diff --git a/src/includes/shell_exec.php b/src/includes/shell_exec.php
index b967b59..06b1ab4 100644
--- a/src/includes/shell_exec.php
+++ b/src/includes/shell_exec.php
@@ -17,7 +17,7 @@ if ($cmd === '') {
 }
 
 // Restrict dangerous commands for safety
-$blacklist = ['rm', 'shutdown', 'reboot', 'passwd', 'dd', ':(){'];
+$blacklist = $CONFIG['blacklist_commands'];
 foreach ($blacklist as $bad) {
     if (stripos($cmd, $bad) !== false) {
         echo json_encode(['output' => "⚠️ Command '$bad' not allowed"]);
@@ -30,7 +30,7 @@ $descriptor = [
     1 => ['pipe', 'w'],
     2 => ['pipe', 'w']
 ];
-$process = proc_open($cmd, $descriptor, $pipes, '/home');
+$process = proc_open($cmd, $descriptor, $pipes, $CONFIG['default_dir']);
 if (is_resource($process)) {
     $output = stream_get_contents($pipes[1]);
     $error  = stream_get_contents($pipes[2]);
diff --git a/src/js/app.js b/src/js/app.js
index 28ef086..c6a69f1 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -68,7 +68,7 @@ document.addEventListener('DOMContentLoaded', () => {
     });
 
     await checkAdmin();
-    setInterval(checkAdmin, 30000);
+    setInterval(checkAdmin, CONFIG.index_admin_status_update_interval);
   })();
 
   // --- Page loader ---
diff --git a/src/js/home.js b/src/js/home.js
index 2035871..743efe9 100644
--- a/src/js/home.js
+++ b/src/js/home.js
@@ -60,9 +60,9 @@ document.addEventListener('page-loaded', e => {
         }
 
         // Color thresholds
-        if (numVal >= 85) {
+        if (numVal >= CONFIG.home_chart_color_threshold_high) {
           elements[key].className = 'high';
-        } else if (numVal >= 75) {
+        } else if (numVal >= CONFIG.home_chart_color_threshold_medium) {
           elements[key].className = 'medium';
         } else {
           elements[key].className = 'low';