Fase 0: Configuración inicial del proyecto

- Configuración de Composer con PSR-4
- Configuración de PHPUnit
- Configuración de PHPCS
- Scripts de backup y rollback
- Estructura de carpetas inicial
- Documentación de procedimientos

composer.json

@@ -0,0 +1,39 @@
+{
+    "name": "roi/roi-theme",
+    "description": "ROI Theme - Migración a Clean Architecture + POO",
+    "type": "wordpress-theme",
+    "license": "proprietary",
+    "require": {
+        "php": ">=8.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.0",
+        "squizlabs/php_codesniffer": "^3.7",
+        "wp-coding-standards/wpcs": "^3.0",
+        "mockery/mockery": "^1.5"
+    },
+    "autoload": {
+        "psr-4": {
+            "ROITheme\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "ROITheme\\Tests\\": "tests/"
+        }
+    },
+    "scripts": {
+        "test": "phpunit",
+        "phpcs": "phpcs --standard=WordPress src/",
+        "phpcbf": "phpcbf --standard=WordPress src/"
+    },
+    "config": {
+        "secure-http": true,
+        "disable-tls": false,
+        "preferred-install": "dist",
+        "platform-check": false,
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
+    }
+}