Website restoration: Node.js backend, restored design, GitHub sync disabled

- Replaced broken .NET backend with Node.js/Express
- Restored original website design with purple gradient hero
- Updated homepage and shop pages with Bootstrap 5 responsive design
- Disabled GitHub remote sync - all code now stored locally only
- Created backup scripts and documentation
- All changes saved on Ubuntu server at /var/www/SkyArtShop

backend/node_modules/validator/lib/isByteLength.js

@@ -0,0 +1,27 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = isByteLength;
+var _assertString = _interopRequireDefault(require("./util/assertString"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
+/* eslint-disable prefer-rest-params */
+function isByteLength(str, options) {
+  (0, _assertString.default)(str);
+  var min;
+  var max;
+  if (_typeof(options) === 'object') {
+    min = options.min || 0;
+    max = options.max;
+  } else {
+    // backwards compatibility: isByteLength(str, min [, max])
+    min = arguments[1];
+    max = arguments[2];
+  }
+  var len = encodeURI(str).split(/%..|./).length - 1;
+  return len >= min && (typeof max === 'undefined' || len <= max);
+}
+module.exports = exports.default;
+module.exports.default = exports.default;