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/semver/ranges/to-comparators.js

@@ -0,0 +1,10 @@
+'use strict'
+
+const Range = require('../classes/range')
+
+// Mostly just for testing and legacy API reasons
+const toComparators = (range, options) =>
+  new Range(range, options).set
+    .map(comp => comp.map(c => c.value).join(' ').trim().split(' '))
+
+module.exports = toComparators