fix: address code review findings

cmd/api/handlers.go

@@ -25,7 +25,6 @@ type HandlerContext struct {
 	Redis       *redis.Client
 	Router      *routing.Graph
 	Yandex      *yandex.Client
-	SearchCache *routing.SearchCacheService
 	Preferences *cache.Preferences
 	Metrics     *metrics.Metrics
 	SearchStart time.Time
@@ -207,13 +206,14 @@ func RouteSearch(hc *HandlerContext, w http.ResponseWriter, r *http.Request) {
 		RankingMode: rankingMode,
 	}
 
-	// Determine if this is a far-term search (date is more than 7 days in the future)
+	// Determine if this is a far-term search (date is 7 or more days in the future)
 	if req.Date != "" {
 		requestDate, err := time.Parse("2006-01-02", req.Date)
 		if err == nil {
 			now := time.Now()
-			daysDiff := int(requestDate.Sub(now).Hours() / 24)
-			if daysDiff >= 7 {
+			// Check if date is 7 or more days in the future
+			sevenDaysLater := now.AddDate(0, 0, 7)
+			if !requestDate.Before(sevenDaysLater) {
 				opts.FarTerm = true
 			}
 		}
@@ -733,7 +733,6 @@ func NewHandlerContext(redisClient *redis.Client, router *routing.Graph, yandex
 		Redis:       redisClient,
 		Router:      router,
 		Yandex:      yandex,
-		SearchCache: routing.NewSearchCacheService(cacheStore, yandex, m),
 		Preferences: cache.NewPreferences(cacheStore),
 		Metrics:     m,
 		SearchStart: time.Now(),