feat(web): add portfolio management UI

src/GmRelay.Web/Components/Pages/SessionHistory.razor

@@ -1,9 +1,11 @@
 @page "/session/{SessionId:guid}/history"
 @using GmRelay.Web.Services
+@using GmRelay.Web.Services.Portfolio
 @using Microsoft.AspNetCore.Authorization
 @using Microsoft.AspNetCore.Components.Authorization
 @attribute [Authorize]
 @inject AuthorizedSessionService SessionService
+@inject AuthorizedPortfolioService PortfolioService
 @inject AuthenticationStateProvider AuthStateProvider
 @inject NavigationManager Navigation
 
@@ -22,6 +24,14 @@
         {
             <p style="color: var(--text-muted); margin-top: 0.25rem;">@sessionTitle</p>
         }
+        @if (groupId is not null && session is not null && session.ScheduledAt < DateTime.UtcNow)
+        {
+            <div style="margin-top: 0.75rem;">
+                <button type="button" class="btn-gm btn-gm-primary" disabled="@isCreatingDraft" @onclick="AddToPortfolio">
+                    @(isCreatingDraft ? "⏳ Создаём..." : "➕ Добавить в портфолио")
+                </button>
+            </div>
+        }
     </div>
 
     @if (entries is null)
@@ -78,6 +88,8 @@
     private List<SessionAuditLogEntry>? entries;
     private string? sessionTitle;
     private Guid? groupId;
+    private WebSession? session;
+    private bool isCreatingDraft;
 
     protected override async Task OnInitializedAsync()
     {
@@ -88,7 +100,7 @@
             return;
         }
 
-        var session = await SessionService.GetSessionForCurrentUserAsync(SessionId);
+        session = await SessionService.GetSessionForCurrentUserAsync(SessionId);
         if (session is null)
         {
             Navigation.NavigateTo("/access-denied");
@@ -100,6 +112,30 @@
         entries = await SessionService.GetSessionHistoryForCurrentUserAsync(SessionId);
     }
 
+    private async Task AddToPortfolio()
+    {
+        if (groupId is null)
+        {
+            return;
+        }
+
+        isCreatingDraft = true;
+
+        try
+        {
+            var portfolioId = await PortfolioService.CreateDraftForCurrentUserAsync(groupId.Value, SessionId);
+            Navigation.NavigateTo($"/portfolio/manage/{portfolioId}");
+        }
+        catch (SessionAccessDeniedException)
+        {
+            Navigation.NavigateTo("/access-denied");
+        }
+        catch
+        {
+            isCreatingDraft = false;
+        }
+    }
+
     private string GetChangeTypeLabel(string changeType) => changeType switch
     {
         "Title" => "Название",