Commit inicial - WordPress Análisis de Precios Unitarios

- WordPress core y plugins
- Tema Twenty Twenty-Four configurado
- Plugin allow-unfiltered-html.php simplificado
- .gitignore configurado para excluir wp-config.php y uploads

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

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

wp-content/plugins/thrive-visual-editor/inc/traits/trait-is-singleton.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Thrive Themes - https://thrivethemes.com
+ *
+ * @package thrive-theme
+ */
+
+namespace TCB\Traits;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Silence is golden!
+}
+
+/**
+ * Trait Is_Singleton
+ *
+ * @package TCB\Traits
+ */
+trait Is_Singleton {
+
+	private static $_instance;
+
+	/**
+	 * General singleton implementation for getting class instances that also require an id
+	 *
+	 * @param int $id
+	 *
+	 * @return static
+	 */
+	public static function get_instance_with_id( $id = 0 ) {
+		/* if we don't have any instance or when we send an id that is not the same as the previous one, we create a new instance */
+		if ( empty( static::$_instance ) || is_wp_error( $id ) || ( ! empty( $id ) && static::$_instance->ID !== $id ) ) {
+			static::$_instance = new static( $id );
+		}
+
+		return static::$_instance;
+	}
+
+	/**
+	 * General singleton implementation for getting a class instance
+	 *
+	 * @return static
+	 */
+	public static function get_instance() {
+		if ( empty( static::$_instance ) ) {
+			static::$_instance = new static();
+		}
+
+		return static::$_instance;
+	}
+}