BetterIk/Maths/AssemblyInfo.cs

AssemblyInfo for the BetterIk.Math assembly, enabling nullable annotations and documenting that this folder is engine-agnostic IK math code which must not reference Sandbox/Editor so it can compile in a plain .NET 8 dev harness for unit testing.

#nullable enable annotations

// Engine-agnostic IK math. No Sandbox/Editor references allowed in this folder:
// these sources also compile in the plain net8.0 dev harness (dev/BetterIk.Dev.csproj)
// so the solver can be unit-tested without the s&box editor running.