fix(auto-reply): prevent sender spoofing in group prompts

extensions/msteams/src/monitor-handler/message-handler.ts

@@ -454,8 +454,19 @@ export function createMSTeamsMessageHandler(deps: MSTeamsMessageHandlerDeps) {
       });
     }
 
+    const inboundHistory =
+      isRoomish && historyKey && historyLimit > 0
+        ? (conversationHistories.get(historyKey) ?? []).map((entry) => ({
+            sender: entry.sender,
+            body: entry.body,
+            timestamp: entry.timestamp,
+          }))
+        : undefined;
+
     const ctxPayload = core.channel.reply.finalizeInboundContext({
       Body: combinedBody,
+      BodyForAgent: rawBody,
+      InboundHistory: inboundHistory,
       RawBody: rawBody,
       CommandBody: rawBody,
       From: teamsFrom,