추세검색 설정 수정

backend/src/main/resources/application.yml

@@ -90,6 +90,11 @@ goldenchart:
       stale-tick-seconds: 30
       gap-backfill-cron: "0 */5 * * * *"
       gap-backfill-candle-count: 20
+  trend-search:
+    scheduler:
+      enabled: true
+      tick-ms: 1000
+      queue-capacity: 16
   cors:
     allowed-origins:
       - http://localhost:5173

backend/src/main/resources/db/migration/V35__trend_search_snapshot.sql

@@ -0,0 +1,11 @@
+-- 추세검색 스캔 결과 스냅샷 (백엔드 스케줄러·수동 스캔 공통)
+CREATE TABLE gc_trend_search_snapshot (
+    scope_key    VARCHAR(128)  NOT NULL PRIMARY KEY,
+    user_id      BIGINT        NULL,
+    device_id    VARCHAR(100)  NULL,
+    timeframe    VARCHAR(16)   NOT NULL,
+    scanned_at   TIMESTAMP(3)  NOT NULL,
+    request_json JSON          NULL,
+    results_json JSON          NOT NULL,
+    INDEX idx_trend_snapshot_scanned (scanned_at)
+);