feat(v2): gateway 经 Picker 路由选账户 + retry 换号(ExcludeAccounts);替换首个 enabled

main.go

@@ -52,7 +52,10 @@ func main() {
 	notifier.Start(60 * time.Second)
 	productResolver := gateway.NewDBProductResolver(db, "CNY") // 币种按部署区配(cn=CNY / global=USDT)
 	acctReg := accounts.New(config.C.Accounts)
-	gw := gateway.New(orderStore, pReg, acctReg, productResolver, notifier, "cn")
+	// P5 多账户路由:按 config.routing.<channel> 选策略(缺省 round_robin)。
+	// limit_aware 用量数据源 P6 对账就绪前用空源(NopUsage,退化为 round_robin)。
+	acctPicker := accounts.NewRouter(acctReg, config.C.Routing, accounts.NopUsage{})
+	gw := gateway.New(orderStore, pReg, acctPicker, productResolver, notifier, "cn")
 	router.SetupV2(r, gw)
 
 	if config.C.QuerySync.Enabled {