feat: async task pipeline for media and llm workflows

server/storage.ts

@@ -4,6 +4,7 @@
 import { mkdir, readFile, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { ENV } from './_core/env';
+import { toPublicUrl } from "./publicUrl";
 
 type StorageConfig = { baseUrl: string; apiKey: string };
 
@@ -141,3 +142,7 @@ export async function storageGet(relKey: string): Promise<{ key: string; url: st
     url: await buildDownloadUrl(baseUrl, key, apiKey),
   };
 }
+
+export function toExternalAssetUrl(pathOrUrl: string) {
+  return toPublicUrl(pathOrUrl);
+}