fix(agents): align runtime with updated deps

src/media-understanding/attachments.cache.ts

@@ -230,10 +230,10 @@ export class MediaAttachmentCache {
   }
 
   async cleanup(): Promise<void> {
-    const cleanups: Array<Promise<void> | void> = [];
+    const cleanups: Promise<void>[] = [];
     for (const entry of this.entries.values()) {
       if (entry.tempCleanup) {
-        cleanups.push(Promise.resolve(entry.tempCleanup()));
+        cleanups.push(entry.tempCleanup());
         entry.tempCleanup = undefined;
       }
     }