fix: move handleSiteAlias() to onAfterInitialise for offline timing

The alias offline parameter was not working because handleSiteAlias()
ran in onAfterRoute(), but Joomla's SiteApplication::doExecute() checks
the offline config before that event fires. Moving it to
onAfterInitialise() ensures the config is set before Joomla's check.

Fixes #72

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

src/packages/plg_system_mokowaas/Extension/MokoWaaS.php

@@ -162,6 +162,11 @@ class MokoWaaS extends CMSPlugin implements BootableExtensionInterface
 		// Security: HTTPS redirect (runs for all clients)
 		$this->enforceHttps();
 
+		// Site alias handling: offline page and backend redirect.
+		// Must run in onAfterInitialise (not onAfterRoute) so that
+		// Joomla's offline check in doExecute() sees the updated config.
+		$this->handleSiteAlias();
+
 		// MokoWaaS API endpoints (run before routing)
 		$mokoAction = $this->app->input->get('mokowaas', '');
 
@@ -926,9 +931,6 @@ class MokoWaaS extends CMSPlugin implements BootableExtensionInterface
 	 */
 	public function onAfterRoute()
 	{
-		// Site alias handling: offline page and backend redirect
-		$this->handleSiteAlias();
-
 		if (!$this->app->isClient('administrator'))
 		{
 			return;
@@ -3081,7 +3083,8 @@ class MokoWaaS extends CMSPlugin implements BootableExtensionInterface
 	/**
 	 * Handle site alias logic: offline page and backend redirect.
 	 *
-	 * Runs early in onAfterInitialise before routing occurs.
+	 * Runs in onAfterInitialise so that Joomla's offline check in
+	 * SiteApplication::doExecute() sees the updated config value.
 	 *
 	 * @return  void
 	 *