fix aggregation logic

internal/tasks/inventoryLifecycle.go

@@ -117,6 +117,7 @@ type snapshotTable struct {
 }
 
 func listHourlyTablesForDay(ctx context.Context, dbConn *sqlx.DB, dayStart, dayEnd time.Time) ([]snapshotTable, error) {
+	log := loggerFromCtx(ctx, nil)
 	rows, err := dbConn.QueryxContext(ctx, `
 SELECT table_name, snapshot_time, snapshot_count
 FROM snapshot_registry
@@ -139,6 +140,9 @@ ORDER BY snapshot_time ASC
 		}
 		// Trust snapshot_count if present; otherwise optimistically include to avoid long probes.
 		if t.Count.Valid && t.Count.Int64 <= 0 {
+			if log != nil {
+				log.Debug("skipping snapshot table with zero count", "table", t.Table, "snapshot_time", t.Time)
+			}
 			continue
 		}
 		tables = append(tables, t)