YARA-885

src/users/entities/db-service/expert-file-activity.db.service.ts

@@ -71,6 +71,29 @@ export class ExpertFileActivityDbService {
       .lean();
   }
 
+  /** Activity rows for one expert and file kind (claim or blame panel). */
+  async findByExpert(
+    expertId: string | Types.ObjectId,
+    fileType: ExpertFileKind,
+  ): Promise<
+    Array<{
+      fileId: Types.ObjectId;
+      eventType: ExpertFileActivityType;
+      occurredAt: Date;
+    }>
+  > {
+    return this.activityModel
+      .find(
+        {
+          expertId: new Types.ObjectId(String(expertId)),
+          fileType,
+        },
+        { fileId: 1, eventType: 1, occurredAt: 1 },
+      )
+      .sort({ occurredAt: 1, _id: 1 })
+      .lean();
+  }
+
   /** All file-activity rows for an insurer tenant (blame + claim experts). */
   async findByTenant(tenantId: string | Types.ObjectId): Promise<
     Array<{