Add ?country=SA query param override for geo-pricing testing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

public/js/main.js

@@ -81,12 +81,17 @@ document.addEventListener('DOMContentLoaded', () => {
   injectRevealStyles();
   injectDynamicStyles();
 
-  // Detect country and apply geo-pricing
-  detectCountry().then(country => {
-    if (country !== 'EG') {
-      applyGeoPricing(country);
-    }
-  });
+  // Detect country and apply geo-pricing (?country=SA override for testing)
+  const urlCountry = new URLSearchParams(window.location.search).get('country');
+  if (urlCountry) {
+    applyGeoPricing(urlCountry.toUpperCase());
+  } else {
+    detectCountry().then(country => {
+      if (country !== 'EG') {
+        applyGeoPricing(country);
+      }
+    });
+  }
 });
 
 /* ═══════════════════════════════════════════════