Add product variants API, deployment scripts, and documentation

- Add Node.js variant-api server with PostgreSQL integration
- Add new utility scripts for system verification and website status
- Update CI/CD workflow configuration
- Add color variant solution documentation
- Add product variants JavaScript support
- Update gitignore for new build artifacts

variant-api/node_modules/pgpass/lib/index.js

@@ -0,0 +1,23 @@
+'use strict';
+
+var path = require('path')
+  , fs = require('fs')
+  , helper = require('./helper.js')
+;
+
+
+module.exports = function(connInfo, cb) {
+    var file = helper.getFileName();
+    
+    fs.stat(file, function(err, stat){
+        if (err || !helper.usePgPass(stat, file)) {
+            return cb(undefined);
+        }
+
+        var st = fs.createReadStream(file);
+
+        helper.getPassword(connInfo, st, cb);
+    });
+};
+
+module.exports.warnTo = helper.warnTo;