macd 추가수정

frontend/src/utils/indicatorRegistry.ts

@@ -157,6 +157,10 @@ export function mergeHlines(
       ? savedList[0]
       : undefined;
 
+  const defRoleLabels = new Set(
+    defs.map(d => d.label ?? getHLineLabel(d.price, defs.map(x => x.price))),
+  );
+
   return defs
     .map(def => {
       const wantLabel = def.label ?? getHLineLabel(def.price, defs.map(d => d.price));
@@ -172,7 +176,9 @@ export function mergeHlines(
     .concat(
       savedList.filter(h => {
         const lbl = labelOf(h);
-        return !defs.some(d => (d.label ?? getHLineLabel(d.price, defs.map(x => x.price))) === lbl);
+        if (defRoleLabels.has(lbl)) return false;
+        // registry에 없는 역할(잘못 분류된 과열/침체 orphan)은 제거 — 종가가 과열선으로 저장되는 MACD 버그 방지
+        return defRoleLabels.size > 1;
       }).map(h => ({ ...h, label: labelOf(h) })),
     )
     .sort((a, b) => b.price - a.price);
@@ -254,19 +260,64 @@ export function normalizeHLines(
 
 /** registry 기본 중앙선이 0인 지표에서 잘못 저장된 중앙선 가격을 0으로 고정 */
 function clampZeroCenterHLines(hlines: HLineDef[], defaults?: HLineDef[]): HLineDef[] {
-  const defPrices = (defaults ?? []).map(d => d.price);
-  const defCenter = (defaults ?? []).find(
+  const defs = defaults ?? [];
+  const defPrices = defs.map(d => d.price);
+  const defCenter = defs.find(
     d => (d.label ?? getHLineLabel(d.price, defPrices)) === '중앙선',
   );
   if (defCenter?.price !== 0) return hlines;
 
-  const prices = hlines.map(h => h.price);
-  return hlines.map(h => {
+  const defPriceSet = new Set(defPrices);
+  let list = hlines;
+  // MACD·AO 등 중앙 0선 단일 def — registry에 없는 가격(종가 orphan) 제거
+  if (defs.length === 1 && defs[0].price === 0) {
+    const orphanWasVisible = hlines.some(h => {
+      const prices = hlines.map(x => x.price);
+      const lbl = h.label ?? getHLineLabel(h.price, prices);
+      return lbl !== '중앙선' && h.visible !== false && !defPriceSet.has(h.price);
+    });
+    list = hlines.filter(h => {
+      const prices = hlines.map(x => x.price);
+      const lbl = h.label ?? getHLineLabel(h.price, prices);
+      if (lbl === '중앙선') return true;
+      return defPriceSet.has(h.price);
+    });
+    if (orphanWasVisible) {
+      list = list.map(h => {
+        const prices = list.map(x => x.price);
+        const lbl = h.label ?? getHLineLabel(h.price, prices);
+        return lbl === '중앙선' ? { ...h, visible: true } : h;
+      });
+    }
+  }
+
+  const prices = list.map(h => h.price);
+  return list.map(h => {
     const lbl = h.label ?? getHLineLabel(h.price, prices);
     return lbl === '중앙선' ? { ...h, price: 0 } : h;
   });
 }
 
+/** 차트 draw 시 hline 실제 가격 — 중앙 0선 지표는 항상 0 */
+export function resolveHLineDrawPrice(
+  indicatorType: string,
+  hl: HLineDef,
+  allHlines: HLineDef[],
+): number {
+  const def = getIndicatorDef(indicatorType);
+  const defaults = def?.hlines ?? [];
+  const defPrices = defaults.map(d => d.price);
+  const prices = allHlines.map(h => h.price);
+  const lbl = hl.label ?? getHLineLabel(hl.price, prices);
+  const defCenter = defaults.find(
+    d => (d.label ?? getHLineLabel(d.price, defPrices)) === '중앙선',
+  );
+  if (lbl === '중앙선' && defCenter?.price === 0) {
+    return 0;
+  }
+  return hl.price;
+}
+
 export interface IndicatorDef {
   type: string;
   name: string;