Add 2FA password reset request

src/TelegramPanel.Core/Services/Telegram/AccountTelegramToolsService.cs

@@ -330,6 +330,50 @@ public class AccountTelegramToolsService
         }
     }
 
+    /// <summary>
+    /// 忘记二级密码：向 Telegram 发起“重置两步验证密码”申请（通常需要等待 7 天）。
+    /// </summary>
+    public async Task<(bool Success, string? Error, DateTimeOffset? WaitUntilUtc)> RequestTwoFactorPasswordResetAsync(
+        int accountId,
+        CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            var client = await GetOrCreateConnectedClientAsync(accountId, cancellationToken);
+            cancellationToken.ThrowIfCancellationRequested();
+
+            var result = await client.Account_ResetPassword();
+            cancellationToken.ThrowIfCancellationRequested();
+
+            switch (result)
+            {
+                case TL.Account_ResetPasswordOk:
+                    return (true, "二级密码已重置成功（现在可以直接重新设置二级密码）", null);
+
+                case TL.Account_ResetPasswordRequestedWait wait:
+                {
+                    var untilUtc = DateTimeOffset.FromUnixTimeSeconds(wait.until_date);
+                    return (true, $"已提交重置申请，请等待至 {untilUtc:yyyy-MM-dd HH:mm:ss} UTC 后再完成重置/重新设置二级密码", untilUtc);
+                }
+
+                case TL.Account_ResetPasswordFailedWait failed:
+                {
+                    var retryUtc = DateTimeOffset.FromUnixTimeSeconds(failed.retry_date);
+                    return (false, $"近期有被取消的重置申请，需等待至 {retryUtc:yyyy-MM-dd HH:mm:ss} UTC 后才能再次申请", retryUtc);
+                }
+
+                default:
+                    return (false, $"未知返回类型：{result.GetType().Name}", null);
+            }
+        }
+        catch (Exception ex)
+        {
+            var (summary, details) = MapTelegramException(ex);
+            var msg = string.IsNullOrWhiteSpace(details) ? summary : $"{summary}：{details}";
+            return (false, msg, null);
+        }
+    }
+
     /// <summary>
     /// 获取两步验证找回邮箱状态（是否已绑定、是否存在待确认的邮箱）。
     /// </summary>

src/TelegramPanel.Web/Components/Dialogs/ChangeTwoFactorPasswordDialog.razor

@@ -17,6 +17,10 @@
             <MudTextField @bind-Value="currentPassword" Label="原二级密码" Variant="Variant.Outlined" InputType="InputType.Password"
                           HelperText="如果账号未开启两步验证，可留空" />
 
+            <MudAlert Severity="Severity.Info" Variant="Variant.Outlined" Dense="true">
+                忘记原二级密码时，可发起“重置二级密码”申请（通常需要等待 7 天）。等待结束后，再回来设置新的二级密码即可。
+            </MudAlert>
+
             <MudTextField @bind-Value="newPassword" Label="新二级密码" Variant="Variant.Outlined" InputType="InputType.Password"
                           Required="true" />
 
@@ -44,7 +48,7 @@
                     <HeaderContent>
                         <MudTh>账号</MudTh>
                         <MudTh>结果</MudTh>
-                        <MudTh>原因</MudTh>
+                        <MudTh>原因/提示</MudTh>
                     </HeaderContent>
                     <RowTemplate>
                         <MudTd DataLabel="账号">@context.Phone</MudTd>
@@ -53,7 +57,7 @@
                                 @(context.Success ? "成功" : "失败")
                             </MudChip>
                         </MudTd>
-                        <MudTd DataLabel="原因">@((context.Error ?? "").Trim())</MudTd>
+                        <MudTd DataLabel="原因/提示">@((context.Message ?? "").Trim())</MudTd>
                     </RowTemplate>
                 </MudTable>
             }
@@ -61,6 +65,9 @@
     </DialogContent>
     <DialogActions>
         <MudButton Variant="Variant.Text" Color="Color.Default" OnClick="Cancel" Disabled="@running">关闭</MudButton>
+        <MudButton Variant="Variant.Outlined" Color="Color.Warning" OnClick="StartReset" Disabled="@running">
+            忘记密码（申请重置）
+        </MudButton>
         <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="Start" Disabled="@running">
             @if (running)
             {
@@ -154,7 +161,7 @@
 
                 processed++;
                 if (ok) success++; else failed++;
-                results.Add(new ResultRow(a.Phone, ok, err));
+                results.Add(new ResultRow(a.Phone, ok, ok ? null : err));
                 StateHasChanged();
             }
 
@@ -170,7 +177,58 @@
         }
     }
 
+    private async Task StartReset()
+    {
+        if (running)
+            return;
+
+        if (accounts.Count == 0)
+        {
+            Snackbar.Add("未选择账号", Severity.Warning);
+            return;
+        }
+
+        bool? confirm = await DialogService.ShowMessageBox(
+            "确认申请重置",
+            $"将对 {accounts.Count} 个账号向 Telegram 发起“重置二级密码”申请（通常需要等待 7 天）。是否继续？",
+            yesText: "继续", cancelText: "取消");
+
+        if (confirm != true)
+            return;
+
+        running = true;
+        processed = 0;
+        success = 0;
+        failed = 0;
+        results.Clear();
+
+        try
+        {
+            foreach (var a in accounts)
+            {
+                var (ok, msg, _) = await AccountTelegramTools.RequestTwoFactorPasswordResetAsync(
+                    accountId: a.Id,
+                    cancellationToken: CancellationToken.None);
+
+                processed++;
+                if (ok) success++; else failed++;
+                results.Add(new ResultRow(a.Phone, ok, msg));
+                StateHasChanged();
+            }
+
+            Snackbar.Add($"重置申请已处理：成功 {success}/{accounts.Count}，失败 {failed}/{accounts.Count}", failed == 0 ? Severity.Success : Severity.Warning);
+        }
+        catch (Exception ex)
+        {
+            Snackbar.Add($"执行失败：{ex.Message}", Severity.Error);
+        }
+        finally
+        {
+            running = false;
+        }
+    }
+
     private void Cancel() => MudDialog.Close();
 
-    private sealed record ResultRow(string Phone, bool Success, string? Error);
+    private sealed record ResultRow(string Phone, bool Success, string? Message);
 }