Add search-plus auto-loader as deferred script"

search-plus-boot.js

@@ -0,0 +1,26 @@
+<!-- This file auto-loads search-plus functionality -->
+<!-- Include via: <script src="search-plus-boot.js"></script> before </body> -->
+(function(){
+'use strict';
+// Create and inject search-plus.js
+function boot(){
+var s=document.createElement('script');
+s.src='search-plus.js';
+s.onload=function(){
+// Add magic button to search box
+var sb=document.querySelector('.search-box');
+if(!sb)return;
+var btn=document.createElement('button');
+btn.onclick=function(){if(typeof toggleSearchPlus==='function')toggleSearchPlus()};
+btn.title='Tìm kiếm Plus - AI tìm SP bên ngoài';
+btn.style.cssText='position:absolute;right:70px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:7px;background:linear-gradient(135deg,#db9815,#f0b840);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.7rem;z-index:2';
+btn.innerHTML='✨';
+sb.appendChild(btn);
+// Load saved products
+setTimeout(function(){if(typeof loadExternalProducts==='function')loadExternalProducts()},3000);
+};
+document.body.appendChild(s);
+}
+if(document.readyState==='loading')document.addEventListener('DOMContentLoaded',boot);
+else boot();
+})();