Fix: Prevent indicators from being deleted during TF switch

- Remove window.renderIndicatorList() call from renderTA()
- This was triggering initIndicatorPanel during each TF switch
- Added logging to removeIndicatorById to track unexpected deletions
- Removed indicator configuration UI from TA panel (sidebar handles this now)

src/api/dashboard/static/js/ui/chart.js

@@ -499,7 +499,7 @@ async loadTA() {
         }
     }
     
-    renderTA() {
+renderTA() {
         if (!this.taData || this.taData.error) {
             document.getElementById('taContent').innerHTML = `<div class="ta-error">${this.taData?.error || 'No data available'}</div>`;
             return;
@@ -542,23 +542,7 @@ async loadTA() {
                     </span>
                 </div>
             </div>
-            
-            <div class="ta-section">
-                <div class="ta-section-title">Indicators</div>
-                <div id="indicatorList" class="indicator-list"></div>
-            </div>
-            
-            <div class="ta-section" id="indicatorConfigPanel">
-                <div class="ta-section-title">Configuration</div>
-                <div id="configForm" style="margin-top: 8px;"></div>
-                <div style="display: flex; gap: 8px; margin-top: 12px;" id="configButtons">
-                    <button class="ta-btn" onclick="applyIndicatorConfig()" style="flex: 1; font-size: 11px; background: var(--tv-blue); color: white; border: none;">Apply</button>
-                    <button class="ta-btn" onclick="removeIndicator()" style="flex: 1; font-size: 11px; border-color: var(--tv-red); color: var(--tv-red);">Remove</button>
-                </div>
-            </div>
         `;
-        
-        window.renderIndicatorList?.();
     }
     
     async loadStats() {