주가 표시형식 수정

frontend/src/components/DrawingCanvas.tsx

@@ -2,6 +2,7 @@ import React, { useRef, useEffect, useCallback, useState } from 'react';
 import type { ChartManager } from '../utils/ChartManager';
 import type { Drawing, DrawingPoint, DrawingToolId, Theme } from '../types';
 import { formatUnixDateTime } from '../utils/timezone';
+import { formatUpbitKrwPrice } from '../utils/safeFormat';
 
 // ─── Hit-test ──────────────────────────────────────────────────────────────
 const HIT_RADIUS = 7; // px (CSS 좌표)
@@ -1088,7 +1089,7 @@ function renderInfoLine(ctx: CanvasRenderingContext2D, d: Drawing, m: ChartManag
   ctx.strokeStyle = d.color; ctx.lineWidth = d.lineWidth ?? 1;
   ctx.beginPath(); ctx.moveTo(0, y); ctx.lineTo(cssW, y); ctx.stroke();
   const price = d.points[0].price;
-  const label = price >= 1000 ? price.toLocaleString('ko-KR') : price.toFixed(4);
+  const label = formatUpbitKrwPrice(price);
   ctx.font = 'bold 10px sans-serif';
   const tw = ctx.measureText(label).width + 8;
   ctx.fillStyle = d.color;