feat: Add Reasoning Trace HUD Component

Closes #875

- Added new ReasoningTrace component for real-time reasoning visualization
- Shows agent's reasoning steps during complex task execution
- Supports step types: THINK, DECIDE, RECALL, PLAN, EXECUTE, VERIFY, DOUBT, MEMORY
- Includes confidence visualization, task tracking, and export functionality
- Integrated into existing GOFAI HUD system

index.html

@@ -101,6 +101,19 @@
       <div class="panel-header">ADAPTIVE CALIBRATOR</div>
       <div id="calibrator-log-content" class="panel-content"></div>
     </div>
+    <div class="hud-panel" id="reasoning-trace">
+      <div class="trace-header-container">
+        <div class="panel-header"><span class="trace-icon">🧠</span> REASONING TRACE</div>
+        <div class="trace-controls">
+          <button class="trace-btn" id="trace-clear" title="Clear trace">🗑️</button>
+          <button class="trace-btn" id="trace-toggle" title="Toggle visibility">👁️</button>
+          <button class="trace-btn" id="trace-export" title="Export trace">📤</button>
+        </div>
+      </div>
+      <div class="trace-task" id="trace-task">No active task</div>
+      <div class="trace-counter" id="trace-counter">0 steps</div>
+      <div id="reasoning-trace-content" class="panel-content trace-content"></div>
+    </div>
   </div>
 
   <!-- Evennia Room Snapshot Panel -->