fix(chat): isolate pending flows and cancel stale requests

src/stores/sync/chat-payment-success-sync.tsx

@@ -5,7 +5,10 @@ import { useEffect, useRef } from "react";
 import { shallowEqual } from "@xstate/react";
 
 import { hasPendingChatUnlock } from "@/lib/navigation/chat_unlock_session";
-import { useChatDispatch } from "@/stores/chat/chat-context";
+import {
+  useChatDispatch,
+  useChatSelector,
+} from "@/stores/chat/chat-context";
 import { usePaymentSelector } from "@/stores/payment/payment-context";
 
 export function ChatPaymentSuccessSync() {
@@ -17,6 +20,7 @@ export function ChatPaymentSuccessSync() {
     }),
     shallowEqual,
   );
+  const characterId = useChatSelector((state) => state.context.characterId);
   const chatDispatch = useChatDispatch();
   const lastPaidKeyRef = useRef<string | null>(null);
 
@@ -29,7 +33,7 @@ export function ChatPaymentSuccessSync() {
 
     let cancelled = false;
     void (async () => {
-      if (await hasPendingChatUnlock()) return;
+      if (await hasPendingChatUnlock(characterId)) return;
       if (!cancelled) chatDispatch({ type: "ChatPaymentSucceeded" });
     })();
 
@@ -38,6 +42,7 @@ export function ChatPaymentSuccessSync() {
     };
   }, [
     chatDispatch,
+    characterId,
     paymentState.currentOrderId,
     paymentState.isPaid,
     paymentState.orderStatus,