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/jake/usage.txt

@@ -0,0 +1,17 @@
+Jake JavaScript build tool
+********************************************************************************
+If no flags are given, Jake looks for a Jakefile or Jakefile.js in the current directory.
+********************************************************************************
+{Usage}: jake [options ...] [env variables ...] target
+
+{Options}:
+  -f,      --jakefile FILE          Use FILE as the Jakefile.
+  -C,      --directory DIRECTORY    Change to DIRECTORY before running tasks.
+  -q,      --quiet                  Do not log messages to standard output.
+  -B,      --always-make            Unconditionally make all targets.
+  -T/-ls,  --tasks                  Display the tasks (matching optional PATTERN) with descriptions, then exit.
+  -J,      --jakelibdir JAKELIBDIR  Auto-import any .jake files in JAKELIBDIR. (default is \'jakelib\')
+  -h,      --help                   Display this help message.
+  -V/-v,   --version                Display the Jake version.
+  -ar,     --allow-rejection        Keep running even after unhandled promise rejection.
+