建设无人机增强

• 进入蘸豆模式自动设置为“仅维修”状态 TODO: 需要可以配置
• 快捷键切换建设无人机状态，默认快捷键为 Insert（开关） 和 Shift + Insert（循环各种模式），可以在游戏设置中修改

Construct drone enhancements

• On entering the combat (battle) mode automatically sets the drone to "repair only". TODO: needs to be configurable
• Hotkey to toggle construction drone mode, default hotkeys are Insert (toggle) and Shift + Insert (cycle through various modes), can be modified in game settings.