@

Add MrGameEng.AI utility-AI module; format codebase with CSharpier

New MrGameEng.AI module (ResponseCurve, Consideration, UtilityAction,
UtilityAi selector, Blackboard) plus CSharpier formatting applied across
the whole engine. Documents the CSharpier convention in CLAUDE.md.
@

tests/MrGameEng.Pathfinding.Tests/MrGameEng.Pathfinding.Tests.csproj

@@ -1,5 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <OutputType>Exe</OutputType>
@@ -15,5 +14,4 @@
   <ItemGroup>
     <ProjectReference Include="..\..\src\MrGameEng.Pathfinding\MrGameEng.Pathfinding.csproj" />
   </ItemGroup>
-
 </Project>