fix: address runtime warnings in build

src/gateway/client.ts

@@ -146,7 +146,11 @@ export class GatewayClient {
         const pending = this.pending.get(parsed.id);
         if (!pending) return;
         // If the payload is an ack with status accepted, keep waiting for final.
-        const status = parsed.payload?.status;
+        const payload = parsed.payload;
+        const status =
+          payload && typeof payload === "object" && "status" in payload
+            ? (payload as { status?: unknown }).status
+            : undefined;
         if (pending.expectFinal && status === "accepted") {
           return;
         }