refactor wallet domain management

backend/api/internal/config/config.go

@@ -10,12 +10,18 @@ import (
 // Spec 是 Platform API 的运行配置。
 var Spec SrvConfig
 
+// WalletConfig 保存钱包后台资金操作限制。
+type WalletConfig struct {
+	ManualRechargeMaxAmount int64 `yaml:"ManualRechargeMaxAmount"`
+}
+
 // SrvConfig 与 sample/server 配置结构保持一致。
 type SrvConfig struct {
 	conf.Base `yaml:",inline"`
 	Databases *conf.DBConf            `yaml:"Databases"`
 	Rpc       map[string]conf.RpcConf `yaml:"Rpc"`
 	Apm       *conf.ApmConf           `yaml:"APM"`
+	Wallet    WalletConfig            `yaml:"Wallet"`
 }
 
 // New 初始化 BSM 配置并校验服务监听地址。
@@ -25,5 +31,8 @@ func New(srvKey string) {
 	Spec.BindIP = conf.CheckIP(Spec.BindIP)
 	Spec.Addr = net.JoinHostPort(Spec.BindIP, Spec.Port)
 	conf.NotNil(Spec.Service, Spec.Cache)
+	if Spec.Wallet.ManualRechargeMaxAmount <= 0 {
+		panic("Wallet.ManualRechargeMaxAmount must be greater than zero")
+	}
 	conf.PrintInfo(Spec.Addr)
 }