전략 시간봉 오류 수정

backend/src/main/java/com/goldenchart/service/StrategyTriggerBranchEvaluator.java

@@ -100,9 +100,35 @@ public class StrategyTriggerBranchEvaluator {
             }
         }
 
+        JsonNode wrapped = findTimeframeWrapper(node);
+        if (wrapped != null) {
+            String ct = LiveStrategyTimeframeService.normalize(wrapped.path("candleType").asText("1m"));
+            JsonNode sub = firstChild(wrapped);
+            return new BranchScope("SINGLE", List.of(new BranchDef(ct, sub != null && !sub.isNull() ? sub : node)));
+        }
+
         return new BranchScope("SINGLE", List.of(new BranchDef("1m", node)));
     }
 
+    /** 레거시 DSL — 루트가 TIMEFRAME이 아닐 때 하위 TIMEFRAME 래퍼 탐색 */
+    private static JsonNode findTimeframeWrapper(JsonNode node) {
+        if (node == null || node.isNull()) return null;
+        if ("TIMEFRAME".equals(node.path("type").asText(""))) return node;
+
+        JsonNode children = node.path("children");
+        if (children.isArray()) {
+            for (JsonNode child : children) {
+                JsonNode found = findTimeframeWrapper(child);
+                if (found != null) return found;
+            }
+        }
+        JsonNode child = node.path("child");
+        if (!child.isMissingNode() && !child.isNull()) {
+            return findTimeframeWrapper(child);
+        }
+        return null;
+    }
+
     private static JsonNode firstChild(JsonNode timeframeNode) {
         JsonNode children = timeframeNode.path("children");
         if (children.isArray() && !children.isEmpty()) return children.get(0);