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/gauge/base-theme.js

@@ -0,0 +1,14 @@
+'use strict'
+var spin = require('./spin.js')
+var progressBar = require('./progress-bar.js')
+
+module.exports = {
+  activityIndicator: function (values, theme, width) {
+    if (values.spun == null) return
+    return spin(theme, values.spun)
+  },
+  progressbar: function (values, theme, width) {
+    if (values.completed == null) return
+    return progressBar(theme, width, values.completed)
+  }
+}