登録番組の定期確認を追加（24 時間ごと、予告の除外、確認エラーの記録）

internal/web/newer.go

@@ -14,8 +14,7 @@ import (
 )
 
 const (
-	previewMaxSeconds = 180
-	newerCacheTTL     = 10 * time.Minute
+	newerCacheTTL = 10 * time.Minute
 )
 
 var platformTokenPattern = regexp.MustCompile(`(?i)(platform_token=)[^&\s]+`)
@@ -137,7 +136,7 @@ func (s *server) newerView(ctx context.Context, options newerOptions) newerView
 	}
 	visible := make([]tver.Episode, 0, len(episodes))
 	for _, episode := range episodes {
-		if options.hidePreviews && episode.Duration <= previewMaxSeconds {
+		if options.hidePreviews && episode.Duration <= tver.PreviewMaxSeconds {
 			continue
 		}
 		visible = append(visible, episode)