pinwheel: Disable commit and PR attribution in ai settings

hosts/pinwheel/modules/ai/default.nix

@@ -27,6 +27,10 @@ let
     inherit statusLine;
     theme = "dark";
     editorMode = "vim";
+    attribution = {
+      commit = false;
+      pr = false;
+    };
     hooks = {
       PostToolUse = [
         {