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

@@ -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() {

src/api/dashboard/static/js/ui/indicators-panel-new.js

@@ -496,15 +496,26 @@ window.clearAllIndicators = function() {
 }
 
 function removeIndicatorById(id) {
+    console.log(`[removeIndicatorById] Attempting to remove indicator: ${id}`);
+    console.log('Call stack:', console.trace());
+    
     const idx = activeIndicators.findIndex(a => a.id === id);
-    if (idx < 0) return;
+    if (idx < 0) {
+        console.warn(`[removeIndicatorById] Indicator ${id} not found in array`);
+        return;
+    }
+    
+    console.log(`[removeIndicatorById] Removing indicator at index ${idx}`);
     
     activeIndicators[idx].series?.forEach(s => {
         try { window.dashboard?.chart?.removeSeries(s); } catch(e) {}
     });
     
+    // Remove the specific indicator, don't clear the whole array
     activeIndicators.splice(idx, 1);
     
+    console.log(`[removeIndicatorById] After removal, array now has ${activeIndicators.length} indicators`);
+    
     if (configuringId === id) {
         configuringId = null;
     }
@@ -794,6 +805,12 @@ export function drawIndicatorsOnChart() {
         return;
     }
     
+    if (activeIndicators.length === 0) {
+        console.error('⚠️ drawIndicatorsOnChart: activeIndicators is EMPTY!');
+        console.error('⚠️ This means indicators were lost during TF switch!');
+        console.trace('Call stack showing where we are:');
+    }
+    
     const currentInterval = window.dashboard.currentInterval;
     const candles = window.dashboard.allData.get(currentInterval);