Program.cs

using AquaMai.Skill;
using AquaMai.Skill.Services;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

var builder = Host.CreateApplicationBuilder(args);

builder.Configuration.AddEnvironmentVariables(prefix: "AquaMaiSkill__");

builder.Services.AddOptions<AquaMaiSkillOptions>()
    .Bind(builder.Configuration.GetSection(AquaMaiSkillOptions.SectionName));

builder.Services.AddHttpClient<VersionFetcher>(c =>
{
    var opt = builder.Configuration.GetSection(AquaMaiSkillOptions.SectionName).Get<AquaMaiSkillOptions>()
        ?? new AquaMaiSkillOptions();
    c.Timeout = opt.HttpTimeout;
});
builder.Services.AddHttpClient<DllCache>(c =>
{
    var opt = builder.Configuration.GetSection(AquaMaiSkillOptions.SectionName).Get<AquaMaiSkillOptions>()
        ?? new AquaMaiSkillOptions();
    c.Timeout = opt.HttpTimeout;
});
builder.Services.AddSingleton<AquaMaiLoader>();
builder.Services.AddSingleton<SkillRenderer>();
builder.Services.AddHostedService<GeneratorService>();

var host = builder.Build();
await host.RunAsync();