fix(settings): resolve ReferenceError and add detailed persistence logs

src/app/(dashboard)/settings/page.tsx

@@ -90,10 +90,6 @@ export default function SettingsPage() {
         }
     }, []);
 
-    if (!isMounted) {
-        return null;
-    }
-
     const reloadFromServer = async () => {
         const config = await getSavedDatabaseConfig();
         if (config) {
@@ -147,6 +143,10 @@ export default function SettingsPage() {
         }
     };
 
+    if (!isMounted) {
+        return null;
+    }
+
     return (
         <div className="space-y-6 max-w-xl">
             <div>