Christmas day coding session. Added probe factory buildings that queue and launch probes to explore the asteroid surface, expanding the fog of war. The ProbeManager handles probe lifecycle from launch to landing, with a debug panel for tuning probe parameters.

Mines now have drill depth controls displayed in the HUD — you can drill deeper or shallower, and a MineMask overlay shows the resource percentage being extracted at the current depth. The intersection area calculation figures out how much of each Voronoi resource region falls within the mine’s drill radius.

Limited camera zoom-out to the revealed fog area so you can’t zoom past the explored regions. Extracted shared button and menu styles into their own modules and refactored BuildMenu to use them.