feat: update HTML structure and add version display in the navbar

html/header.html

@@ -12,7 +12,7 @@
         <div style="display: flex; align-items: center; gap: 2rem;">
             <img src="/logo.png" alt="FilaMan Logo" class="logo">
             <div class="logo-text">
-                <h1>FilaMan</h1>
+                <h1>FilaMan<span class="version">v1.0.2</span></h1>
                 <h4>Filament Management Tool</h4>
             </div>
         </div>
@@ -32,3 +32,4 @@
             <div class="ram-status" id="ramStatus"></div>
         </div>
     </div>
+