test(qa): make memory channel scenario wait for final answer

extensions/qa-lab/src/providers/mock-openai/server.ts

@@ -2615,7 +2615,7 @@ async function buildResponsesPayload(
   if (/memory tools check/i.test(prompt)) {
     if (!toolOutput) {
       return buildToolCallEventsWithArgs("memory_search", {
-        query: "project codename ORBIT-9",
+        query: "hidden project codename",
         maxResults: 3,
       });
     }

qa/scenarios/memory/memory-tools-channel-context.yaml

@@ -26,7 +26,7 @@ scenario:
       channelId: qa-memory-room
       channelTitle: QA Memory Room
       memoryFact: "Hidden QA fact: the project codename is ORBIT-9."
-      memoryQuery: "project codename ORBIT-9"
+      memoryQuery: "hidden project codename"
       expectedNeedle: ORBIT-9
       prompt: "@openclaw Memory tools check: what is the hidden project codename stored only in memory? Use memory tools first."
       promptSnippet: "Memory tools check"