
+
+        await NotificationDataSeeder.InsertParkedNotificationAsync(
+            Guid.NewGuid(), marker, "wave4-detail", "site-a");
+
+        try
+        {
+            var page = await _fixture.NewAuthenticatedPageAsync();
+            await page.GotoAsync($"{PlaywrightFixture.BaseUrl}{NotificationReportUrl}");
+            await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+            await Assertions.Expect(page.Locator("h4:has-text('Notification Report')")).ToBeVisibleAsync();
+
+            // Narrow to the seeded row by its exact ListName marker (+ Parked status).
+            await page.Locator("#no-list").FillAsync(marker);
+            await page.Locator("#no-list").DispatchEventAsync("change");
+            await page.Locator("#no-status").SelectOptionAsync("Parked");
+            await page.Locator("button.btn-primary:has-text('Query')").ClickAsync();
+            await page.WaitForLoadStateAsync(LoadState.NetworkIdle);
+
+            var row = page.Locator("tbody tr").Filter(new() { HasText = "wave4-detail" });
+            await Assertions.Expect(row).ToBeVisibleAsync(new() { Timeout = 15_000 });
+
+            // Open the modal: double-click the SUBJECT cell (a non-Actions cell). The
+            // Actions cell carries @ondblclick:stopPropagation, so double-clicking it would
+            // not open the modal — the subject cell is the correct target.
+            await row.Locator("td", new() { HasText = "wave4-detail" }).DblClickAsync();
+            await Assertions.Expect(page.Locator(".modal.show.d-block")).ToBeVisibleAsync();
+            await Assertions.Expect(page.Locator(".modal-title")).ToContainTextAsync("Notification Detail");
+
+            // Close via the header X.
+            await page.ClickAsync("button.btn-close[aria-label='Close']");
+            await Assertions.Expect(page.Locator(".modal.show.d-block")).ToHaveCountAsync(0);
+
+            // Re-open (double-click the subject cell again).
+            await row.Locator("td", new() { HasText = "wave4-detail" }).DblClickAsync();
+            await Assertions.Expect(page.Locator(".modal.show.d-block")).ToBeVisibleAsync();
+
+            // Close via the footer Close button.
+            await page.ClickAsync(".modal-footer button.btn-outline-secondary:has-text('Close')");
+            await Assertions.Expect(page.Locator(".modal.show.d-block")).ToHaveCountAsync(0);
+
+            // Escape-to-close is NOT wired on the Notification detail modal (no keydown handler); covering the X and footer-Close paths that ARE wired (backdrop also closes but is omitted for brevity).
+        }
+        finally
+        {
+            await NotificationDataSeeder.DeleteByMarkerAsync(marker);
+        }
+    }
 }