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/isDecimal.js

@@ -0,0 +1,31 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = isDecimal;
+var _merge = _interopRequireDefault(require("./util/merge"));
+var _assertString = _interopRequireDefault(require("./util/assertString"));
+var _includesArray = _interopRequireDefault(require("./util/includesArray"));
+var _alpha = require("./alpha");
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+function decimalRegExp(options) {
+  var regExp = new RegExp("^[-+]?([0-9]+)?(\\".concat(_alpha.decimal[options.locale], "[0-9]{").concat(options.decimal_digits, "})").concat(options.force_decimal ? '' : '?', "$"));
+  return regExp;
+}
+var default_decimal_options = {
+  force_decimal: false,
+  decimal_digits: '1,',
+  locale: 'en-US'
+};
+var blacklist = ['', '-', '+'];
+function isDecimal(str, options) {
+  (0, _assertString.default)(str);
+  options = (0, _merge.default)(options, default_decimal_options);
+  if (options.locale in _alpha.decimal) {
+    return !(0, _includesArray.default)(blacklist, str.replace(/ /g, '')) && decimalRegExp(options).test(str);
+  }
+  throw new Error("Invalid locale '".concat(options.locale, "'"));
+}
+module.exports = exports.default;
+module.exports.default = exports.default;