Changed the default faction for power armor traders to FCP_Faction_Wasteland_Settlers. Updated power armor and helmet tech levels from Spacer to Industrial. Removed the 'Visitor' category from the power armor trader definition and cleaned up stock generator structure.
Replaced explicit power armor item buy filters with a trade tag in TraderKindDefs_Power_Armor.xml for easier extensibility. Increased weaponMoney minimum from 300 to 400 in PawnKindDefs_Power_Armor_Trader.xml to adjust trader inventory value.
Introduces new XML definitions for a Power Armor Specialist trader and associated pawnkind. The trader offers various power armor items and accepts them for trade, expanding trading options related to power armor equipment.