FIXES
Crash when selecting a ship next to two MS Pipeline hexes
Ships could enter nebulae/asteroids/unexplored after already moving that turn - now first-move-only, per the rulebook
AI was firing with screened ships from round 2 on - screened ships can retreat, not shoot
Combat softlock when your only acting group was screened - you can pass now
Combining damaged groups silently repaired a ship; damage now survives merges and damaged pairs can't combine
Splits could leave phantom 0-ship counters or exceed the counter supply
Destroyed colonies stranded mineral/wreck markers
Phantom mine battles nobody could act in (purged from older saves too)
End Turn silently dying on older saves
Tab now cycles units, the action strip returns after retreats, and the stack icon follows your selection
Retreat button explains itself instead of offering nothing
Combat freeze when no valid targets exist
Tutorial softlocks in exploration, the Tech step, and 'Build Three Destroyers'