fix(deployment): read every external system's methods in one query for the artifact snapshot (review 2026-10-21 04/P7)

src/ZB.MOM.WW.ScadaBridge.Commons/Interfaces/Repositories/IDeploymentManagerRepository.cs

@@ -1,4 +1,5 @@
 using ZB.MOM.WW.ScadaBridge.Commons.Entities.Deployment;
+using ZB.MOM.WW.ScadaBridge.Commons.Entities.ExternalSystems;
 using ZB.MOM.WW.ScadaBridge.Commons.Entities.Instances;
 using ZB.MOM.WW.ScadaBridge.Commons.Types.Deployment;
 using ZB.MOM.WW.ScadaBridge.Commons.Types.Enums;
@@ -206,6 +207,16 @@ public interface IDeploymentManagerRepository
     /// <returns>The number of rows deleted; fewer than <paramref name="batchSize"/> means the sweep is complete.</returns>
     Task<int> PurgeSystemArtifactDeploymentRecordsAsync(DateTimeOffset cutoffUtc, int batchSize, CancellationToken cancellationToken = default);
 
+    /// <summary>
+    /// Reads every external-system method in ONE untracked query, for the artifact-deploy
+    /// global snapshot (which serializes each system's methods into its artifact). Replaces a
+    /// per-system method query that ran on every artifact deploy and every pending-updates
+    /// evaluation.
+    /// </summary>
+    /// <param name="cancellationToken">A cancellation token that can be used to cancel the operation.</param>
+    /// <returns>All external-system methods; group by <c>ExternalSystemDefinitionId</c>.</returns>
+    Task<IReadOnlyList<ExternalSystemMethod>> GetAllExternalSystemMethodsAsync(CancellationToken cancellationToken = default);
+
     // DeployedConfigSnapshot
     /// <summary>
     /// Gets the deployed config snapshot for an instance.