diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/export.rs b/apps/ai-game-creator-shell/src-tauri/src/project/export.rs
index d55fdcd59..1937bb784 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/export.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/export.rs
@@ -934,9 +934,9 @@ mod npm_export_tests {
 
     #[test]
     fn npm_package_contains_dist_project_root_assets_and_publish_readme() {
-        let base = PathBuf::from(std::env::var("HOME").unwrap()).join("data/tmp");
-        fs::create_dir_all(&base).unwrap();
-        let root = tempfile::tempdir_in(base).unwrap();
+        // 仓库约定的跨平台临时根（基于 std::env::temp_dir()）：不依赖 HOME，
+        // Windows 上只有 USERPROFILE 时同样可跑。
+        let root = crate::tests::canonical_test_tempdir("agc-npm-export-");
         for directory in [
             "dist/assets/uploads",
             "assets/uploads",
@@ -993,9 +993,8 @@ mod npm_export_tests {
 
     #[test]
     fn built_project_publish_payload_includes_uploaded_assets_and_prefers_dist_assets() {
-        let base = PathBuf::from(std::env::var("HOME").unwrap()).join("data/tmp");
-        fs::create_dir_all(&base).unwrap();
-        let root = tempfile::tempdir_in(base).unwrap();
+        // 与同批另 5 条 publish_export_tests 同口径：用仓库的跨平台临时根，不依赖 HOME。
+        let root = crate::tests::canonical_test_tempdir("agc-publish-payload-");
         for directory in [
             "dist/assets/uploads",
             "assets/uploads",