Bug: When you make a nex start aligned with scalartech, you get the hull blueprint but not the weapon blueprint. This can be fixed by replacing
"startSpecialItems":[
[["tahlan_scalartech_hull_package", "tahlan_scalartech_weapon_package", ""]],
],
with
"startSpecialItems":[
[["tahlan_scalartech_hull_package", ""]], [["tahlan_scalartech_weapon_package", ""]],
],
(Yes, that's a slightly egregious supply of brackets. Not sure why it's formatted like that, but that's what works.)
Might-be-a-bug: I'd originally thought the weapon blueprint was broken entirely, as no scalartech weapons were available for sale in any of the markets (including the STDF Requisitions market), nor were any installed on any fleets I inspected.
Further investigation (restarting the game several times to track down the issue with the missing starting blueprint) revealed that they do have access to scalartech weapons, they're just really really rare due to the number of blueprint packages the faction has available and the lack of anything set as 'priority' weapons.
(The scalartech elite sub-faction fleets do seem to properly prioritize scalartech weaponry, though, so maybe the lack of such things in the general market is intended?)