Add EckiX favicon

backend/public/favicon.svg

@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#111827" />
+      <stop offset="55%" stop-color="#0f172a" />
+      <stop offset="100%" stop-color="#1d4ed8" />
+    </linearGradient>
+    <linearGradient id="accent" x1="0" y1="0" x2="1" y2="1">
+      <stop offset="0%" stop-color="#38bdf8" />
+      <stop offset="100%" stop-color="#2563eb" />
+    </linearGradient>
+  </defs>
+  <rect width="64" height="64" rx="16" fill="url(#bg)" />
+  <path d="M16 16h22v7H24v6h13v7H24v6h14v7H16V16z" fill="#f8fafc" />
+  <path d="M39 18h9l-6.5 10L49 46h-9l-3.5-9-5.5 9h-9l10-15.5L25 18h9l3 7.8L39 18z" fill="url(#accent)" />
+</svg>

backend/public/index.html

@@ -6,6 +6,7 @@
 <title>ResMan</title>
 
 <link rel="stylesheet" href="css/style.css">
+<link rel="icon" type="image/svg+xml" href="favicon.svg">
 
 </head>