fix(agent): serialize runs per session

src/auto-reply/reply.ts

@@ -983,6 +983,7 @@ export async function getReplyFromConfig(
     const runId = crypto.randomUUID();
     const runResult = await runEmbeddedPiAgent({
       sessionId: sessionIdFinal,
+      sessionKey,
       sessionFile,
       workspaceDir,
       config: cfg,