wip: 🧠 初步的框架

src/backend/NetAdmin.SysComponent.Host/Controllers/Sys/CaptchaController.cs

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+using NetAdmin.Domain.Dto.Sys.Captcha;
+using NetAdmin.Host.Controllers;
+using NetAdmin.SysComponent.Application.Modules.Sys;
+using NetAdmin.SysComponent.Application.Services.Sys.Dependency;
+using NetAdmin.SysComponent.Cache.Sys.Dependency;
+
+namespace NetAdmin.SysComponent.Host.Controllers.Sys;
+
+/// <summary>
+///     人机验证服务
+/// </summary>
+[ApiDescriptionSettings(nameof(Sys), Module = nameof(Sys))]
+public sealed class CaptchaController : ControllerBase<ICaptchaCache, ICaptchaService>, ICaptchaModule
+{
+    /// <summary>
+    ///     Initializes a new instance of the <see cref="CaptchaController" /> class.
+    /// </summary>
+    public CaptchaController(ICaptchaCache cache) //
+        : base(cache) { }
+
+    /// <summary>
+    ///     获取人机校验图
+    /// </summary>
+    [AllowAnonymous]
+    public Task<GetCaptchaRsp> GetCaptchaImageAsync()
+    {
+        return Cache.GetCaptchaImageAsync();
+    }
+
+    /// <summary>
+    ///     完成人机校验
+    /// </summary>
+    [AllowAnonymous]
+    public Task<bool> VerifyCaptchaAsync(VerifyCaptchaReq req)
+    {
+        return Cache.VerifyCaptchaAsync(req);
+    }
+}