feat: add favicon assets and update html icon references with cache busting

index.html

@@ -2,9 +2,11 @@
 <html lang="en" data-theme="light" class="theme-light">
   <head>
     <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
-    <link rel="alternate icon" type="image/png" href="/favicon.png" />
-    <link rel="shortcut icon" href="/favicon.ico" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg?v=2" />
+    <link rel="icon" type="image/png" sizes="32x32" href="/favicon.png?v=2" />
+    <link rel="icon" type="image/png" sizes="16x16" href="/favicon.png?v=2" />
+    <link rel="shortcut icon" href="/favicon.ico?v=2" />
+    <link rel="apple-touch-icon" href="/favicon.png?v=2" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>TRADHOX — Artisan Heritage Marketplace | Seller Central</title>
     <meta name="description" content="India's Premier Artisan & Handcrafted Marketplace. Sell Authentic Handcrafted Products Across India & Worldwide." />