修复UI编辑器远端导入编译错误

将远端素材导入改为异步下载后加锁提交，消除 await 同步函数编译错误。

更新字体素材导入测试以使用当前筛选器与配置契约。

apps/ai-game-creator-shell/src-tauri/src/commands.rs

@@ -2202,25 +2202,22 @@ mod ui_editor_font_tests {
     }
 }
 
-pub(crate) fn import_ui_editor_remote_assets(
+pub(crate) async fn import_ui_editor_remote_assets(
     project_path: String,
     assets: Vec<serde_json::Value>,
 ) -> Result<RemoteImportResult, String> {
     let root = Path::new(project_path.trim());
     enforce_project_permission_policy(root, "canvas.asset_import")?;
-    let _lock = acquire_project_write_lock(root, "canvas.asset_import")?;
     if assets.len() > UI_EDITOR_IMAGE_MAX_COUNT {
         return Err(format!("一次最多选择 {UI_EDITOR_IMAGE_MAX_COUNT} 张图片"));
     }
-    // 远程素材导入保持与本地图片/字体相同的增量语义，不对已成功项目文件做整批回滚。
+    // IPC 只传稳定引用/签名 URL，由 Rust 流式下载并限制响应体；下载期间不占有项目写锁。
     let mut total_size = 0u64;
-    let mut imported = Vec::with_capacity(assets.len());
+    let mut downloads = Vec::with_capacity(assets.len());
     for asset in assets {
         let asset_id = json_string_field(&asset, "assetId")
             .or_else(|| json_string_field(&asset, "objectKey"))
             .ok_or_else(|| "平台素材缺少稳定 assetId/objectKey，拒绝导入".to_string())?;
-        // 参考资源同步流程：IPC 只传稳定引用/签名 URL，由 Rust 流式下载并限制响应体，
-        // 避免把不受控的 Vec<u8> 在 IPC 反序列化阶段一次性放入内存。
         let download_url = json_string_field(&asset, "downloadUrl")
             .ok_or_else(|| format!("平台素材 {asset_id} 缺少 downloadUrl"))?;
         let remaining = UI_EDITOR_IMAGE_MAX_TOTAL_SIZE.saturating_sub(total_size);
@@ -2243,6 +2240,13 @@ pub(crate) fn import_ui_editor_remote_assets(
         } else {
             return Err("平台素材不是受支持的 PNG/JPEG/WEBP 图片".to_string());
         };
+        downloads.push((asset, asset_id, media_type.to_string(), bytes));
+    }
+
+    let _lock = acquire_project_write_lock(root, "canvas.asset_import")?;
+    // 远程素材导入保持与本地图片/字体相同的增量语义，不对已成功项目文件做整批回滚。
+    let mut imported = Vec::with_capacity(downloads.len());
+    for (asset, asset_id, media_type, bytes) in downloads {
         let extension = infer_file_extension(
             json_string_field(&asset, "objectKey")
                 .or_else(|| json_string_field(&asset, "imageSrc"))

apps/ai-game-creator-shell/tests/assetImporter.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it } from 'vitest';
 
+import { FONT_IMPORTER_SETTINGS } from '../src/components/AssetImporter/settings';
 import {
   buildProjectFiles,
   buildRootFiles,
@@ -25,15 +26,16 @@ describe('AssetImporter font mode', () => {
       },
     ];
 
-    const files = buildProjectFiles(assets, 'font').filter(
-      (entry) => !entry.isDirectory,
-    );
+    const files = buildProjectFiles(
+      assets,
+      FONT_IMPORTER_SETTINGS.local.typeFilter,
+    ).filter((entry) => !entry.isDirectory);
     expect(files.map((entry) => entry.asset?.id)).toEqual([
       'font-1',
       'font-by-extension',
     ]);
-    expect(buildRootFiles('font').map((entry) => entry.name)).toEqual([
-      '本地项目字体',
-    ]);
+    expect(
+      buildRootFiles(FONT_IMPORTER_SETTINGS).map((entry) => entry.name),
+    ).toEqual(['本地项目']);
   });
 });