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/lodash/divide.js

@@ -0,0 +1,22 @@
+var createMathOperation = require('./_createMathOperation');
+
+/**
+ * Divide two numbers.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.7.0
+ * @category Math
+ * @param {number} dividend The first number in a division.
+ * @param {number} divisor The second number in a division.
+ * @returns {number} Returns the quotient.
+ * @example
+ *
+ * _.divide(6, 4);
+ * // => 1.5
+ */
+var divide = createMathOperation(function(dividend, divisor) {
+  return dividend / divisor;
+}, 1);
+
+module.exports = divide;