Index tiles by pearls

[charredUtensil]

After the rough step (or potentially before, as its own step?), build a data structure that can be used to, given a tile, lookup the list of planner pearls that intersect it either as inner or outer.

This might be something similar to but not connected directly to Diorama - for overlays and things like discovery that aren't exactly "plastic" but have metadata about... stuff. Maybe TileMetadata?

This data structure solves a lot of the ongoing problems with Hognose, including:

• Getting halls to have resources but only where they don't intersect with caverns
• Making lava peninsulas not look like garbage
• Making "eclipsed" caverns that work like an offset doughnut
• Adding hints (like lost vehicles) to caves adjacent to lost miners