final update on moallm client

src/inquiry/dto/sayah-request.dto.ts

@@ -16,9 +16,23 @@ export class SayahRequestDto {
   @Matches(/^\d{10}$/, { message: 'nationalCode must be exactly 10 digits' })
   nationalCode!: string;
 
-  @ApiPropertyOptional({ nullable: true })
+  @ApiPropertyOptional({
+    type: String,
+    example: '',
+    nullable: true,
+    description: 'Legal entity ID; use empty string for natural persons',
+  })
   @IsOptional()
   @IsString()
+  @Transform(({ value }: { value: unknown }) => {
+    if (value === null || value === undefined) {
+      return value;
+    }
+    if (typeof value === 'object') {
+      return '';
+    }
+    return String(value);
+  })
   legalId?: string | null;
 
   @ApiProperty({