terminado margenes presupuesto e incluido en la api

src/main/java/com/imprimelibros/erp/config/BeanValidationConfig.java

@@ -0,0 +1,24 @@
+package com.imprimelibros.erp.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
+import org.springframework.boot.autoconfigure.orm.jpa.HibernatePropertiesCustomizer;
+
+import jakarta.validation.ValidatorFactory;
+
+@Configuration
+public class BeanValidationConfig {
+
+    // Asegura que usamos la factory de Spring (con SpringConstraintValidatorFactory)
+    @Bean
+    public LocalValidatorFactoryBean validator() {
+        return new LocalValidatorFactoryBean();
+    }
+
+    // Inserta esa factory en Hibernate/JPA
+    @Bean
+    public HibernatePropertiesCustomizer hibernateValidationCustomizer(ValidatorFactory vf) {
+        return props -> props.put("jakarta.persistence.validation.factory", vf);
+    }
+}