Fix: Change datetime format in Indicator Analysis panel

- Changed date format to DD/MM/YY HH:mm format
- Removed 'Last: ' prefix from signal display
- Added formatDate() helper function for consistent formatting

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

@@ -1,6 +1,16 @@
 import { INTERVALS, COLORS } from '../core/index.js';
 import { calculateAllIndicatorSignals, calculateSummarySignal } from './signals-calculator.js';
 
+function formatDate(timestamp) {
+    const date = new Date(timestamp);
+    const day = String(date.getDate()).padStart(2, '0');
+    const month = String(date.getMonth() + 1).padStart(2, '0');
+    const year = String(date.getFullYear()).slice(-2);
+    const hours = String(date.getHours()).padStart(2, '0');
+    const minutes = String(date.getMinutes()).padStart(2, '0');
+    return `${day}/${month}/${year} ${hours}:${minutes}`;
+}
+
 export class TradingDashboard {
 constructor() {
         this.chart = null;
@@ -563,14 +573,14 @@ renderTA() {
 const signalsHtml = this.indicatorSignals?.length > 0 ? this.indicatorSignals.map(indSignal => {
             const signalIcon = indSignal.signal === 'buy' ? '🟢' : indSignal.signal === 'sell' ? '🔴' : '⚪';
             const signalColor = indSignal.signal === 'buy' ? '#26a69a' : indSignal.signal === 'sell' ? '#ef5350' : '#787b86';
-            const lastSignalDate = indSignal.lastSignalDate ? new Date(indSignal.lastSignalDate * 1000).toLocaleDateString() : '-';
+            const lastSignalDate = indSignal.lastSignalDate ? formatDate(indSignal.lastSignalDate * 1000) : '-';
             
             return `
                 <div class="ta-ma-row" style="border-bottom: none; padding: 6px 0; align-items: center;">
                     <span class="ta-ma-label">${indSignal.name}</span>
                     <span class="ta-ma-value" style="display: flex; align-items: center; gap: 8px;">
                         <span style="font-size: 11px; padding: 2px 8px; min-width: 60px; text-align: center; background: ${signalColor}; color: white; border-radius: 3px;">${signalIcon} ${indSignal.signal.toUpperCase()}</span>
-                        <span style="font-size: 10px; color: var(--tv-text-secondary);">Last: ${lastSignalDate}</span>
+                        <span style="font-size: 10px; color: var(--tv-text-secondary);">${lastSignalDate}</span>
                     </span>
                 </div>
             `;