feat: redirect admin Help menu to configured support URL

Replaces hardcoded help.joomla.org and docs.joomla.org links in
the Atum template header with the WaaS support URL from plugin
config. Uses JS injection in onBeforeCompileHead.

Authored-by: Moko Consulting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -37,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Alias offline bypass: aliases with offline=No override Joomla's global offline setting, allowing access via alias domain while main site is down
 - Block non-master users from viewing or editing MokoWaaS plugin settings
 - Master user bypasses ALL tenant restrictions (install from URL, global config, sysinfo, installer, templates)
+- Admin Help menu redirected to configured support URL (replaces help.joomla.org)
 
 ### Fixed
 - Install API endpoint: extract ZIP to temp directory before passing to Joomla Installer (was passing ZIP path directly)

src/packages/plg_system_mokowaas/Extension/MokoWaaS.php

@@ -936,6 +936,7 @@ class MokoWaaS extends CMSPlugin
 		}
 
 		$this->injectFavicon($doc);
+		$this->redirectHelpMenu($doc);
 
 		// Hide MokoWaaS from plugin list for non-master users
 		if (!$this->isMasterUser())
@@ -975,6 +976,32 @@ class MokoWaaS extends CMSPlugin
 		");
 	}
 
+	/**
+	 * Redirect the admin Help menu link to the configured support URL.
+	 *
+	 * Joomla's Atum template hardcodes the Help link to help.joomla.org.
+	 * This replaces it with the WaaS support URL via JS injection.
+	 *
+	 * @param   \Joomla\CMS\Document\HtmlDocument  $doc  Document object
+	 *
+	 * @return  void
+	 *
+	 * @since   02.10.00
+	 */
+	protected function redirectHelpMenu($doc)
+	{
+		$supportUrl = $this->params->get('support_url', 'https://mokoconsulting.tech');
+
+		$doc->addScriptDeclaration("
+			document.addEventListener('DOMContentLoaded', function() {
+				document.querySelectorAll('a[href*=\"help.joomla.org\"], a[href*=\"docs.joomla.org\"]').forEach(function(link) {
+					link.href = " . json_encode($supportUrl) . ";
+					link.target = '_blank';
+				});
+			});
+		");
+	}
+
 	/**
 	 * Protect the plugin from being disabled or uninstalled by non-master users.
 	 * Does NOT self-heal (no lock) — master users can still disable if needed.