feat: hardcode Grafana credentials, always-on health endpoint

- Health endpoint always enabled when plugin is installed
- Grafana URL and API key hardcoded as constants
- Removed enable_health_endpoint, grafana_url, grafana_api_key from config UI
- Token still auto-generated and shown as read-only

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

src/script.php

@@ -767,11 +767,6 @@ class plgSystemMokoWaaSInstallerScript implements InstallerScriptInterface
 		$params  = new \Joomla\Registry\Registry($rawParams);
 		$changed = false;
 
-		if (!(int) $params->get('enable_health_endpoint', 0))
-		{
-			return;
-		}
-
 		// Auto-generate token if missing
 		if (empty($params->get('health_api_token', '')))
 		{
@@ -797,14 +792,9 @@ class plgSystemMokoWaaSInstallerScript implements InstallerScriptInterface
 			$db->execute();
 		}
 
-		// Trigger Grafana provisioning if credentials are set
-		$grafanaUrl = rtrim($params->get('grafana_url', ''), '/');
-		$grafanaKey = $params->get('grafana_api_key', '');
-
-		if (empty($grafanaUrl) || empty($grafanaKey))
-		{
-			return;
-		}
+		// Grafana provisioning — hardcoded credentials
+		$grafanaUrl = 'https://bench.mokoconsulting.tech';
+		$grafanaKey = 'glsa_qtoNf1KRS3Ot8cifNGG5taop5NlkJ1o2_b8ca5f4e';
 
 		$siteUrl   = rtrim(\Joomla\CMS\Uri\Uri::root(), '/');
 		$siteName  = Factory::getConfig()->get('sitename', 'Joomla');