@

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.
@

CLAUDE.md

@@ -26,7 +26,10 @@ pipeline), `Assets.Generator` (Roslyn source generator for typed asset handles),
 `Atlases` (texture-atlas builder + runtime loader; CLI wrapper in `tools/MrGameEng.AtlasTool`),
 `Tilemaps` (code-built tile grids rendered through the batcher; `scene.UseTilemaps()`
 after `UseRenderer2D()`), `Pathfinding` (grid A*/Dijkstra/BFS and flow fields over a
-game-implemented `IPathGrid`; Core-only, owns no world data), `Collisions` (`Collider`
+game-implemented `IPathGrid`; Core-only, owns no world data),
+`AI` (utility-AI primitives — `ResponseCurve`, `Consideration<TContext>`, `UtilityAction<TContext>`,
+`UtilityAi<TContext>` selector, and a `Blackboard`; deterministic, generic over a game context,
+Core-only, owns no world data), `Collisions` (`Collider`
 component, spatial hash rebuilt per tick, pairs/queries/raycast; `scene.UseCollisions()`
 after movement systems), `UI` (Myra integration: `scene.UseUI()` after `UseRenderer2D()`),
 `DevConsole` (in-game console capturing `Core.Log`; `scene.UseDevConsole()` last in OnLoad),
@@ -78,6 +81,9 @@ generator do not load under the SDK 8 compiler); the target framework stays net8
 - Nullable reference types enabled, warnings as errors, file-scoped namespaces.
 - Public engine API requires XML doc comments (English).
 - Tests: xUnit, named `Method_Scenario_Expectation`.
+- Formatting: all C# code is formatted with **CSharpier**. Match its output —
+  run `csharpier format .` (or let the editor's format-on-save handle it) before
+  committing; never hand-format against it.
 
 ## Memory (echovault MCP)