perf(central): set-based ingest, aligned partition purge, KPI query shapes, EF hygiene

tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/Configurations/AuditLogEntityTypeConfigurationTests.cs

@@ -52,22 +52,31 @@ public class AuditLogEntityTypeConfigurationTests : IDisposable
     }
 
     [Fact]
-    public void Configure_DeclaresUniqueIndex_OnEventIdAlone_ForIdempotencyLookups()
+    public void Configure_DeclaresNoNonAlignedEventIdIndex_UniquenessRidesTheAlignedClusteredKey()
     {
-        // EventId remains globally unique (the idempotency key for
-        // InsertIfNotExistsAsync) via a dedicated unique index independent of the
-        // composite PK.
+        // WP2.2 (AlignAuditLogEventIdUniqueness): the standalone non-aligned
+        // UX_AuditLog_EventId is gone. EventId uniqueness now rides the clustered
+        // PK (EventId, OccurredAtUtc), which is partition-aligned on
+        // ps_AuditLog_Month — so ALTER TABLE ... SWITCH PARTITION no longer needs
+        // an offline index drop/rebuild around every retention purge. EventId is a
+        // GUID minted once at the site alongside OccurredAtUtc, so pair-uniqueness
+        // is EventId-uniqueness in practice, and the idempotency probe
+        // (WHERE EventId = @id) still seeks the clustered key's leading column.
+        //
+        // Re-declaring a single-column unique index here would silently reinstate
+        // the SWITCH incompatibility, so this test pins its absence.
         var entity = _context.Model.FindEntityType(typeof(AuditLogRow));
         Assert.NotNull(entity);
 
-        var eventIdIndex = entity!.GetIndexes()
-            .SingleOrDefault(i => i.GetDatabaseName() == "UX_AuditLog_EventId");
+        Assert.DoesNotContain(
+            entity!.GetIndexes(),
+            i => i.GetDatabaseName() == "UX_AuditLog_EventId");
 
-        Assert.NotNull(eventIdIndex);
-        Assert.True(eventIdIndex!.IsUnique);
-
-        var indexedProperty = Assert.Single(eventIdIndex.Properties);
-        Assert.Equal(nameof(AuditLogRow.EventId), indexedProperty.Name);
+        var pk = entity.FindPrimaryKey();
+        Assert.NotNull(pk);
+        Assert.Equal(
+            new[] { nameof(AuditLogRow.EventId), nameof(AuditLogRow.OccurredAtUtc) },
+            pk!.Properties.Select(p => p.Name).ToArray());
     }
 
     [Fact]
@@ -164,7 +173,8 @@ public class AuditLogEntityTypeConfigurationTests : IDisposable
             "IX_AuditLog_ParentExecution",
             "IX_AuditLog_Site_Occurred",
             "IX_AuditLog_Target_Occurred",
-            "UX_AuditLog_EventId",
+            // UX_AuditLog_EventId is intentionally absent — dropped by
+            // AlignAuditLogEventIdUniqueness; the aligned clustered PK carries it.
         };
 
         Assert.Equal(expected, indexNames);