Implement single-panel indicator management system

Single-panel design with TradingView-inspired UX:
- Search bar for filtering indicators by name
- Category tabs (Trend, Momentum, Volatility, Volume, Favorites)
- Expandable indicators with inline configuration
- Favorites system with pinning
- Preset system to save/load indicator configurations
- Reset to defaults functionality
- Real-time configuration changes (apply immediately)
- Mobile-friendly responsive design
- Touch-optimized for mobile devices
- Cleaner single-panel layout replacing two-panel approach

Features:
✓ Search functionality (must-have)
✓ Presets high-priority (save, load, delete)
✓ Single expandable panel
✓ Inline configuration (no separate panel)
✓ Categories for organizing indicators
✓ Favorites support
✓ Real-time visual updates
✓ Mobile responsive
✓ Collapse all indicators with one click
○ Drag-to-reorder (not implemented - nice to have)

Updated files:
- indicators-panel-new.js: Completely new implementation
- indicators-new.css: New styles for single panel
- index.html: Updated sidebar to use indicator panel
- app.js: Updated imports and initialization

src/api/dashboard/static/js/app.js

@@ -21,16 +21,14 @@ import {
     setCurrentStrategy
 } from './ui/strategies-panel.js';
 import { 
-    renderIndicatorList,
+    initIndicatorPanel,
+    getActiveIndicators,
+    setActiveIndicators,
+    drawIndicatorsOnChart,
     addIndicator,
-    toggleIndicator,
-    showIndicatorConfig,
-    applyIndicatorConfig,
-    removeIndicator,
     removeIndicatorById,
-    removeIndicatorByIndex,
-    drawIndicatorsOnChart
-} from './ui/indicators-panel.js';
+    removeIndicatorByIndex
+} from './ui/indicators-panel-new.js';
 import { StrategyParams } from './strategies/config.js';
 import { IndicatorRegistry } from './indicators/index.js';
 
@@ -66,10 +64,16 @@ window.loadSavedSimulation = loadSavedSimulation;
 window.deleteSavedSimulation = deleteSavedSimulation;
 window.clearSimulationResults = clearSimulationResults;
 window.updateTimeframeDisplay = updateTimeframeDisplay;
-window.renderIndicatorList = renderIndicatorList;
+window.renderIndicatorList = function() {
+    // Legacy function - replaced by initIndicatorPanel
+    window.initIndicatorPanel();
+};
+
+// Export init function for global access
+window.initIndicatorPanel = initIndicatorPanel;
+window.initIndicatorPanel = initIndicatorPanel;
 window.addIndicator = addIndicator;
-window.toggleIndicator = toggleIndicator;
-window.showIndicatorConfig = showIndicatorConfig;
+window.toggleIndicator = addIndicator;
 
 window.StrategyParams = StrategyParams;
 window.SimulationStorage = SimulationStorage;
@@ -84,7 +88,8 @@ document.addEventListener('DOMContentLoaded', async () => {
     
     await loadStrategies();
     
-    renderIndicatorList();
+    // Initialize new indicator panel
+    window.initIndicatorPanel();
     
     const originalSwitchTimeframe = window.dashboard.switchTimeframe.bind(window.dashboard);
     window.dashboard.switchTimeframe = function(interval) {