fix: market drawing tools overlay alignment and pointer handling

Co-authored-by: Cursor <cursoragent@cursor.com>

manual_trading_hub/static/chart.js

@@ -247,6 +247,9 @@
       mainEl: elChartMain,
       canvasEl: elDrawCanvas,
       toolbarEl: elDrawToolbar,
+      getCandles: function () {
+        return lastCandles;
+      },
     });
     window.HubChartDraw.setViewKey(currentChartViewKey());
     drawAttached = true;