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/isSemVer.js

@@ -0,0 +1,22 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = isSemVer;
+var _assertString = _interopRequireDefault(require("./util/assertString"));
+var _multilineRegex = _interopRequireDefault(require("./util/multilineRegex"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+/**
+ * Regular Expression to match
+ * semantic versioning (SemVer)
+ * built from multi-line, multi-parts regexp
+ * Reference: https://semver.org/
+ */
+var semanticVersioningRegex = (0, _multilineRegex.default)(['^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)', '(?:-((?:0|[1-9]\\d*|\\d*[a-z-][0-9a-z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-z-][0-9a-z-]*))*))', '?(?:\\+([0-9a-z-]+(?:\\.[0-9a-z-]+)*))?$'], 'i');
+function isSemVer(str) {
+  (0, _assertString.default)(str);
+  return semanticVersioningRegex.test(str);
+}
+module.exports = exports.default;
+module.exports.default = exports.default;