docs: note wallet session tradeoffs

src/wallet/api.ts

@@ -63,9 +63,11 @@ export function createTokenPocketLoginRequest(): Promise<TokenPocketLoginRequest
 
 export async function fetchTokenPocketLoginResult(
   actionId: string,
+  signal?: AbortSignal,
 ): Promise<TokenPocketLoginResult> {
   const res = await fetch(
     `${apiBase}/api/auth/wallet/tp-result?actionId=${encodeURIComponent(actionId)}`,
+    { signal },
   );
   if (!res.ok) throw new Error(await res.text());
   return res.json() as Promise<TokenPocketLoginResult>;