合并主分支素材库多选更新

合入素材库多选操作与批量导出更新
保留画布生成配方分支改动并解决冲突

src/services/assetReadUrlService.ts

@@ -101,6 +101,15 @@ export function shouldResolveAssetReadUrl(source: string | null | undefined) {
   );
 }
 
+export function hasReadableAssetSource(
+  source: string | null | undefined,
+  objectKey?: string | null,
+) {
+  return Boolean(
+    source?.trim() || objectKey?.trim().replace(/^\/+/u, ''),
+  );
+}
+
 function normalizeLegacyPublicPath(value: string) {
   return `/${value.trim().replace(/^\/+/u, '')}`;
 }
@@ -513,11 +522,11 @@ export async function readAssetBytes(
   options: AssetReadBytesOptions = {},
 ) {
   const value = source?.trim() ?? '';
-  if (!value) {
+  const objectKey = options.objectKey?.trim().replace(/^\/+/u, '') ?? '';
+  if (!hasReadableAssetSource(value, objectKey)) {
     throw new Error('资源路径不能为空');
   }
 
-  const objectKey = options.objectKey?.trim().replace(/^\/+/u, '') ?? '';
   const legacyPath = isGeneratedLegacyPath(value)
     ? value
     : resolveGeneratedLegacyPathFromUrl(value);