Update 1.0.4 - Gameplay Fixes, Mission Stability & Visual Improvements — D.R.I.F.T. Steam update #469745

This update continues refining D.R.I.F.T. with a strong focus on mission stability, ship management, and overall visual clarity. Several long-standing edge cases were addressed, especially around colonization missions, ship selling, and inventory validation, alongside a set of visual and UX improvements. Missions & Progression Fixed multiple issues related to Colonization missions, including early triggering, completion flow, and validation logic. Adjusted active mission validation, correctly excluding Colonization and Command missions where needed. Reduced the probability of final missions appearing, improving pacing and progression balance. Fixed an issue where the Colony Ship did not appear in the hangar when available for purchase. Ship Management & Inventory Fixed conditions that allowed the player ship to be sold incorrectly. Added inventory validation when selling the player’s shi...