MAF1/Plugins/weather/Program.cs

// 进程外 Weather 插件。stdio 适配 + 复用 MAF1.Core 的 WeatherAgent。
// LLM / OpenWeather Key 只来自宿主注入的环境变量；天气站点配置读本插件目录的 appsettings.json。
using MAF1.Agents.Weather;
using MAF1.PluginContract;
using MAF1.Tools;
using MAF1.Utils;
using Microsoft.Extensions.Configuration;

PluginRequest request = await PluginStdio.ReadRequestAsync();
PluginStdio.ApplyCredentialsToEnvironment(request.Credentials);

IConfiguration config = PluginStdio.LoadPluginConfiguration();
AgentFactory factory = new(AgentFactory.Load(config));
WeatherOptions weatherOptions = config.GetSection("Weather").Get<WeatherOptions>() ?? new WeatherOptions();
string? openWeatherKey = Environment.GetEnvironmentVariable("OPENWEATHER_API_KEY");
if (!string.IsNullOrWhiteSpace(openWeatherKey))
{
    weatherOptions.OpenWeather.ApiKey = openWeatherKey;
}

using HttpClient http = WeatherTools.CreateHttpClient();
var result = await WeatherAgent.RunAsync(
    WeatherAgent.Create(factory, new WeatherTools(weatherOptions, http)),
    request.Inputs);
await PluginStdio.WriteOutputsAsync(result.Outputs);
return 0;