feat: enhance JSON serialization safety & add dxt upload limit (#230)

frontend/src/constants/permissions.ts

@@ -0,0 +1,9 @@
+// Predefined permission constants
+export const PERMISSIONS = {
+  // Settings page permissions
+  SETTINGS_SMART_ROUTING: 'settings:smart_routing',
+  SETTINGS_SKIP_AUTH: 'settings:skip_auth',
+  SETTINGS_INSTALL_CONFIG: 'settings:install_config',
+} as const;
+
+export default PERMISSIONS;