A content wave is a law
An incursion is not a renamed region. It is a universe leaking through one coherent incompatibility. That law sets palette, light, material, geometry, atmosphere, vegetation, deterioration and landmark grammar before the map is dressed.
The same law designs creatures
A readable base receives one impossible rule. The Deriva deepens that rule instead of adding unrelated spectacle. The world around it shows the same incompatibility at environmental scale. Creature and map therefore feel related without sharing copied shapes.
Production consequence
Blockout, elevation, connectivity, modular kit, lighting and validation follow in order. Maps stream by incursion and quadrant. The native editor must expose collision, elevation, y-sort and overrides. All four previous maps are retired; the ESVA redesign starts from this layered pipeline.