blame and claim refactored

src/request-management/entities/schema/request-management.schema.ts

@@ -368,6 +368,15 @@ export class RequestManagementModel {
   @Prop({ type: String, required: true, index: { unique: true } })
   requestNumber: string;
 
+  /**
+   * Human-friendly shared id across blame+claim (e.g. A14235).
+   * Generated once at creation time and reused by claim.
+   *
+   * NOTE: `sparse` keeps existing documents without this field valid.
+   */
+  @Prop({ type: String, unique: true, index: true, sparse: true, trim: true })
+  publicId?: string;
+
   @Prop()
   blameStatus: ReqBlameStatus | StepsEnum;