전략편집기 템플릿 삭제 기능 추가

frontend/src/utils/strategyImportExport.ts

@@ -189,6 +189,7 @@ export function listImportItemToStrategyDto(item: StrategyListExportItem, id: nu
     description: item.description,
     buyCondition: item.buyCondition ?? null,
     sellCondition: item.sellCondition ?? null,
+    flowLayout: item.flowLayout,
     enabled: item.enabled ?? true,
     createdAt: now,
     updatedAt: now,

frontend/src/utils/strategyPresets.ts

@@ -24,6 +24,12 @@ export type CompositeStrategyTemplate = {
 
 export type StrategyTemplateDef = SimpleStrategyTemplate | CompositeStrategyTemplate;
 
+/** 내장 템플릿 숨김·복원용 안정 ID */
+export function getBuiltinTemplateId(tmpl: StrategyTemplateDef): string {
+  const slug = tmpl.label.trim().replace(/\s+/g, '_');
+  return `builtin:${tmpl.signal}:${slug}`;
+}
+
 function condition(
   indicatorType: string,
   conditionType: string,

frontend/src/utils/strategyTemplateStorage.ts

@@ -64,3 +64,17 @@ export function deleteUserStrategyTemplate(id: string): UserStrategyTemplate[] {
   saveUserStrategyTemplates(templates);
   return templates;
 }
+
+export function loadHiddenBuiltinTemplateIds(): string[] {
+  const raw = getUiPreferences().strategyEditor?.hiddenBuiltinTemplateIds;
+  if (!Array.isArray(raw)) return [];
+  return raw.filter((id): id is string => typeof id === 'string' && id.length > 0);
+}
+
+export function hideBuiltinTemplate(id: string): string[] {
+  const hidden = loadHiddenBuiltinTemplateIds();
+  if (hidden.includes(id)) return hidden;
+  const next = [...hidden, id];
+  patchUiPreferences({ strategyEditor: { hiddenBuiltinTemplateIds: next } });
+  return next;
+}