refactor(encipher): 更新 JWT 过期时间变量

- 将 vars.JwtExpireDay 更改为 vars.JwtExpire，使代码更具通用性
- 优化了 GenerateTokenAes 函数中的过期时间计算逻辑

crypto/encipher/encipher.go

@@ -30,7 +30,7 @@ func GenerateTokenAes(id uint, identity, client, role string, owner any, extend
 	if !(JwtSecretLen == 16 || JwtSecretLen == 24 || JwtSecretLen == 32) {
 		return "", errcode.ErrJWTSecretKey
 	}
-	expireTime := time.Now().Add(vars.JwtExpireDay)
+	expireTime := time.Now().Add(vars.JwtExpire)
 	claims := types.JwtClaims{
 		ID:        id,
 		Identity:  identity,