using HLL for all counts to avoid duplicates

pkg/pipe/pipe_test.go

@@ -7,6 +7,8 @@ import (
 	"time"
 
 	"github.com/nbd-wtf/go-nostr"
+	"github.com/redis/go-redis/v9"
+	"github.com/vertex-lab/crawler_v2/pkg/redb"
 )
 
 var (
@@ -56,3 +58,15 @@ func TestFetch(t *testing.T) {
 		t.Fatalf("expected %d events, got %d", expected, len(events))
 	}
 }
+
+// Manually check on a test database
+func TestFinalizeStats(t *testing.T) {
+	db := redb.New(&redis.Options{
+		Addr: "localhost:6379",
+	})
+
+	err := finalizeStats(db, "2025-09-15")
+	if err != nil {
+		t.Fatalf("expected nil, got %v", err)
+	}
+}