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/multer/lib/remove-uploaded-files.js

@@ -0,0 +1,28 @@
+function removeUploadedFiles (uploadedFiles, remove, cb) {
+  var length = uploadedFiles.length
+  var errors = []
+
+  if (length === 0) return cb(null, errors)
+
+  function handleFile (idx) {
+    var file = uploadedFiles[idx]
+
+    remove(file, function (err) {
+      if (err) {
+        err.file = file
+        err.field = file.fieldname
+        errors.push(err)
+      }
+
+      if (idx < length - 1) {
+        handleFile(idx + 1)
+      } else {
+        cb(null, errors)
+      }
+    })
+  }
+
+  handleFile(0)
+}
+
+module.exports = removeUploadedFiles