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/connect-pg-simple/table.sql

@@ -0,0 +1,10 @@
+CREATE TABLE "session" (
+  "sid" varchar NOT NULL COLLATE "default",
+  "sess" json NOT NULL,
+  "expire" timestamp(6) NOT NULL
+)
+WITH (OIDS=FALSE);
+
+ALTER TABLE "session" ADD CONSTRAINT "session_pkey" PRIMARY KEY ("sid") NOT DEFERRABLE INITIALLY IMMEDIATE;
+
+CREATE INDEX "IDX_session_expire" ON "session" ("expire");