refactor: centralize domain values and enforce numeric lint

src/modules/investments/operations/presentation/brokerage-operation.dto.ts

@@ -16,6 +16,10 @@ import { MoneyDto } from '../../../../common/money.dto';
 
 import { AccountReferenceDto } from '../../account-reference.dto';
 
+const MAX_CURSOR_LENGTH = 4096;
+const MAX_OPERATIONS_PAGE_SIZE = 1000;
+export const DEFAULT_OPERATIONS_PAGE_SIZE = 100;
+
 export const operationCategories = [
   'trade',
   'income',
@@ -58,15 +62,19 @@ export class BrokerageOperationsQueryDto {
   @ApiPropertyOptional()
   @IsOptional()
   @IsString()
-  @MaxLength(4096)
+  @MaxLength(MAX_CURSOR_LENGTH)
   cursor?: string;
 
-  @ApiPropertyOptional({ minimum: 1, maximum: 1000, default: 100 })
+  @ApiPropertyOptional({
+    minimum: 1,
+    maximum: MAX_OPERATIONS_PAGE_SIZE,
+    default: DEFAULT_OPERATIONS_PAGE_SIZE,
+  })
   @IsOptional()
   @Type(() => Number)
   @IsInt()
   @Min(1)
-  @Max(1000)
+  @Max(MAX_OPERATIONS_PAGE_SIZE)
   limit?: number;
 }