@

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/GridResizeTests.cs

@@ -27,8 +27,9 @@ public class GridResizeTests
         var pathfinder = new GridPathfinder(grid);
         grid.Width = 8;
 
-        Assert.Throws<InvalidOperationException>(
-            () => pathfinder.FindPath(new Point(0, 0), new Point(1, 1), []));
+        Assert.Throws<InvalidOperationException>(() =>
+            pathfinder.FindPath(new Point(0, 0), new Point(1, 1), [])
+        );
     }
 
     [Fact]
@@ -38,7 +39,8 @@ public class GridResizeTests
         var builder = new FlowFieldBuilder(grid);
         grid.Height = 8;
 
-        Assert.Throws<InvalidOperationException>(
-            () => builder.Build([new Point(0, 0)], new FlowField()));
+        Assert.Throws<InvalidOperationException>(() =>
+            builder.Build([new Point(0, 0)], new FlowField())
+        );
     }
 }