It is indeed technology locked behind an event. And also behind an AP. In normal gameplay, you would need to get the precursor databank tech, which is itself locked behind an event, and then you'd use the precursor ship reimagination project. For the fortress, you also need an ascension perk that lets you reimagine more advanced ships. The fortress itself is locked behind the two defense platforms.

Alternatively, your friend can try "research_all_technologies 1". This version of the command bypasses some restrictions. It may work for the precursor ships, I do not recall.

引用自 Nova Solarius：

It is indeed technology locked behind an event. And also behind an AP. In normal gameplay, you would need to get the precursor databank tech, which is itself locked behind an event, and then you'd use the precursor ship reimagination project. For the fortress, you also need an ascension perk that lets you reimagine more advanced ships. The fortress itself is locked behind the two defense platforms.

Alternatively, your friend can try "research_all_technologies 1". This version of the command bypasses some restrictions. It may work for the precursor ships, I do not recall.

thanks!