继续收口创作侧暗色头尾动作按钮

统一角色素材工坊头部关闭与底部保存按钮到 PlatformActionButton
统一实体编辑器底部取消按钮到 PlatformActionButton
补充 PlatformUiKit 收口计划与共享决策记录

src/components/rpg-creation-editor/RpgCreationEntityEditorShared.tsx

@@ -4305,13 +4305,17 @@ export function SaveBar({
         ) : null}
         <div className="flex flex-col-reverse gap-3 sm:flex-row sm:justify-end">
           {showClose ? (
-            <button
+            <PlatformActionButton
               type="button"
+              surface="editorDark"
+              tone="ghost"
+              size="sm"
+              shape="pill"
               onClick={onClose}
-              className="rounded-full border border-white/10 bg-black/20 px-4 py-2 text-sm text-zinc-300 transition-colors hover:text-white"
+              className="py-2 text-zinc-300"
             >
               取消
-            </button>
+            </PlatformActionButton>
           ) : null}
           <ActionButton label="保存修改" onClick={onSave} tone="sky" />
         </div>