Fase 1: Estructura Base y DI Container - Clean Architecture

COMPLETADO: Fase 1 de la migración a Clean Architecture + POO

## Estructura de Carpetas
- ✓ Estructura completa de 4 capas (Domain, Application, Infrastructure, Presentation)
- ✓ Carpetas de Use Cases (SaveComponent, GetComponent, DeleteComponent, SyncSchema)
- ✓ Estructura de tests (Unit, Integration, E2E)
- ✓ Carpetas de schemas y templates

## Composer y Autoloading
- ✓ PSR-4 autoloading configurado para ROITheme namespace
- ✓ Autoloader optimizado regenerado

## DI Container
- ✓ DIContainer implementado con patrón Singleton
- ✓ Métodos set(), get(), has() para gestión de servicios
- ✓ Getters específicos para ComponentRepository, ValidationService, CacheService
- ✓ Placeholders que serán implementados en Fase 5
- ✓ Prevención de clonación y deserialización

## Interfaces
- ✓ ComponentRepositoryInterface (Domain)
- ✓ ValidationServiceInterface (Application)
- ✓ CacheServiceInterface (Application)
- ✓ Component entity placeholder (Domain)

## Bootstrap
- ✓ functions.php actualizado con carga de Composer autoloader
- ✓ Inicialización del DIContainer
- ✓ Helper function roi_container() disponible globalmente

## Tests
- ✓ 10 tests unitarios para DIContainer (100% cobertura)
- ✓ Total: 13 tests unitarios, 28 assertions
- ✓ Suite de tests pasando correctamente

## Validación
- ✓ Script de validación automatizado (48/48 checks pasados)
- ✓ 100% de validaciones exitosas

La arquitectura base está lista para la Fase 2.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

template-parts/content-none.php

@@ -4,7 +4,7 @@
  *
  * @link https://developer.wordpress.org/themes/basics/template-hierarchy/
  *
- * @package Apus_Theme
+ * @package ROI_Theme
  * @since 1.0.0
  */
 ?>
@@ -12,7 +12,7 @@
 <section class="no-results not-found">
 
 	<header class="page-header">
-		<h1 class="page-title"><?php esc_html_e( 'Nothing Found', 'apus-theme' ); ?></h1>
+		<h1 class="page-title"><?php esc_html_e( 'Nothing Found', 'roi-theme' ); ?></h1>
 	</header><!-- .page-header -->
 
 	<div class="page-content">
@@ -23,7 +23,7 @@
 			printf(
 				'<p>' . wp_kses(
 					/* translators: 1: link to WP admin new post page. */
-					__( 'Ready to publish your first post? <a href="%1$s">Get started here</a>.', 'apus-theme' ),
+					__( 'Ready to publish your first post? <a href="%1$s">Get started here</a>.', 'roi-theme' ),
 					array(
 						'a' => array(
 							'href' => array(),
@@ -37,7 +37,7 @@
 			?>
 
 			<!-- Search returned no results -->
-			<p><?php esc_html_e( 'Sorry, but nothing matched your search terms. Please try again with some different keywords.', 'apus-theme' ); ?></p>
+			<p><?php esc_html_e( 'Sorry, but nothing matched your search terms. Please try again with some different keywords.', 'roi-theme' ); ?></p>
 			<?php
 			get_search_form();
 
@@ -45,7 +45,7 @@
 			?>
 
 			<!-- Generic no content message -->
-			<p><?php esc_html_e( 'It seems we can&rsquo;t find what you&rsquo;re looking for. Perhaps searching can help.', 'apus-theme' ); ?></p>
+			<p><?php esc_html_e( 'It seems we can&rsquo;t find what you&rsquo;re looking for. Perhaps searching can help.', 'roi-theme' ); ?></p>
 			<?php
 			get_search_form();