diff --git a/src/backend/NetAdmin.Domain/Contexts/ContextApp.cs b/src/backend/NetAdmin.Domain/Contexts/ContextApp.cs
deleted file mode 100644
index f5b39e4d..00000000
--- a/src/backend/NetAdmin.Domain/Contexts/ContextApp.cs
+++ /dev/null
@@ -1,113 +0,0 @@
-namespace NetAdmin.Domain.Contexts;
-
-/// <summary>
-///     上下文应用信息
-/// </summary>
-/// <remarks>
-///     签名算法： $"${appId}{appSecret.ToLowerInvariant()}{timestamp}{reqBody}".Md5(Encoding.UTF8);
-///     reqBody 需去除\r、\n、whitespace
-/// </remarks>
-public sealed record ContextApp : DataAbstraction, IValidatableObject
-{
-    private const int _TS_OFFSET_SCOPE_SEC = 30;
-
-    /// <summary>
-    ///     Initializes a new instance of the <see cref="ContextApp" /> class.
-    /// </summary>
-    public ContextApp(long appId, string appSecret, long timestamp)
-    {
-        AppId     = appId;
-        AppSecret = appSecret;
-        Timestamp = timestamp;
-    }
-
-    /// <summary>
-    ///     Initializes a new instance of the <see cref="ContextApp" /> class.
-    /// </summary>
-    private ContextApp()
-    {
-        AppId     = App.HttpContext.Request.Headers[nameof(AppId)].FirstOrDefault().Int64Try(0);
-        AppSecret = App.HttpContext.Request.Headers[nameof(AppSecret)].FirstOrDefault();
-        Sign      = App.HttpContext.Request.Headers[nameof(Sign)].FirstOrDefault();
-        Timestamp = App.HttpContext.Request.Headers[nameof(Timestamp)].FirstOrDefault().Int64Try(0);
-    }
-
-    /// <summary>
-    ///     AppId
-    /// </summary>
-    [Range(1, long.MaxValue)]
-    public long AppId { get; init; }
-
-    /// <summary>
-    ///     AppSecret
-    /// </summary>
-    public string AppSecret { get; init; }
-
-    /// <summary>
-    ///     签名
-    /// </summary>
-    public string Sign { get; set; }
-
-    /// <summary>
-    ///     时间戳
-    /// </summary>
-    public long Timestamp { get; set; }
-
-    /// <summary>
-    ///     从HttpContext  创建上下文应用
-    /// </summary>
-    public static async Task<ContextApp> CreateAsync()
-    {
-        var ret = new ContextApp();
-        if (!ret.TryValidate().IsValid) {
-            return null;
-        }
-
-        // 具有secret的情况下，自动生成时间戳+sign，方便调试
-        if (!ret.AppSecret.NullOrEmpty()) {
-            ret.Timestamp = DateTime.Now.TimeUnixUtc();
-            ret.Sign      = await ret.BuildSignFromHttpContextAsync().ConfigureAwait(false);
-        }
-
-        return ret;
-    }
-
-    /// <summary>
-    ///     构建签名
-    /// </summary>
-    public string BuildSign(string reqBody)
-    {
-        // 去除\r\n和空格再计算签名，规避风格样式问题
-        reqBody = reqBody.Replace("\r", string.Empty).Replace("\n", string.Empty).Replace(" ", string.Empty);
-        return $"{AppId}{AppSecret.ToLowerInvariant()}{Timestamp}{reqBody}".Md5(Encoding.UTF8);
-    }
-
-    /// <summary>
-    ///     构建签名（从http上下文）
-    /// </summary>
-    public async Task<string> BuildSignFromHttpContextAsync()
-    {
-        var sr      = new StreamReader(App.HttpContext.Request.Body);
-        var reqBody = await sr.ReadToEndAsync().ConfigureAwait(false);
-
-        _ = App.HttpContext.Request.Body.Seek(0, SeekOrigin.Begin);
-        return BuildSign(reqBody);
-    }
-
-    /// <inheritdoc />
-    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
-    {
-        if (!AppSecret.NullOrEmpty()) {
-            yield break;
-        }
-
-        // 没有密码， 就要签名+时间戳
-        if (Sign.NullOrEmpty()) {
-            yield return new ValidationResult(Ln.签名缺失, new[] { nameof(Sign) });
-        }
-
-        if (Math.Abs(DateTime.Now.TimeUnixUtc() - Timestamp) > _TS_OFFSET_SCOPE_SEC) {
-            yield return new ValidationResult(Ln.时间戳缺失或误差过大, new[] { nameof(Timestamp) });
-        }
-    }
-}
\ No newline at end of file