Mine Empire v2.0 Update — 矿业帝国 Steam update #1098521

1. Fixed an issue where World Fragment rewards could be exploited through repeated instant rebirths. World Fragments are now calculated based on the highest Stardust reached during the current run. 2. Fixed an issue where achievement progress was reset after rebirth. Achievement progress is now permanently accumulated across all runs. 3. Fixed an issue where Daily Quest progress was affected by rebirth. Daily Quests now track progress independently. 4. Added a Low Performance Mode that reduces particle effects, floating text, and animations to improve game performance. 5. Optimized mineral rendering, floating text, and visual effects using object pooling and rendering improvements to reduce lag in late-game mines.