feat(cli): add enable/disable condition commands (H4 client path)

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/IOpcUaClientService.cs

@@ -135,6 +135,32 @@ public interface IOpcUaClientService : IDisposable
     /// </returns>
     Task<StatusCode> ShelveAlarmAsync(string conditionNodeId, ShelveKind kind, double shelvingTimeSeconds = 0, CancellationToken ct = default);
 
+    /// <summary>
+    /// Enables an alarm condition by invoking the OPC UA Part 9 ConditionType <c>Enable</c> method
+    /// (the H4 client-driven path). The method takes no input arguments.
+    /// </summary>
+    /// <param name="conditionNodeId">The condition node associated with the alarm being enabled.</param>
+    /// <param name="ct">The cancellation token that aborts the enable request.</param>
+    /// <returns>
+    /// <see cref="StatusCodes.Good"/> on success, or the server's bad <see cref="StatusCode"/>
+    /// (from the underlying <see cref="ServiceResultException"/>) when the enable call
+    /// returns a bad result. Other transport-level failures still surface as exceptions.
+    /// </returns>
+    Task<StatusCode> EnableAsync(string conditionNodeId, CancellationToken ct = default);
+
+    /// <summary>
+    /// Disables an alarm condition by invoking the OPC UA Part 9 ConditionType <c>Disable</c> method
+    /// (the H4 client-driven path). The method takes no input arguments.
+    /// </summary>
+    /// <param name="conditionNodeId">The condition node associated with the alarm being disabled.</param>
+    /// <param name="ct">The cancellation token that aborts the disable request.</param>
+    /// <returns>
+    /// <see cref="StatusCodes.Good"/> on success, or the server's bad <see cref="StatusCode"/>
+    /// (from the underlying <see cref="ServiceResultException"/>) when the disable call
+    /// returns a bad result. Other transport-level failures still surface as exceptions.
+    /// </returns>
+    Task<StatusCode> DisableAsync(string conditionNodeId, CancellationToken ct = default);
+
     /// <summary>
     /// Reads raw historical samples for a historized node.
     /// </summary>

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/OpcUaClientService.cs

@@ -461,6 +461,50 @@ public sealed class OpcUaClientService : IOpcUaClientService
         return StatusCodes.Good;
     }
 
+    /// <inheritdoc />
+    public Task<StatusCode> EnableAsync(string conditionNodeId, CancellationToken ct = default) =>
+        CallEnableDisableAsync(conditionNodeId, enabling: true, ct);
+
+    /// <inheritdoc />
+    public Task<StatusCode> DisableAsync(string conditionNodeId, CancellationToken ct = default) =>
+        CallEnableDisableAsync(conditionNodeId, enabling: false, ct);
+
+    /// <summary>
+    /// Shared body for the H4 Enable/Disable client path. Invokes the OPC UA Part 9 ConditionType
+    /// <c>Enable</c>/<c>Disable</c> method (no input arguments) on the condition object node, mirroring
+    /// the <see cref="AcknowledgeAlarmAsync"/> convention: the methods live on the <c>.Condition</c>
+    /// child node, and a bad call result surfaces as the returned <see cref="StatusCode"/> rather than
+    /// escaping as an uncaught <see cref="ServiceResultException"/>.
+    /// </summary>
+    /// <param name="conditionNodeId">The condition node associated with the alarm.</param>
+    /// <param name="enabling"><c>true</c> to invoke Enable; <c>false</c> to invoke Disable.</param>
+    /// <param name="ct">The cancellation token that aborts the request.</param>
+    private async Task<StatusCode> CallEnableDisableAsync(string conditionNodeId, bool enabling, CancellationToken ct)
+    {
+        ThrowIfDisposed();
+        ThrowIfNotConnected();
+
+        // Enable/Disable live on the same .Condition child node as Acknowledge/Confirm.
+        var conditionObjId = conditionNodeId.EndsWith(".Condition")
+            ? NodeId.Parse(conditionNodeId)
+            : NodeId.Parse(conditionNodeId + ".Condition");
+        var methodId = enabling ? MethodIds.ConditionType_Enable : MethodIds.ConditionType_Disable;
+
+        try
+        {
+            await _session!.CallMethodAsync(conditionObjId, methodId, [], ct);
+        }
+        catch (ServiceResultException ex)
+        {
+            Logger.Warning(ex, "Failed to {Operation} alarm on {ConditionId} (status {Status})",
+                enabling ? "enable" : "disable", conditionNodeId, ex.StatusCode);
+            return ex.StatusCode;
+        }
+
+        Logger.Debug("{Operation} alarm on {ConditionId}", enabling ? "Enabled" : "Disabled", conditionNodeId);
+        return StatusCodes.Good;
+    }
+
     /// <inheritdoc />
     public async Task<IReadOnlyList<DataValue>> HistoryReadRawAsync(
         NodeId nodeId, DateTime startTime, DateTime endTime, int maxValues = 1000, CancellationToken ct = default)