fix(deployment): purge SystemArtifactDeploymentRecords in the terminal-record retention sweep (review 2026-10-21 08/G2)

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

@@ -194,6 +194,17 @@ public interface IDeploymentManagerRepository
     /// <param name="cancellationToken">A cancellation token that can be used to cancel the operation.</param>
     /// <returns>A task representing the asynchronous operation.</returns>
     Task DeleteSystemArtifactDeploymentAsync(int id, CancellationToken cancellationToken = default);
+    /// <summary>
+    /// Deletes system artifact deployment records deployed before <paramref name="cutoffUtc"/>,
+    /// in one bounded batch. One row is written per <i>Deploy Artifacts</i> run and nothing
+    /// reads them back, so they share the terminal deployment-record retention window
+    /// instead of growing without bound.
+    /// </summary>
+    /// <param name="cutoffUtc">Records deployed before this instant are eligible.</param>
+    /// <param name="batchSize">Maximum rows deleted in this call.</param>
+    /// <param name="cancellationToken">A cancellation token that can be used to cancel the operation.</param>
+    /// <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);
 
     // DeployedConfigSnapshot
     /// <summary>