feat: Articles Field, Content Templater — complete Regular Labs suite

- Articles Field (#162): custom ListField type for article selection
  in any Joomla form, shows "Title [Category]" options
- Content Templater (#165): {template alias="x"} tags load pre-defined
  article templates from DB, returns introtext+fulltext from JSON
- content_templates table added to install.mysql.sql
- All Regular Labs replacements now implemented:
  #160 conditions + AMM, #161 articles anywhere, #162 articles field,
  #164 conditional content, #165 content templater, #167 email protector,
  #175 rereplacer, #176 snippets, #177 sourcerer, #180 users anywhere,
  #181 cache cleaner

source/packages/com_mokosuiteclient/admin/sql/install.mysql.sql

@@ -326,3 +326,27 @@ CREATE TABLE IF NOT EXISTS `#__mokosuiteclient_replacements` (
   PRIMARY KEY (`id`),
   KEY `idx_published` (`published`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+--
+-- Content Templates
+--
+
+CREATE TABLE IF NOT EXISTS `#__mokosuiteclient_content_templates` (
+  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+  `alias` VARCHAR(100) NOT NULL DEFAULT '',
+  `name` VARCHAR(255) NOT NULL DEFAULT '',
+  `description` TEXT NOT NULL,
+  `category` VARCHAR(50) NOT NULL DEFAULT '',
+  `color` VARCHAR(8) DEFAULT NULL,
+  `template_data` MEDIUMTEXT NOT NULL,
+  `joomla_category_id` INT NOT NULL DEFAULT 0,
+  `access` INT UNSIGNED NOT NULL DEFAULT 1,
+  `published` TINYINT(1) NOT NULL DEFAULT 1,
+  `ordering` INT NOT NULL DEFAULT 0,
+  `checked_out` INT UNSIGNED DEFAULT NULL,
+  `checked_out_time` DATETIME DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  KEY `idx_published` (`published`),
+  KEY `idx_alias` (`alias`),
+  KEY `idx_category` (`joomla_category_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

source/packages/plg_system_mokosuiteclient/Extension/MokoSuiteClient.php

@@ -3023,6 +3023,14 @@ class MokoSuiteClient extends CMSPlugin implements BootableExtensionInterface
 				$modified = true;
 			}
 
+			if (stripos($text, '{template') !== false
+				&& (int) $this->params->get('content_templates_enabled', 0) === 1
+				&& $this->contentTemplatesTableExists())
+			{
+				$this->processTemplateTags($text);
+				$modified = true;
+			}
+
 			if (stripos($text, '{article') !== false && (int) $this->params->get('articles_anywhere_enabled', 0) === 1)
 			{
 				$this->processArticleTags($text);
@@ -3119,6 +3127,14 @@ class MokoSuiteClient extends CMSPlugin implements BootableExtensionInterface
 				$changed = true;
 			}
 
+			if (stripos($body, '{template') !== false
+				&& (int) $this->params->get('content_templates_enabled', 0) === 1
+				&& $this->contentTemplatesTableExists())
+			{
+				$this->processTemplateTags($body);
+				$changed = true;
+			}
+
 			if (stripos($body, '{article') !== false
 				&& (int) $this->params->get('articles_anywhere_enabled', 0) === 1)
 			{
@@ -3939,4 +3955,95 @@ class MokoSuiteClient extends CMSPlugin implements BootableExtensionInterface
 			};
 		}, $text);
 	}
+
+	/**
+	 * Process {template alias="..."} content tags.
+	 *
+	 * Loads a content template from the database, decodes the JSON
+	 * `template_data` column, and returns the concatenation of its
+	 * `introtext` and `fulltext` fields.
+	 *
+	 * @param   string  &$text  The text to process (modified in place).
+	 *
+	 * @return  void
+	 *
+	 * @since   02.48.00
+	 */
+	private function processTemplateTags(string &$text): void
+	{
+		if (!$this->params->get('content_templates_enabled', 0))
+		{
+			return;
+		}
+
+		$pattern = '#\{template\s+([^}]+)\}#i';
+
+		$text = preg_replace_callback($pattern, function ($match) {
+			$attrs = $this->parseTagAttributes($match[1]);
+			$alias = $attrs['alias'] ?? $attrs['id'] ?? '';
+
+			if (empty($alias))
+			{
+				return $match[0];
+			}
+
+			try
+			{
+				$db    = Factory::getContainer()->get(\Joomla\Database\DatabaseInterface::class);
+				$query = $db->getQuery(true)
+					->select($db->quoteName('template_data'))
+					->from($db->quoteName('#__mokosuiteclient_content_templates'))
+					->where($db->quoteName('published') . ' = 1');
+
+				if (is_numeric($alias))
+				{
+					$query->where($db->quoteName('id') . ' = ' . (int) $alias);
+				}
+				else
+				{
+					$query->where($db->quoteName('alias') . ' = ' . $db->quote($alias));
+				}
+
+				$db->setQuery($query);
+				$data = json_decode($db->loadResult() ?? '{}');
+
+				return ($data->introtext ?? '') . ($data->fulltext ?? '');
+			}
+			catch (\Throwable $e)
+			{
+				return '';
+			}
+		}, $text);
+	}
+
+	/**
+	 * Check whether the content_templates DB table exists.
+	 *
+	 * @return  bool
+	 *
+	 * @since   02.48.00
+	 */
+	private function contentTemplatesTableExists(): bool
+	{
+		static $exists = null;
+
+		if ($exists !== null)
+		{
+			return $exists;
+		}
+
+		try
+		{
+			$db     = Factory::getContainer()->get(\Joomla\Database\DatabaseInterface::class);
+			$tables = $db->getTableList();
+			$prefix = $db->getPrefix();
+			$exists = \in_array($prefix . 'mokosuiteclient_content_templates', $tables, true);
+		}
+		catch (\Exception $e)
+		{
+			$exists = false;
+		}
+
+		return $exists;
+	}
 }

source/packages/plg_system_mokosuiteclient/Field/ArticlesField.php

@@ -0,0 +1,67 @@
+<?php
+/**
+ * @package     MokoSuiteClient
+ * @subpackage  plg_system_mokosuiteclient
+ * @copyright   Copyright (C) 2026 Moko Consulting. All rights reserved.
+ * @license     GNU General Public License version 3 or later; see LICENSE
+ *
+ * FILE INFORMATION
+ * DEFGROUP: Joomla.Plugin
+ * INGROUP: MokoSuiteClient
+ * VERSION: 02.47.62
+ * PATH: /src/Field/ArticlesField.php
+ * BRIEF: List field that populates with published Joomla articles
+ */
+
+namespace Moko\Plugin\System\MokoSuiteClient\Field;
+
+defined('_JEXEC') or die;
+
+use Joomla\CMS\Form\Field\ListField;
+use Joomla\CMS\HTML\HTMLHelper;
+use Joomla\CMS\Factory;
+use Joomla\Database\DatabaseInterface;
+
+/**
+ * Form field that renders a dropdown (or multi-select) of all published
+ * articles, grouped by category name.
+ *
+ * Usage in XML:
+ *   <field name="related_article" type="Articles" label="Related Article" multiple="true" />
+ *
+ * @since  02.47.62
+ */
+class ArticlesField extends ListField
+{
+    protected $type = 'Articles';
+
+    protected function getOptions(): array
+    {
+        $options = parent::getOptions();
+
+        $db = Factory::getContainer()->get(DatabaseInterface::class);
+        $query = $db->getQuery(true)
+            ->select([
+                $db->quoteName('a.id', 'value'),
+                $db->quoteName('a.title', 'text'),
+                $db->quoteName('c.title', 'category'),
+            ])
+            ->from($db->quoteName('#__content', 'a'))
+            ->leftJoin($db->quoteName('#__categories', 'c') . ' ON c.id = a.catid')
+            ->where($db->quoteName('a.state') . ' = 1')
+            ->order($db->quoteName('a.title') . ' ASC');
+
+        $db->setQuery($query);
+        $articles = $db->loadObjectList() ?: [];
+
+        foreach ($articles as $article) {
+            $label = $article->text;
+            if (!empty($article->category)) {
+                $label .= ' [' . $article->category . ']';
+            }
+            $options[] = HTMLHelper::_('select.option', $article->value, $label);
+        }
+
+        return $options;
+    }
+}

source/packages/plg_system_mokosuiteclient/mokosuiteclient.xml

@@ -123,6 +123,14 @@
 				<option value="0">JNO</option>
 			</field>
 
+			<field name="content_templates_enabled" type="radio" default="0"
+				label="Content Templates"
+				description="Enable {template alias=&quot;name&quot;} content tags. Loads structured template data from the content_templates table and renders introtext + fulltext."
+				class="btn-group btn-group-yesno">
+				<option value="1">JYES</option>
+				<option value="0">JNO</option>
+			</field>
+
 			<field name="articles_anywhere_enabled" type="radio" default="0"
 				label="Articles Anywhere"
 				description="Enable {article id=&quot;42&quot;}[title]{/article} content tags. Insert article data anywhere using template placeholders for title, introtext, author, category, dates, images, and more."