fix: gear toggle, shortcut sync, and chart scale interaction

js/ui/chart.js

@@ -498,6 +498,10 @@ constructor() {
         });
     }
     
+    initPriceScaleControls() {
+        const btnSettings = document.getElementById('btnSettings');
+        const settingsPopup = document.getElementById('settingsPopup');
+        
         // Settings Popup Toggle and Outside Click
         if (btnSettings && settingsPopup) {
             btnSettings.addEventListener('click', (e) => {
@@ -567,6 +571,7 @@ constructor() {
                 window.setScaleMode(newMode);
             }
         });
+    }
     
     initNavigationControls() {
         const chartWrapper = document.getElementById('chartWrapper');