feat(v3-batch4-wp4): multi-notifier native alarms (single ReportEvent → raw + equipment notifiers) + teardown symmetry

Materialize each native alarm ONCE at the raw tag (ConditionId = RawPath, Raw
realm); wire the single condition as an SDK event notifier of each referencing
equipment's UNS folder so one ReportEvent fans to every root without
re-reporting per root (which would break Server-object dedup + Part 9 ack
correlation).

- New sink method WireAlarmNotifiers(alarmNodeId, alarmRealm,
  notifierFolderNodeIds, notifierFolderRealm) on IOpcUaAddressSpaceSink,
  forwarded through DeferredAddressSpaceSink + SdkAddressSpaceSink +
  NullOpcUaAddressSpaceSink (the forwarding-trap guard); auto-covered by the
  DeferredSinkForwardingReflectionTests realm + forwarding guards + a
  hand-written forward test.
- OtOpcUaNodeManager: the normative AddNotifier(isInverse) pair + idempotent
  EnsureFolderIsEventNotifier per equipment folder; tracked per condition in
  _alarmNotifierWiring. Teardown symmetry: RemoveNotifier(bidirectional:true) on
  RebuildAddressSpace, RemoveAlarmConditionNode, and RemoveEquipmentSubtree so no
  inverse-notifier entry leaks across redeploys.
- AddressSpaceApplier.MaterialiseRawSubtree wires notifiers for each native alarm
  tag, resolving its ReferencingEquipmentPaths (Area/Line/Equipment) to the
  EquipmentId folder NodeIds via BuildEquipmentIdByFolderPath.
- AlarmTransitionEvent gains ReferencingEquipmentPaths (empty default); /alerts
  renders the referencing-equipment list as display metadata.
- Un-skipped + rewrote the native-alarm dark tests
  (DriverHostActorNativeAlarmTests x6, DriverHostActorNativeAlarmAckRoutingTests
  x1) for the v3 raw-condition model; new NodeManagerMultiNotifierAlarmTests
  proves multi-notifier wiring + teardown symmetry (no leaked duplicates after a
  re-trip) + applier wiring test.

Claude-Session: https://claude.ai/code/session_01LVneM3eh1UtJxEisFXgmox

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/Alerts.razor

@@ -64,7 +64,22 @@ else
                         <tr>
                             <td><span class="mono small">@e.TimestampUtc.ToString("HH:mm:ss.fff")</span></td>
                             <td><span class="mono">@e.AlarmId</span><div class="text-muted small">@e.AlarmName</div></td>
-                            <td><span class="mono small">@e.EquipmentPath</span></td>
+                            <td>
+                                <span class="mono small">@e.EquipmentPath</span>
+                                @* v3 Batch 4 (multi-notifier native alarms): one condition row carries the list
+                                   of referencing equipment (Area/Line/Equipment) as display metadata. Shown only
+                                   when the producer populated it (native alarms whose raw tag ≥1 equipment
+                                   references); scripted alarms + unreferenced native alarms leave it empty. *@
+                                @if (e.ReferencingEquipmentPaths is { Count: > 0 } refs)
+                                {
+                                    <div class="text-muted small" title="Referencing equipment">
+                                        @foreach (var p in refs)
+                                        {
+                                            <span class="chip chip-idle" style="font-size:0.72rem; margin:1px">@p</span>
+                                        }
+                                    </div>
+                                }
+                            </td>
                             <td><span class="chip @KindChipClass(e.TransitionKind)">@e.TransitionKind</span></td>
                             <td class="num">@e.Severity</td>
                             <td>@e.User</td>