refactor(centralui): AuditResultsGrid adopts KeysetPager + AuditFilterBar adopts DateTimeRangeFilter (T35g)

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Audit/AuditFilterBar.razor

@@ -91,18 +91,17 @@
             <div class="col-auto" data-test="filter-custom-range">
                 @if (_model.TimeRange == AuditTimeRangePreset.Custom)
                 {
-                    <div class="d-flex gap-1 align-items-end">
-                        <div>
-                            <label class="form-label small mb-1" for="audit-from">From (UTC)</label>
-                            <input id="audit-from" type="datetime-local" class="form-control form-control-sm"
-                                   @bind="_model.CustomFromUtc" />
-                        </div>
-                        <div>
-                            <label class="form-label small mb-1" for="audit-to">To (UTC)</label>
-                            <input id="audit-to" type="datetime-local" class="form-control form-control-sm"
-                                   @bind="_model.CustomToUtc" />
-                        </div>
-                    </div>
+                    @* DateTimeRangeFilter is INPUT-ONLY: it surfaces the raw datetime-local
+                       picks (DateTimeKind.Unspecified) straight into the model's range fields.
+                       The local→UTC conversion still happens later in Apply()/LocalInputToUtc,
+                       exactly as before. IdPrefix="audit" keeps the audit-from/audit-to ids. *@
+                    <DateTimeRangeFilter From="_model.CustomFromUtc"
+                                         FromChanged="@(v => _model.CustomFromUtc = v)"
+                                         To="_model.CustomToUtc"
+                                         ToChanged="@(v => _model.CustomToUtc = v)"
+                                         IdPrefix="audit"
+                                         FromLabel="From (UTC)"
+                                         ToLabel="To (UTC)" />
                 }
                 else
                 {

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Audit/AuditResultsGrid.razor

@@ -72,24 +72,20 @@
         </table>
     </div>
 
-    <div class="d-flex justify-content-between align-items-center">
-        <span class="text-muted small">Page @_pageNumber · @_rows.Count rows</span>
-        @* CentralUI-032: keyset paging is naturally forward-only, but the
-           in-component _cursorStack lets the user step back through previous
-           pages by replaying the prior cursor. The Previous button is gated
-           on the stack having at least one prior cursor — i.e. we are not on
-           the first page. *@
-        <div class="btn-group">
-            <button class="btn btn-outline-secondary btn-sm"
-                    data-test="grid-prev-page"
-                    disabled="@(_loading || !CanGoBack)"
-                    @onclick="PrevPage">Previous page</button>
-            <button class="btn btn-outline-secondary btn-sm"
-                    data-test="grid-next-page"
-                    disabled="@(_loading || _rows.Count < _pageSize)"
-                    @onclick="NextPage">Next page</button>
-        </div>
-    </div>
+    @* CentralUI-032: keyset paging is naturally forward-only, but the
+       in-component _cursorStack lets the user step back through previous
+       pages by replaying the prior cursor. The Previous button is gated
+       on CanGoBack (the stack having at least one prior cursor — i.e. we
+       are not on the first page); HasNextPage mirrors the prior "short
+       page = end" signal (a full page suggests more rows may follow). All
+       cursor logic stays page-side; KeysetPager is purely presentational. *@
+    <KeysetPager PageNumber="_pageNumber"
+                 RowCount="_rows.Count"
+                 CanGoBack="CanGoBack"
+                 HasNextPage="@(!_loading && _rows.Count >= _pageSize)"
+                 Disabled="_loading"
+                 OnPrevious="PrevPage"
+                 OnNext="NextPage" />
 </div>
 
 @code {

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/Components/Audit/AuditResultsGridTests.cs

@@ -95,7 +95,7 @@ public class AuditResultsGridTests : BunitContext
 
         var cut = Render<AuditResultsGrid>(p => p.Add(c => c.Filter, new AuditLogQueryFilter()));
 
-        cut.Find("[data-test=\"grid-next-page\"]").Click();
+        cut.Find("[data-test=\"keyset-next\"]").Click();
 
         // Two service calls: initial + next.
         Assert.Equal(2, _calls.Count);