✨ Remove header text and reduce padding for ultra-minimal design

- Remove 'System Performance' title and description text
- Reduce container padding from 20px to 15px
- Achieve cleaner, skinnier layout focusing purely on data
- Following Tufte principle: remove every non-data pixel

Author: raold

static/dashboard.html

@@ -136,7 +136,7 @@
         .metrics-compact {
             background: var(--bg1);
             border-radius: 12px;
-            padding: 20px;
+            padding: 15px;
             margin-bottom: 30px;
             border: 1px solid var(--bg2);
         }
@@ -192,7 +192,7 @@
         .metric-value {
             color: var(--yellow);
             font-weight: 700;
-            font-size: 1.1rem;
+            font-size: 0.95rem;
             text-align: right;
         }
 
@@ -1680,9 +1680,6 @@ <h2>🧠 Production AI Memory System Performance</h2>
 
         <!-- System Performance Metrics - Tufte-inspired Compact Design -->
         <div class="metrics-compact">
-            <h2><i class="fas fa-tachometer-alt"></i> System Performance</h2>
-            <p>Real-time operational metrics with trend analysis</p>
-            
             <div class="metrics-grid-compact">
                 <!-- Row 1: Latency & Throughput -->
                 <div class="metric-row">