@

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/FlowFieldTests.cs

@@ -8,10 +8,7 @@ public class FlowFieldTests
     [Fact]
     public void Build_DistancesGrowFromGoal_DirectionsDescend()
     {
-        var grid = new TestGrid(
-            ".....",
-            ".###.",
-            ".....");
+        var grid = new TestGrid(".....", ".###.", ".....");
         var builder = new FlowFieldBuilder(grid);
         var field = new FlowField();
 
@@ -25,7 +22,11 @@ public class FlowFieldTests
         {
             for (var x = 0; x < grid.Width; x++)
             {
-                if (!grid.IsPassable(x, y) || !field.IsReachable(x, y) || field.DistanceAt(x, y) == 0f)
+                if (
+                    !grid.IsPassable(x, y)
+                    || !field.IsReachable(x, y)
+                    || field.DistanceAt(x, y) == 0f
+                )
                 {
                     continue;
                 }
@@ -34,8 +35,10 @@ public class FlowFieldTests
                 Assert.NotEqual(Vector2.Zero, direction);
                 var nx = x + Math.Sign(MathF.Round(direction.X * 10f));
                 var ny = y + Math.Sign(MathF.Round(direction.Y * 10f));
-                Assert.True(field.DistanceAt(nx, ny) < field.DistanceAt(x, y),
-                    $"direction at ({x},{y}) does not descend");
+                Assert.True(
+                    field.DistanceAt(nx, ny) < field.DistanceAt(x, y),
+                    $"direction at ({x},{y}) does not descend"
+                );
             }
         }
     }
@@ -43,10 +46,7 @@ public class FlowFieldTests
     [Fact]
     public void Build_UnreachablePocket_IsFlagged()
     {
-        var grid = new TestGrid(
-            "..#..",
-            "..#..",
-            "..#..");
+        var grid = new TestGrid("..#..", "..#..", "..#..");
         var builder = new FlowFieldBuilder(grid);
         var field = new FlowField();