feat(frontend,backend): simple navigation bar added

templates/benchmark.html

@@ -0,0 +1,23 @@
+{% extends "base.html" %}
+
+{% block title %}Benchmark{% endblock %}
+
+{% block content %}
+<div class="row">
+    <div class="col-12">
+        <h2>Benchmark</h2>
+        <p class="text-muted">Configure and run disk benchmarks.</p>
+        
+        <!-- Placeholder content - will be implemented later -->
+        <div class="card">
+            <div class="card-body">
+                <h5 class="card-title">Select Drive</h5>
+                <p class="card-text">Choose a drive to benchmark from the list below.</p>
+                
+                <!-- Drive selection will go here -->
+                <div id="drive-selector"></div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}