추세검색 설정 수정

backend/src/main/java/com/goldenchart/dto/TrendSearchResultsResponse.java

@@ -0,0 +1,26 @@
+package com.goldenchart.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.time.Instant;
+import java.util.Collections;
+import java.util.List;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class TrendSearchResultsResponse {
+    private List<TrendSearchResultDto> results;
+    private String timeframe;
+    private Instant scannedAt;
+
+    public static TrendSearchResultsResponse empty() {
+        return TrendSearchResultsResponse.builder()
+                .results(Collections.emptyList())
+                .build();
+    }
+}