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

src/imessage/monitor/monitor-provider.ts

@@ -549,8 +549,18 @@ export async function monitorIMessageProvider(opts: MonitorIMessageOpts = {}): P
     }
 
     const imessageTo = (isGroup ? chatTarget : undefined) || `imessage:${sender}`;
+    const inboundHistory =
+      isGroup && historyKey && historyLimit > 0
+        ? (groupHistories.get(historyKey) ?? []).map((entry) => ({
+            sender: entry.sender,
+            body: entry.body,
+            timestamp: entry.timestamp,
+          }))
+        : undefined;
     const ctxPayload = finalizeInboundContext({
       Body: combinedBody,
+      BodyForAgent: bodyText,
+      InboundHistory: inboundHistory,
       RawBody: bodyText,
       CommandBody: bodyText,
       From: isGroup ? `imessage:group:${chatId ?? "unknown"}` : `imessage:${sender}`,