fix: use memoPayload for private memo content to preserve subscription metadata

Author: ariessa

src/acpClient.ts

@@ -656,10 +656,10 @@ class AcpClient {
       "isPrivate" in serviceRequirement &&
       serviceRequirement.isPrivate;
 
-    let content = preparePayload(serviceRequirement);
+    let content = memoPayload;
 
     if (isPrivate) {
-      const memoContent = await this.createMemoContent(jobId, content);
+      const memoContent = await this.createMemoContent(jobId, memoPayload);
       content = memoContent.url;
     }
 

src/acpJobOffering.ts

@@ -308,7 +308,7 @@ class AcpJobOffering {
     payloads.push(
       this.acpContractClient.createMemo(
         jobId,
-        this.isPrivate ? content : JSON.stringify(serviceRequirement),
+        content,
         this.isPrivate ? MemoType.OBJECT_URL : MemoType.MESSAGE,
         true,
         AcpJobPhases.NEGOTIATION,