fix small

src/service/duel/agent.ts

-import { PredictReq } from "@/api";
+import { PredictReq, ygopro } from "@/api";
 import { cardStore, matStore, placeStore } from "@/stores";
 
-export function genPredictReq(): PredictReq {
+export function genPredictReq(msg: ygopro.StocGameMessage): PredictReq {
   // 全局信息可以从 `matStore` 里面拿
   const mat = matStore;
   // 卡片信息可以从 `cardStore` 里面拿
@@ -9,6 +9,8 @@ export function genPredictReq(): PredictReq {
   // 选择场上位置的可选项可以从 `cardStore` 里面拿
   // 也可以从 `selectPlace` msg 里面获取
   const place = placeStore;
+  // select_xxx msg 从参数 `msg` 里获取
+  // 这里已经保证 `msg` 是众多 `select_xxx` msg 中的一个
 
   const duelId = mat.duelId;
   const index = mat.agentIndex;