fix: route system events per session

src/auto-reply/reply.ts

@@ -515,6 +515,7 @@ export async function getReplyFromConfig(
     !isGroupSession && sessionKey === (sessionCfg?.mainKey ?? "main");
   prefixedBodyBase = await prependSystemEvents({
     cfg,
+    sessionKey,
     isMainSession,
     isNewSession,
     prefixedBodyBase,

src/auto-reply/reply/session-updates.ts

@@ -8,12 +8,11 @@ import { drainSystemEvents } from "../../infra/system-events.js";
 
 export async function prependSystemEvents(params: {
   cfg: ClawdbotConfig;
+  sessionKey: string;
   isMainSession: boolean;
   isNewSession: boolean;
   prefixedBodyBase: string;
 }): Promise<string> {
-  if (!params.isMainSession) return params.prefixedBodyBase;
-
   const compactSystemEvent = (line: string): string | null => {
     const trimmed = line.trim();
     if (!trimmed) return null;
@@ -27,11 +26,11 @@ export async function prependSystemEvents(params: {
   };
 
   const systemLines: string[] = [];
-  const queued = drainSystemEvents();
+  const queued = drainSystemEvents(params.sessionKey);
   systemLines.push(
     ...queued.map(compactSystemEvent).filter((v): v is string => Boolean(v)),
   );
-  if (params.isNewSession) {
+  if (params.isMainSession && params.isNewSession) {
     const summary = await buildProviderSummary(params.cfg);
     if (summary.length > 0) systemLines.unshift(...summary);
   }