UE Procedural Generation Target engine: UE 5.8 . APIs below are verified against the 5.8 headers; older forms are listed under "Deprecated — do not use". Covers the PCG framework (plugin at , enabled by default, Build.cs module ), runtime mesh building with (plugin , module ) and + Geometry Script (modules and ), instancing with / , spline-driven placement, and deterministic noise/random from . Context Read if it exists (module names, conventions, enabled plugins, GAS/networking setup). Do not stop if it is missing. Identify the area from the request and the codebase. Ask only when two plausi…