That is not my understanding of the historical record, and I don't think it's the understanding of the US, French, or German leaders at the time either. The 2008 agenda report states "NATO welcomes Ukraine’s and Georgia’s Euro-Atlantic aspirations for membership in NATO. We agreed today that these countries will become members of NATO", emphasis mine.
> No, it doesn't mean foreign bases in Ukraine
This is fair, and I thought about clarifying the point myself. The reason I left it as is, is that regardless of whether there would be a literal NATO/US base in Ukraine, there would be a highly effective level of military command and equipment synchronization, such that NATO ally troop/materiel movement into Ukraine would be vastly more fast and simple to accomplish. It would certainly vastly expand the risk profile of that section of Russia's border. Of course, since 2014 Ukraine became a NATO-lite member and most of this synchronization began anyway.