收紧资源布局 revision IPC 精度边界

统一限制资源布局 revision 到 JavaScript 最大安全整数
在 Rust serde、Tauri 输入与前端 IPC 三层拒绝非安全 revision
补充最大值往返、上限失败、超限零副作用与不可信响应回归
同步更新资源画布合同、技术决策与竞态经验

packages/shared/src/contracts/gameCreationApp.ts

@@ -469,6 +469,18 @@ export interface GameCreationAppAssetManifestEntry {
 
 export const GAME_CREATION_RESOURCE_LAYOUT_SCHEMA_VERSION =
   'game-creator-resource-layout.v1' as const;
+export const GAME_CREATION_RESOURCE_LAYOUT_MAX_SAFE_REVISION = 9_007_199_254_740_991;
+
+export function isSafeProjectResourceCanvasLayoutRevision(
+  value: unknown,
+): value is number {
+  return (
+    typeof value === 'number' &&
+    Number.isSafeInteger(value) &&
+    value >= 0 &&
+    value <= GAME_CREATION_RESOURCE_LAYOUT_MAX_SAFE_REVISION
+  );
+}
 
 export type ProjectResourceCanvasLayoutMode = 'dependency' | 'type';