Merge pull request #109: feat: добавить каталог игр и витрину ваншотов (issue #39)

.gitea/workflows/deploy.yml

@@ -6,7 +6,7 @@ on:
       - main 
 
 env:
-  VERSION: 3.3.0
+  VERSION: 3.4.0
 
 jobs:
   # ЧАСТЬ 1: Собираем образы и кладем в Gitea (чтобы делиться с ребятами)

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <Version>3.3.0</Version>
+    <Version>3.4.0</Version>
     <TargetFramework>net10.0</TargetFramework>
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>

README.md

@@ -4,7 +4,7 @@
 
 Проект разработан с упором на производительность, архитектуру Vertical Slice, Native AOT (для бота) и удобство развертывания с использованием .NET Aspire.
 
-**Текущая версия:** `v3.3.0`.
+**Текущая версия:** `v3.4.0`.
 
 ---
 

compose.yaml

@@ -49,7 +49,7 @@ services:
         crond -f
 
   bot:
-    image: git.codeanddice.ru/toutsu/gmrelay-bot:3.3.0
+    image: git.codeanddice.ru/toutsu/gmrelay-bot:3.4.0
     restart: always
     depends_on:
       db:
@@ -67,7 +67,7 @@ services:
       retries: 3
 
   discord:
-    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:3.3.0
+    image: git.codeanddice.ru/toutsu/gmrelay-discord-bot:3.4.0
     restart: always
     depends_on:
       db:
@@ -84,7 +84,7 @@ services:
       retries: 3
 
   web:
-    image: git.codeanddice.ru/toutsu/gmrelay-web:3.3.0
+    image: git.codeanddice.ru/toutsu/gmrelay-web:3.4.0
     restart: always
     depends_on:
       db:

src/GmRelay.Bot/Migrations/V027__add_showcase_fields.sql

@@ -0,0 +1,14 @@
+-- Showcase fields for game catalog / public session browsing.
+
+ALTER TABLE sessions
+    ADD COLUMN is_one_shot BOOLEAN NOT NULL DEFAULT false,
+    ADD COLUMN system VARCHAR(50),
+    ADD COLUMN description TEXT,
+    ADD COLUMN cover_image_url TEXT,
+    ADD COLUMN duration_minutes INTEGER,
+    ADD COLUMN format VARCHAR(20) CHECK (format IN ('Online', 'Offline', 'Hybrid')),
+    ADD COLUMN allow_direct_registration BOOLEAN NOT NULL DEFAULT false;
+
+CREATE INDEX ix_sessions_showcase
+    ON sessions (scheduled_at, system, is_one_shot, format)
+    WHERE is_public = true AND status <> 'Cancelled';

src/GmRelay.Shared/Domain/GameSystem.cs

@@ -0,0 +1,83 @@
+using System.Collections.Frozen;
+
+namespace GmRelay.Shared.Domain;
+
+public enum GameSystem
+{
+    Dnd5e,
+    Pathfinder2e,
+    CallOfCthulhu7e,
+    Shadowdark,
+    OldSchoolEssentials,
+    Dragonbane,
+    BladesInTheDark,
+    Daggerheart,
+    CyberpunkRed,
+    Mothership,
+    AlienRpg,
+    WarhammerFantasy,
+    VampireMasquerade5e,
+    StarWarsFfg,
+    Genesys,
+    SavageWorlds,
+    GURPS,
+    Fate,
+    DungeonWorld,
+    Ironsworn,
+    Other
+}
+
+public static class GameSystemExtensions
+{
+    private static readonly FrozenDictionary<GameSystem, string> DisplayNames =
+        new Dictionary<GameSystem, string>
+        {
+            [GameSystem.Dnd5e] = "D&D 5e",
+            [GameSystem.Pathfinder2e] = "Pathfinder 2e",
+            [GameSystem.CallOfCthulhu7e] = "Call of Cthulhu 7e",
+            [GameSystem.Shadowdark] = "Shadowdark",
+            [GameSystem.OldSchoolEssentials] = "Old School Essentials",
+            [GameSystem.Dragonbane] = "Dragonbane",
+            [GameSystem.BladesInTheDark] = "Blades in the Dark",
+            [GameSystem.Daggerheart] = "Daggerheart",
+            [GameSystem.CyberpunkRed] = "Cyberpunk RED",
+            [GameSystem.Mothership] = "Mothership",
+            [GameSystem.AlienRpg] = "Alien RPG",
+            [GameSystem.WarhammerFantasy] = "Warhammer Fantasy",
+            [GameSystem.VampireMasquerade5e] = "Vampire: The Masquerade 5e",
+            [GameSystem.StarWarsFfg] = "Star Wars (FFG)",
+            [GameSystem.Genesys] = "Genesys",
+            [GameSystem.SavageWorlds] = "Savage Worlds",
+            [GameSystem.GURPS] = "GURPS",
+            [GameSystem.Fate] = "Fate",
+            [GameSystem.DungeonWorld] = "Dungeon World",
+            [GameSystem.Ironsworn] = "Ironsworn",
+            [GameSystem.Other] = "Другое"
+        }.ToFrozenDictionary();
+
+    public static string ToDisplayName(this GameSystem system) =>
+        DisplayNames.TryGetValue(system, out var name) ? name : "Другое";
+
+    public static GameSystem? TryParseFuzzy(string input)
+    {
+        if (string.IsNullOrWhiteSpace(input))
+            return null;
+
+        var normalized = input.Trim().ToLowerInvariant();
+
+        if (Enum.TryParse<GameSystem>(normalized, true, out var exact))
+            return exact;
+
+        foreach (var value in Enum.GetValues<GameSystem>())
+        {
+            if (value == GameSystem.Other)
+                continue;
+
+            var display = value.ToDisplayName().ToLowerInvariant();
+            if (display == normalized || display.Contains(normalized) || normalized.Contains(display))
+                return value;
+        }
+
+        return GameSystem.Other;
+    }
+}

src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionCommand.cs

@@ -1,3 +1,4 @@
+using GmRelay.Shared.Domain;
 using GmRelay.Shared.Platform;
 
 namespace GmRelay.Shared.Features.Sessions.CreateSession;
@@ -9,4 +10,9 @@ public sealed record CreateSessionCommand(
     string Link,
     IReadOnlyList<DateTimeOffset> ScheduledTimes,
     int? MaxPlayers,
-    string? ImageReference);
+    string? ImageReference,
+    GameSystem? System = null,
+    string? Description = null,
+    string? Format = null,
+    int? DurationMinutes = null,
+    bool IsOneShot = false);

src/GmRelay.Shared/Features/Sessions/CreateSession/CreateSessionHandler.cs

@@ -16,6 +16,7 @@ public sealed class CreateSessionHandler(
         await using var connection = await dataSource.OpenConnectionAsync(ct);
         await using var transaction = await connection.BeginTransactionAsync(ct);
 
+        var transactionCommitted = false;
         try
         {
             var platform = command.User.Platform.ToString();
@@ -33,7 +34,7 @@ public sealed class CreateSessionHandler(
                 SET display_name = EXCLUDED.display_name,
                     external_username = EXCLUDED.external_username;
                 """,
-                new { ExternalId = externalUserId, Name = displayName, Username = externalUsername },
+                new { ExternalId = externalUserId, Name = displayName, Username = externalUsername, Platform = platform },
                 transaction);
 
             var existingGroup = await connection.QuerySingleOrDefaultAsync<SessionCreationGroupAccessDto>(
@@ -117,8 +118,8 @@ public sealed class CreateSessionHandler(
             {
                 var sessionId = await connection.ExecuteScalarAsync<Guid>(
                     """
-                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, max_players)
+                    INSERT INTO sessions (batch_id, group_id, title, join_link, scheduled_at, status, max_players, system, description, format, duration_minutes, is_one_shot, cover_image_url)
-                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @MaxPlayers)
+                    VALUES (@BatchId, @GroupId, @Title, @Link, @ScheduledAt, @Status, @MaxPlayers, @System, @Description, @Format, @DurationMinutes, @IsOneShot, @CoverImageUrl)
                     RETURNING id;
                     """,
                     new
@@ -129,7 +130,13 @@ public sealed class CreateSessionHandler(
                         Link = command.Link,
                         ScheduledAt = scheduledAt,
                         Status = SessionStatus.Planned,
-                        MaxPlayers = command.MaxPlayers
+                        MaxPlayers = command.MaxPlayers,
+                        System = command.System?.ToString(),
+                        command.Description,
+                        command.Format,
+                        DurationMinutes = command.DurationMinutes,
+                        IsOneShot = command.IsOneShot,
+                        CoverImageUrl = command.ImageReference
                     },
                     transaction);
 
@@ -137,6 +144,7 @@ public sealed class CreateSessionHandler(
             }
 
             await transaction.CommitAsync(ct);
+            transactionCommitted = true;
 
             var view = SessionBatchViewBuilder.Build(command.Title, sessions, Array.Empty<ParticipantBatchDto>());
 
@@ -150,7 +158,10 @@ public sealed class CreateSessionHandler(
         }
         catch
         {
-            await transaction.RollbackAsync(ct);
+            if (!transactionCommitted)
+            {
+                await transaction.RollbackAsync(ct);
+            }
             throw;
         }
     }

src/GmRelay.Shared/Features/Showcase/ShowcaseFilter.cs

@@ -0,0 +1,23 @@
+namespace GmRelay.Shared.Features.Showcase;
+
+public sealed record ShowcaseFilter(
+    DateFilter Date = DateFilter.All,
+    SeatFilter Seats = SeatFilter.Any,
+    string? System = null,
+    bool? IsOneShot = null,
+    string? Format = null);
+
+public enum DateFilter
+{
+    Today,
+    Tomorrow,
+    ThisWeek,
+    All
+}
+
+public enum SeatFilter
+{
+    Available,
+    Waitlist,
+    Any
+}

src/GmRelay.Shared/Features/Showcase/ShowcaseSessionDto.cs

@@ -0,0 +1,20 @@
+namespace GmRelay.Shared.Features.Showcase;
+
+public sealed record ShowcaseSessionDto(
+    Guid Id,
+    Guid GroupId,
+    string GroupName,
+    string? GroupSlug,
+    string Title,
+    DateTime ScheduledAt,
+    string Status,
+    string? System,
+    bool IsOneShot,
+    string? Format,
+    int? DurationMinutes,
+    string? CoverImageUrl,
+    int? MaxPlayers,
+    int ActivePlayerCount,
+    int WaitlistedPlayerCount,
+    bool AllowDirectRegistration,
+    string? Description);

src/GmRelay.Web/Components/Layout/NavMenu.razor

@@ -73,7 +73,7 @@
                     </button>
                 </form>
 
-                <div class="nav-version">v3.3.0</div>
+                <div class="nav-version">v3.4.0</div>
             </div>
         </Authorized>
         <NotAuthorized>

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

@@ -2,6 +2,9 @@
 @layout PublicLayout
 @inject ISessionStore SessionStore
 @inject NavigationManager Navigation
+@inject AuthenticationStateProvider AuthStateProvider
+@using GmRelay.Shared.Features.Showcase
+@using GmRelay.Web.Services
 
 <PageTitle>@PageTitleText</PageTitle>
 
@@ -30,10 +33,29 @@ else if (session is not null)
         <meta name="description" content="@($"Публичная сессия {session.Title} клуба {session.GroupName} в GM-Relay.")" />
     </HeadContent>
 
+    @if (!string.IsNullOrWhiteSpace(session.CoverImageUrl))
+    {
+        <div class="session-cover-hero" style="background-image: url('@session.CoverImageUrl')"></div>
+    }
+
     <section class="public-hero public-hero-compact">
         <span class="status-badge @GetStatusClass(session.Status)">@TranslateStatus(session.Status)</span>
         <h1>@session.Title</h1>
         <p>@session.GroupName</p>
+        <div class="session-badges">
+            @if (!string.IsNullOrWhiteSpace(session.System))
+            {
+                <span class="status-badge status-info">@GetSystemDisplayName(session.System)</span>
+            }
+            @if (session.IsOneShot)
+            {
+                <span class="status-badge status-warning">Ваншот</span>
+            }
+            @if (!string.IsNullOrWhiteSpace(session.Format))
+            {
+                <span class="status-badge status-neutral">@TranslateFormat(session.Format)</span>
+            }
+        </div>
     </section>
 
     <article class="glass-card public-session-detail">
@@ -50,14 +72,47 @@ else if (session is not null)
                 <span>Статус</span>
                 <strong>@TranslateStatus(session.Status)</strong>
             </div>
+            @if (session.DurationMinutes.HasValue)
+            {
+                <div>
+                    <span>Длительность</span>
+                    <strong>@FormatDuration(session.DurationMinutes.Value)</strong>
+                </div>
+            }
         </div>
 
+        @if (!string.IsNullOrWhiteSpace(session.Description))
+        {
+            <div class="session-description">
+                <h3>Описание</h3>
+                <p>@session.Description</p>
+            </div>
+        }
+
+        @if (registrationResult is not null)
+        {
+            <div class="glass-card @GetRegistrationResultClass()">
+                <p>@registrationResult</p>
+            </div>
+        }
+
         <div class="public-settings-actions">
             @if (!string.IsNullOrWhiteSpace(session.GroupSlug))
             {
                 <a class="btn-gm btn-gm-primary" href="@($"/club/{session.GroupSlug}")">Расписание клуба</a>
             }
             <a class="btn-gm btn-gm-outline" href="@PublicSessionUrl" target="_blank" rel="noopener noreferrer">Ссылка на сессию</a>
+            @if (session.AllowDirectRegistration)
+            {
+                @if (isAuthenticated)
+                {
+                    <button class="btn-gm btn-gm-primary" @onclick="RegisterAsync">Записаться</button>
+                }
+                else
+                {
+                    <a class="btn-gm btn-gm-primary" href="@GetLoginUrl()">Войти, чтобы записаться</a>
+                }
+            }
         </div>
     </article>
 }
@@ -65,8 +120,10 @@ else if (session is not null)
 @code {
     [Parameter] public Guid SessionId { get; set; }
 
-    private WebPublicSession? session;
+    private ShowcaseSessionDto? session;
     private bool loaded;
+    private bool isAuthenticated;
+    private string? registrationResult;
 
     private string PageTitleText => session is null ? "Публичная сессия — GM-Relay" : $"{session.Title} — GM-Relay";
 
@@ -75,11 +132,52 @@ else if (session is not null)
     protected override async Task OnParametersSetAsync()
     {
         loaded = false;
-        session = await SessionStore.GetPublicSessionAsync(SessionId);
+        registrationResult = null;
+        session = await SessionStore.GetShowcaseSessionAsync(SessionId);
+
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        isAuthenticated = authState.User.Identity?.IsAuthenticated ?? false;
+
+        var uri = Navigation.ToAbsoluteUri(Navigation.Uri);
+        var query = Microsoft.AspNetCore.WebUtilities.QueryHelpers.ParseQuery(uri.Query);
+        var shouldRegister = query.TryGetValue("register", out var val) && val == "1";
+
+        if (session is not null && shouldRegister && session.AllowDirectRegistration)
+        {
+            if (isAuthenticated && authState.User.TryGetPlatformIdentity(out var platform, out var externalUserId))
+            {
+                var success = await SessionStore.RegisterFromShowcaseAsync(SessionId, platform, externalUserId, authState.User.Identity?.Name ?? "Игрок");
+                registrationResult = success
+                    ? "Вы успешно записались на игру!"
+                    : "Не удалось записаться. Возможно, места закончились или вы уже зарегистрированы.";
+            }
+            else if (!isAuthenticated)
+            {
+                Navigation.NavigateTo($"/login?returnUrl={Uri.EscapeDataString($"/s/{SessionId}")}");
+                return;
+            }
+        }
+
         loaded = true;
     }
 
-    private static string FormatSeats(WebPublicSession session)
+    private async Task RegisterAsync()
+    {
+        var authState = await AuthStateProvider.GetAuthenticationStateAsync();
+        if (authState.User.TryGetPlatformIdentity(out var platform, out var externalUserId))
+        {
+            var success = await SessionStore.RegisterFromShowcaseAsync(SessionId, platform, externalUserId, authState.User.Identity?.Name ?? "Игрок");
+            registrationResult = success
+                ? "Вы успешно записались на игру!"
+                : "Не удалось записаться. Возможно, места закончились или вы уже зарегистрированы.";
+        }
+    }
+
+    private string GetLoginUrl() => $"/login?returnUrl={Uri.EscapeDataString($"/s/{SessionId}?register=1")}";
+
+    private string GetRegistrationResultClass() => registrationResult?.StartsWith("Вы успешно") == true ? "status-success-bg" : "status-warning-bg";
+
+    private static string FormatSeats(ShowcaseSessionDto session)
     {
         var seats = session.MaxPlayers.HasValue
             ? $"{session.ActivePlayerCount}/{session.MaxPlayers.Value}"
@@ -90,6 +188,35 @@ else if (session is not null)
             : seats;
     }
 
+    private static string FormatDuration(int minutes)
+    {
+        if (minutes < 60)
+            return $"{minutes} мин";
+
+        var hours = minutes / 60;
+        var mins = minutes % 60;
+        return mins > 0 ? $"{hours} ч {mins} мин" : $"{hours} ч";
+    }
+
+    private static string GetSystemDisplayName(string? system)
+    {
+        if (string.IsNullOrWhiteSpace(system))
+            return system ?? string.Empty;
+
+        if (Enum.TryParse<GameSystem>(system, out var gs))
+            return gs.ToDisplayName();
+
+        return system;
+    }
+
+    private static string TranslateFormat(string format) => format switch
+    {
+        "Online" => "Онлайн",
+        "Offline" => "Офлайн",
+        "Hybrid" => "Гибрид",
+        _ => format
+    };
+
     private static string GetStatusClass(string status) => status switch
     {
         SessionStatus.Confirmed => "status-success",

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

@@ -0,0 +1,438 @@
+@page "/showcase"
+@layout PublicLayout
+@inject ISessionStore SessionStore
+@inject NavigationManager Navigation
+@using GmRelay.Shared.Features.Showcase
+
+<PageTitle>Каталог игр — GM-Relay</PageTitle>
+
+<HeadContent>
+    <meta name="description" content="Каталог настольных ролевых игр GM-Relay. Найдите игру по душе — ваншоты, кампании, онлайн и офлайн." />
+</HeadContent>
+
+<section class="public-hero">
+    <h1>Каталог игр</h1>
+    <p>Найдите настольную ролевую игру по душе — ваншоты, кампании, онлайн и офлайн.</p>
+</section>
+
+<section class="glass-card showcase-filters">
+    <div class="showcase-filter-group">
+        <span class="showcase-filter-label">Когда</span>
+        <div class="showcase-filter-buttons">
+            <button class="btn-gm @(filter.Date == DateFilter.Today ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetDate(DateFilter.Today)">Сегодня</button>
+            <button class="btn-gm @(filter.Date == DateFilter.Tomorrow ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetDate(DateFilter.Tomorrow)">Завтра</button>
+            <button class="btn-gm @(filter.Date == DateFilter.ThisWeek ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetDate(DateFilter.ThisWeek)">На этой неделе</button>
+            <button class="btn-gm @(filter.Date == DateFilter.All ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetDate(DateFilter.All)">Все</button>
+        </div>
+    </div>
+
+    <div class="showcase-filter-group">
+        <span class="showcase-filter-label">Места</span>
+        <div class="showcase-filter-buttons">
+            <button class="btn-gm @(filter.Seats == SeatFilter.Available ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetSeats(SeatFilter.Available)">Есть места</button>
+            <button class="btn-gm @(filter.Seats == SeatFilter.Waitlist ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetSeats(SeatFilter.Waitlist)">Лист ожидания</button>
+            <button class="btn-gm @(filter.Seats == SeatFilter.Any ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetSeats(SeatFilter.Any)">Любые</button>
+        </div>
+    </div>
+
+    <div class="showcase-filter-group">
+        <label class="showcase-filter-label" for="system-filter">Система</label>
+        <select id="system-filter" class="gm-form-control showcase-filter-select" aria-label="Система" @onchange="OnSystemChanged">
+            <option value="" selected="@(filter.System is null)">Любая</option>
+            @foreach (var system in Enum.GetValues<GameSystem>())
+            {
+                var name = system.ToString();
+                <option value="@name" selected="@(filter.System == name)">@system.ToDisplayName()</option>
+            }
+        </select>
+    </div>
+
+    <div class="showcase-filter-group">
+        <span class="showcase-filter-label">Тип</span>
+        <div class="showcase-filter-buttons">
+            <button class="btn-gm @(filter.IsOneShot == true ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetOneShot(true)">Ваншот</button>
+            <button class="btn-gm @(filter.IsOneShot == false ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetOneShot(false)">Кампания</button>
+            <button class="btn-gm @(filter.IsOneShot is null ? "btn-gm-primary" : "btn-gm-outline")" @onclick="() => SetOneShot(null)">Любое</button>
+        </div>
+    </div>
+
+    <div class="showcase-filter-group">
+        <span class="showcase-filter-label">Формат</span>
+        <div class="showcase-filter-buttons">
+            <button class="btn-gm @(filter.Format == "Online" ? "btn-gm-primary" : "btn-gm-outline")" @onclick="@(() => SetFormat("Online"))">Онлайн</button>
+            <button class="btn-gm @(filter.Format == "Offline" ? "btn-gm-primary" : "btn-gm-outline")" @onclick="@(() => SetFormat("Offline"))">Офлайн</button>
+            <button class="btn-gm @(filter.Format == "Hybrid" ? "btn-gm-primary" : "btn-gm-outline")" @onclick="@(() => SetFormat("Hybrid"))">Гибрид</button>
+            <button class="btn-gm @(filter.Format is null ? "btn-gm-primary" : "btn-gm-outline")" @onclick="@(() => SetFormat((string?)null))">Любой</button>
+        </div>
+    </div>
+</section>
+
+@if (loading && sessions.Count == 0)
+{
+    <div class="showcase-grid">
+        @for (var i = 0; i < 6; i++)
+        {
+            <div class="glass-card showcase-card showcase-skeleton">
+                <div class="skeleton showcase-skeleton-image"></div>
+                <div class="showcase-card-body">
+                    <div class="skeleton skeleton-text" style="width: 70%;"></div>
+                    <div class="skeleton skeleton-text" style="width: 45%;"></div>
+                    <div class="skeleton skeleton-text" style="width: 55%;"></div>
+                </div>
+            </div>
+        }
+    </div>
+}
+else if (!loading && sessions.Count == 0)
+{
+    <div class="glass-card public-empty-state">
+        <h2>Игры не найдены</h2>
+        <p>Попробуйте изменить фильтры или загляните позже — новые сессии появляются каждый день.</p>
+    </div>
+}
+else
+{
+    <div class="showcase-grid">
+        @foreach (var session in sessions)
+        {
+            <article class="glass-card showcase-card animate-fade-in">
+                <div class="showcase-card-image"
+                     style="@(string.IsNullOrWhiteSpace(session.CoverImageUrl)
+                         ? $"background: {GetGradientStyle(session.Id)}; background-size: cover; background-position: center;"
+                         : $"background-image: url({session.CoverImageUrl}); background-size: cover; background-position: center;")">
+                </div>
+                <div class="showcase-card-body">
+                    <div class="showcase-card-badges">
+                        @if (!string.IsNullOrWhiteSpace(session.System))
+                        {
+                            <span class="status-badge status-info">@GetSystemDisplayName(session.System)</span>
+                        }
+                        @if (session.IsOneShot)
+                        {
+                            <span class="status-badge status-warning">Ваншот</span>
+                        }
+                        @if (!string.IsNullOrWhiteSpace(session.Format))
+                        {
+                            <span class="status-badge status-neutral">@TranslateFormat(session.Format)</span>
+                        }
+                    </div>
+                    <h2 class="showcase-card-title">@session.Title</h2>
+                    <div class="showcase-card-meta">
+                        <span>@session.ScheduledAt.FormatMoscow()</span>
+                        @if (session.DurationMinutes.HasValue)
+                        {
+                            <span>@FormatDuration(session.DurationMinutes.Value)</span>
+                        }
+                    </div>
+                    <div class="showcase-card-seats">
+                        <span>@FormatSeats(session)</span>
+                    </div>
+                    <div class="showcase-card-club">
+                        <span>@session.GroupName</span>
+                    </div>
+                    <div class="showcase-card-actions">
+                        <a class="btn-gm btn-gm-outline" href="@($"/s/{session.Id}")">Подробнее</a>
+                        @if (session.AllowDirectRegistration)
+                        {
+                            <a class="btn-gm btn-gm-primary" href="@($"/s/{session.Id}?register=1")">Записаться</a>
+                        }
+                    </div>
+                </div>
+            </article>
+        }
+    </div>
+
+    @if (hasMore)
+    {
+        <div class="showcase-load-more">
+            <button class="btn-gm btn-gm-primary" @onclick="LoadMoreAsync" disabled="@loading">
+                @if (loading)
+                {
+                    <span>Загрузка...</span>
+                }
+                else
+                {
+                    <span>Загрузить ещё</span>
+                }
+            </button>
+        </div>
+    }
+}
+
+<style>
+    .showcase-filters {
+        display: flex;
+        flex-wrap: wrap;
+        gap: 1rem 1.5rem;
+        margin-bottom: 1.5rem;
+        padding: 1.25rem;
+    }
+
+    .showcase-filter-group {
+        display: flex;
+        flex-direction: column;
+        gap: 0.375rem;
+    }
+
+    .showcase-filter-label {
+        font-size: 0.75rem;
+        font-weight: 600;
+        color: var(--text-muted);
+        text-transform: uppercase;
+        letter-spacing: 0.05em;
+        font-family: 'Jura', sans-serif;
+    }
+
+    .showcase-filter-buttons {
+        display: flex;
+        flex-wrap: wrap;
+        gap: 0.375rem;
+    }
+
+    .showcase-filter-buttons .btn-gm {
+        padding: 0.375rem 0.75rem;
+        font-size: 0.8125rem;
+    }
+
+    .showcase-filter-select {
+        min-width: 180px;
+        width: auto;
+    }
+
+    .showcase-grid {
+        display: grid;
+        grid-template-columns: 1fr;
+        gap: 1rem;
+        margin-bottom: 1.5rem;
+    }
+
+    @@media (min-width: 640px) {
+        .showcase-grid {
+            grid-template-columns: repeat(2, 1fr);
+        }
+    }
+
+    @@media (min-width: 1024px) {
+        .showcase-grid {
+            grid-template-columns: repeat(3, 1fr);
+        }
+    }
+
+    .showcase-card {
+        padding: 0;
+        overflow: hidden;
+        display: flex;
+        flex-direction: column;
+    }
+
+    .showcase-card-image {
+        height: 160px;
+        background-size: cover;
+        background-position: center;
+    }
+
+    .showcase-card-body {
+        padding: 1rem;
+        display: flex;
+        flex-direction: column;
+        gap: 0.5rem;
+        flex: 1;
+    }
+
+    .showcase-card-badges {
+        display: flex;
+        flex-wrap: wrap;
+        gap: 0.375rem;
+    }
+
+    .showcase-card-title {
+        font-size: 1.0625rem;
+        margin: 0;
+        font-family: 'Cinzel', serif;
+        overflow-wrap: anywhere;
+    }
+
+    .showcase-card-meta,
+    .showcase-card-seats,
+    .showcase-card-club {
+        font-size: 0.8125rem;
+        color: var(--text-secondary);
+        font-family: 'Jura', sans-serif;
+    }
+
+    .showcase-card-club {
+        color: var(--text-muted);
+    }
+
+    .showcase-card-actions {
+        margin-top: auto;
+        padding-top: 0.75rem;
+        display: flex;
+        gap: 0.5rem;
+        flex-wrap: wrap;
+    }
+
+    .showcase-card-actions .btn-gm {
+        flex: 1;
+        justify-content: center;
+    }
+
+    .showcase-load-more {
+        display: flex;
+        justify-content: center;
+        margin-bottom: 2rem;
+    }
+
+    .showcase-skeleton {
+        padding: 0;
+        overflow: hidden;
+    }
+
+    .showcase-skeleton-image {
+        height: 160px;
+        border-radius: 0;
+    }
+
+    .showcase-skeleton .showcase-card-body {
+        padding: 1rem;
+    }
+
+    .showcase-skeleton .skeleton-text {
+        margin-bottom: 0.5rem;
+    }
+</style>
+
+@code {
+    private ShowcaseFilter filter = new();
+    private List<ShowcaseSessionDto> sessions = new();
+    private bool loading;
+    private bool hasMore;
+    private int page = 1;
+    private const int PageSize = 12;
+
+    protected override async Task OnInitializedAsync()
+    {
+        await LoadAsync();
+    }
+
+    private async Task LoadAsync()
+    {
+        loading = true;
+        try
+        {
+            page = 1;
+            sessions.Clear();
+            var results = await SessionStore.GetShowcaseSessionsAsync(filter, page, PageSize);
+            sessions.AddRange(results);
+            hasMore = results.Count == PageSize;
+        }
+        finally
+        {
+            loading = false;
+        }
+    }
+
+    private async Task LoadMoreAsync()
+    {
+        if (loading)
+            return;
+
+        loading = true;
+        try
+        {
+            page++;
+            var results = await SessionStore.GetShowcaseSessionsAsync(filter, page, PageSize);
+            sessions.AddRange(results);
+            hasMore = results.Count == PageSize;
+        }
+        finally
+        {
+            loading = false;
+        }
+    }
+
+    private async Task OnFilterChanged()
+    {
+        await LoadAsync();
+    }
+
+    private async Task SetDate(DateFilter value)
+    {
+        filter = filter with { Date = value };
+        await OnFilterChanged();
+    }
+
+    private async Task SetSeats(SeatFilter value)
+    {
+        filter = filter with { Seats = value };
+        await OnFilterChanged();
+    }
+
+    private async Task OnSystemChanged(ChangeEventArgs e)
+    {
+        var value = e.Value?.ToString();
+        filter = filter with { System = string.IsNullOrWhiteSpace(value) ? null : value };
+        await OnFilterChanged();
+    }
+
+    private async Task SetOneShot(bool? value)
+    {
+        filter = filter with { IsOneShot = value };
+        await OnFilterChanged();
+    }
+
+    private async Task SetFormat(string? value)
+    {
+        filter = filter with { Format = value };
+        await OnFilterChanged();
+    }
+
+    private static string GetGradientStyle(Guid id)
+    {
+        var bytes = id.ToByteArray();
+        var hue1 = bytes[0] % 360;
+        var hue2 = (bytes[1] + 120) % 360;
+        return $"linear-gradient(135deg, hsl({hue1}, 55%, 28%) 0%, hsl({hue2}, 55%, 20%) 100%)";
+    }
+
+    private static string GetSystemDisplayName(string? system)
+    {
+        if (string.IsNullOrWhiteSpace(system))
+            return system ?? string.Empty;
+
+        if (Enum.TryParse<GameSystem>(system, out var gs))
+            return gs.ToDisplayName();
+
+        return system;
+    }
+
+    private static string FormatSeats(ShowcaseSessionDto session)
+    {
+        var seats = session.MaxPlayers.HasValue
+            ? $"{session.ActivePlayerCount}/{session.MaxPlayers.Value}"
+            : $"{session.ActivePlayerCount} игроков";
+
+        if (session.WaitlistedPlayerCount > 0)
+            seats += $", ожидание {session.WaitlistedPlayerCount}";
+
+        return seats;
+    }
+
+    private static string FormatDuration(int minutes)
+    {
+        if (minutes < 60)
+            return $"{minutes} мин";
+
+        var hours = minutes / 60;
+        var mins = minutes % 60;
+        return mins > 0 ? $"{hours} ч {mins} мин" : $"{hours} ч";
+    }
+
+    private static string TranslateFormat(string format) => format switch
+    {
+        "Online" => "Онлайн",
+        "Offline" => "Офлайн",
+        "Hybrid" => "Гибрид",
+        _ => format
+    };
+}

src/GmRelay.Web/Services/ISessionStore.cs

@@ -1,4 +1,5 @@
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Showcase;
 
 namespace GmRelay.Web.Services;
 
@@ -91,6 +92,11 @@ public interface ISessionStore
     Task LinkIdentityAsync(string currentPlatform, string currentExternalUserId, string targetPlatform, string targetExternalUserId, string? currentName);
     Task UnlinkIdentityAsync(string currentPlatform, string currentExternalUserId, string targetPlatform, string targetExternalUserId);
     Task UpsertPlayerAsync(string platform, string externalUserId, string displayName, string? avatarUrl);
+
+    // --- Showcase / game catalog (issue #39) ---
+    Task<IReadOnlyList<ShowcaseSessionDto>> GetShowcaseSessionsAsync(ShowcaseFilter filter, int page, int pageSize);
+    Task<ShowcaseSessionDto?> GetShowcaseSessionAsync(Guid sessionId);
+    Task<bool> RegisterFromShowcaseAsync(Guid sessionId, string platform, string externalUserId, string displayName);
 }
 
 public sealed record LinkedIdentity(

src/GmRelay.Web/Services/SessionService.cs

@@ -1,5 +1,6 @@
 using Dapper;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Showcase;
 using GmRelay.Shared.Rendering;
 using Npgsql;
 using Telegram.Bot;
@@ -110,6 +111,24 @@ internal sealed record WebBatchSessionRow(
 internal sealed record WebTemplateGroupDto(long TelegramChatId);
 internal sealed record WebTemplateTopicDestination(int? MessageThreadId, bool TopicCreatedByBot);
 internal sealed record WebPublicGroupRow(Guid GroupId, string Name, string Slug);
+internal sealed record ShowcaseSessionRow(
+    Guid Id,
+    Guid GroupId,
+    string GroupName,
+    string? GroupSlug,
+    string Title,
+    DateTime ScheduledAt,
+    string Status,
+    string? System,
+    bool IsOneShot,
+    string? Format,
+    int? DurationMinutes,
+    string? CoverImageUrl,
+    int? MaxPlayers,
+    int ActivePlayerCount,
+    int WaitlistedPlayerCount,
+    bool AllowDirectRegistration,
+    string? Description);
 
 public sealed class SessionService(
     NpgsqlDataSource dataSource,
@@ -362,6 +381,228 @@ public sealed class SessionService(
             });
     }
 
+    public async Task<IReadOnlyList<ShowcaseSessionDto>> GetShowcaseSessionsAsync(ShowcaseFilter filter, int page, int pageSize)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        var rows = await conn.QueryAsync<ShowcaseSessionRow>(
+            """
+            SELECT s.id AS Id,
+                   s.group_id AS GroupId,
+                   COALESCE(NULLIF(g.name, g.external_group_id), latest_session.title, g.name) AS GroupName,
+                   g.public_slug AS GroupSlug,
+                   s.title AS Title,
+                   s.scheduled_at AS ScheduledAt,
+                   s.status AS Status,
+                   s.system AS System,
+                   s.is_one_shot AS IsOneShot,
+                   s.format AS Format,
+                   s.duration_minutes AS DurationMinutes,
+                   s.cover_image_url AS CoverImageUrl,
+                   s.max_players AS MaxPlayers,
+                   COALESCE(active_counts.count, 0)::int AS ActivePlayerCount,
+                   COALESCE(waitlist_counts.count, 0)::int AS WaitlistedPlayerCount,
+                   s.allow_direct_registration AS AllowDirectRegistration,
+                   s.description AS Description
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            LEFT JOIN LATERAL (
+                SELECT recent.title
+                FROM sessions recent
+                WHERE recent.group_id = g.id
+                ORDER BY recent.scheduled_at DESC
+                LIMIT 1
+            ) latest_session ON true
+            LEFT JOIN LATERAL (
+                SELECT COUNT(*) AS count
+                FROM session_participants sp
+                WHERE sp.session_id = s.id
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Active
+            ) active_counts ON true
+            LEFT JOIN LATERAL (
+                SELECT COUNT(*) AS count
+                FROM session_participants sp
+                WHERE sp.session_id = s.id
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Waitlisted
+            ) waitlist_counts ON true
+            WHERE g.public_schedule_enabled = true
+              AND g.public_slug IS NOT NULL
+              AND s.is_public = true
+              AND s.scheduled_at > now() - interval '4 hours'
+              AND s.status <> @Cancelled
+              AND (
+                  @DateFilter = 'All'
+                  OR (@DateFilter = 'Today' AND s.scheduled_at >= CURRENT_DATE AND s.scheduled_at < CURRENT_DATE + interval '1 day')
+                  OR (@DateFilter = 'Tomorrow' AND s.scheduled_at >= CURRENT_DATE + interval '1 day' AND s.scheduled_at < CURRENT_DATE + interval '2 days')
+                  OR (@DateFilter = 'ThisWeek' AND s.scheduled_at >= CURRENT_DATE AND s.scheduled_at < CURRENT_DATE + interval '7 days')
+              )
+              AND (
+                  @SeatFilter = 'Any'
+                  OR (@SeatFilter = 'Available' AND (s.max_players IS NULL OR active_counts.count < s.max_players))
+                  OR (@SeatFilter = 'Waitlist' AND (s.max_players IS NOT NULL AND active_counts.count >= s.max_players))
+              )
+              AND (@System IS NULL OR s.system = @System)
+              AND (@IsOneShot IS NULL OR s.is_one_shot = @IsOneShot)
+              AND (@Format IS NULL OR s.format = @Format)
+            ORDER BY s.scheduled_at ASC
+            LIMIT @PageSize OFFSET @Offset
+            """,
+            new
+            {
+                Active = ParticipantRegistrationStatus.Active,
+                Waitlisted = ParticipantRegistrationStatus.Waitlisted,
+                Cancelled = SessionStatus.Cancelled,
+                DateFilter = filter.Date.ToString(),
+                SeatFilter = filter.Seats.ToString(),
+                filter.System,
+                filter.IsOneShot,
+                filter.Format,
+                PageSize = pageSize,
+                Offset = (page - 1) * pageSize
+            });
+
+        return rows.Select(r => new ShowcaseSessionDto(
+            r.Id, r.GroupId, r.GroupName, r.GroupSlug, r.Title, r.ScheduledAt, r.Status,
+            r.System, r.IsOneShot, r.Format, r.DurationMinutes, r.CoverImageUrl,
+            r.MaxPlayers, r.ActivePlayerCount, r.WaitlistedPlayerCount, r.AllowDirectRegistration,
+            r.Description)).ToList();
+    }
+
+    public async Task<ShowcaseSessionDto?> GetShowcaseSessionAsync(Guid sessionId)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        var row = await conn.QuerySingleOrDefaultAsync<ShowcaseSessionRow>(
+            """
+            SELECT s.id AS Id,
+                   s.group_id AS GroupId,
+                   COALESCE(NULLIF(g.name, g.external_group_id), latest_session.title, g.name) AS GroupName,
+                   g.public_slug AS GroupSlug,
+                   s.title AS Title,
+                   s.scheduled_at AS ScheduledAt,
+                   s.status AS Status,
+                   s.system AS System,
+                   s.is_one_shot AS IsOneShot,
+                   s.format AS Format,
+                   s.duration_minutes AS DurationMinutes,
+                   s.cover_image_url AS CoverImageUrl,
+                   s.max_players AS MaxPlayers,
+                   COALESCE(active_counts.count, 0)::int AS ActivePlayerCount,
+                   COALESCE(waitlist_counts.count, 0)::int AS WaitlistedPlayerCount,
+                   s.allow_direct_registration AS AllowDirectRegistration,
+                   s.description AS Description
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            LEFT JOIN LATERAL (
+                SELECT recent.title
+                FROM sessions recent
+                WHERE recent.group_id = g.id
+                ORDER BY recent.scheduled_at DESC
+                LIMIT 1
+            ) latest_session ON true
+            LEFT JOIN LATERAL (
+                SELECT COUNT(*) AS count
+                FROM session_participants sp
+                WHERE sp.session_id = s.id
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Active
+            ) active_counts ON true
+            LEFT JOIN LATERAL (
+                SELECT COUNT(*) AS count
+                FROM session_participants sp
+                WHERE sp.session_id = s.id
+                  AND sp.is_gm = false
+                  AND sp.registration_status = @Waitlisted
+            ) waitlist_counts ON true
+            WHERE s.id = @SessionId
+              AND g.public_schedule_enabled = true
+              AND g.public_slug IS NOT NULL
+              AND s.is_public = true
+              AND s.scheduled_at > now() - interval '4 hours'
+              AND s.status <> @Cancelled
+            """,
+            new
+            {
+                SessionId = sessionId,
+                Active = ParticipantRegistrationStatus.Active,
+                Waitlisted = ParticipantRegistrationStatus.Waitlisted,
+                Cancelled = SessionStatus.Cancelled
+            });
+
+        if (row is null)
+            return null;
+
+        return new ShowcaseSessionDto(
+            row.Id, row.GroupId, row.GroupName, row.GroupSlug, row.Title, row.ScheduledAt, row.Status,
+            row.System, row.IsOneShot, row.Format, row.DurationMinutes, row.CoverImageUrl,
+            row.MaxPlayers, row.ActivePlayerCount, row.WaitlistedPlayerCount, row.AllowDirectRegistration,
+            row.Description);
+    }
+
+    public async Task<bool> RegisterFromShowcaseAsync(Guid sessionId, string platform, string externalUserId, string displayName)
+    {
+        await using var conn = await dataSource.OpenConnectionAsync();
+        await using var transaction = await conn.BeginTransactionAsync();
+
+        var session = await conn.QuerySingleOrDefaultAsync<dynamic>(
+            """
+            SELECT s.id, s.max_players AS MaxPlayers, s.allow_direct_registration AS AllowDirectRegistration
+            FROM sessions s
+            JOIN game_groups g ON g.id = s.group_id
+            WHERE s.id = @SessionId
+              AND s.is_public = true
+              AND g.public_schedule_enabled = true
+              AND g.public_slug IS NOT NULL
+              AND s.scheduled_at > now() - interval '4 hours'
+              AND s.status <> @Cancelled
+            FOR UPDATE OF s
+            """,
+            new { SessionId = sessionId, Cancelled = SessionStatus.Cancelled },
+            transaction);
+
+        if (session is null || !(bool)session.allowdirectregistration)
+        {
+            await transaction.RollbackAsync();
+            return false;
+        }
+
+        var playerId = await _UpsertPlayerAndGetIdAsync(conn, platform, externalUserId, displayName, null, transaction);
+
+        var registrationStatus = SessionCapacityRules.DecideJoinStatus(
+            (int?)session.maxplayers,
+            await conn.ExecuteScalarAsync<int>(
+                """
+                SELECT COUNT(*) FROM session_participants
+                WHERE session_id = @SessionId AND is_gm = false AND registration_status = @Active
+                """,
+                new { SessionId = sessionId, Active = ParticipantRegistrationStatus.Active },
+                transaction));
+
+        var inserted = await conn.ExecuteAsync(
+            """
+            INSERT INTO session_participants (session_id, player_id, is_gm, rsvp_status, registration_status)
+            VALUES (@SessionId, @PlayerId, false, @Pending, @RegistrationStatus)
+            ON CONFLICT (session_id, player_id) DO NOTHING
+            """,
+            new
+            {
+                SessionId = sessionId,
+                PlayerId = playerId,
+                Pending = RsvpStatus.Pending,
+                RegistrationStatus = registrationStatus
+            },
+            transaction);
+
+        if (inserted == 0)
+        {
+            await transaction.RollbackAsync();
+            return false;
+        }
+
+        await transaction.CommitAsync();
+        return true;
+    }
+
     public async Task<bool> IsGroupManagerAsync(Guid groupId, string platform, string externalUserId)
     {
         await using var conn = await dataSource.OpenConnectionAsync();

src/GmRelay.Web/wwwroot/app.css

@@ -1795,6 +1795,24 @@ body.telegram-mini-app .session-card-mobile {
     color: var(--text-primary);
 }
 
+.session-description {
+    margin: 1.25rem 0;
+    padding: 1rem;
+    background: var(--bg-surface);
+    border: 1px solid var(--border-color);
+    border-radius: var(--radius-sm);
+}
+
+.session-description h3 {
+    margin-bottom: 0.5rem;
+    font-size: 1rem;
+}
+
+.session-description p {
+    margin: 0;
+    color: var(--text-secondary);
+}
+
 .public-empty-state h2 {
     font-size: 1.125rem;
     margin-bottom: 0.5rem;

tests/GmRelay.Bot.Tests/Discord/DiscordProjectStructureTests.cs

@@ -62,7 +62,7 @@ public sealed class DiscordProjectStructureTests
         var prChecks = File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "pr-checks.yml"));
         var deploy = File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml"));
 
-        Assert.Contains("gmrelay-discord-bot:3.3.0", compose);
+        Assert.Contains("gmrelay-discord-bot:3.4.0", compose);
         Assert.Contains("Discord__Token=${DISCORD_BOT_TOKEN:?Set DISCORD_BOT_TOKEN in .env}", compose);
         Assert.Contains("src/GmRelay.DiscordBot/Dockerfile", deploy);
         Assert.Contains("DISCORD_BOT_TOKEN", deploy);
@@ -76,13 +76,13 @@ public sealed class DiscordProjectStructureTests
     {
         var repoRoot = GetRepoRoot();
 
-        Assert.Contains("<Version>3.3.0</Version>", File.ReadAllText(Path.Combine(repoRoot, "Directory.Build.props")));
+        Assert.Contains("<Version>3.4.0</Version>", File.ReadAllText(Path.Combine(repoRoot, "Directory.Build.props")));
-        Assert.Contains("VERSION: 3.3.0", File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml")));
+        Assert.Contains("VERSION: 3.4.0", File.ReadAllText(Path.Combine(repoRoot, ".gitea", "workflows", "deploy.yml")));
-        Assert.Contains("gmrelay-bot:3.3.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+        Assert.Contains("gmrelay-bot:3.4.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
-        Assert.Contains("gmrelay-web:3.3.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+        Assert.Contains("gmrelay-web:3.4.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
-        Assert.Contains("gmrelay-discord-bot:3.3.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
+        Assert.Contains("gmrelay-discord-bot:3.4.0", File.ReadAllText(Path.Combine(repoRoot, "compose.yaml")));
         Assert.Contains(
-            "v3.3.0",
+            "v3.4.0",
             File.ReadAllText(Path.Combine(repoRoot, "src", "GmRelay.Web", "Components", "Layout", "NavMenu.razor")));
     }
 

tests/GmRelay.Bot.Tests/Domain/GameSystemTests.cs

@@ -0,0 +1,65 @@
+using GmRelay.Shared.Domain;
+
+namespace GmRelay.Bot.Tests.Domain;
+
+public sealed class GameSystemTests
+{
+    [Theory]
+    [InlineData("Dnd5e", GameSystem.Dnd5e)]
+    [InlineData("D&D", GameSystem.Dnd5e)]
+    [InlineData("dnd5e", GameSystem.Dnd5e)]
+    [InlineData("  dnd5e  ", GameSystem.Dnd5e)]
+    [InlineData("D&D 5e", GameSystem.Dnd5e)]
+    [InlineData("pathfinder", GameSystem.Pathfinder2e)]
+    [InlineData("call of cthulhu", GameSystem.CallOfCthulhu7e)]
+    [InlineData("shadow", GameSystem.Shadowdark)]
+    [InlineData("dark", GameSystem.Shadowdark)]
+    [InlineData("unknown xyz", GameSystem.Other)]
+    public void TryParseFuzzy_ShouldMapInputToExpectedSystem(string input, GameSystem expected)
+    {
+        var result = GameSystemExtensions.TryParseFuzzy(input);
+
+        Assert.Equal(expected, result);
+    }
+
+    [Theory]
+    [InlineData("днд")]
+    [InlineData("колова")]
+    public void TryParseFuzzy_ShouldReturnOtherForUnmatchedCyrillicInput(string input)
+    {
+        var result = GameSystemExtensions.TryParseFuzzy(input);
+
+        Assert.Equal(GameSystem.Other, result);
+    }
+
+    [Fact]
+    public void TryParseFuzzy_ShouldReturnNullForNullInput()
+    {
+        var result = GameSystemExtensions.TryParseFuzzy(null!);
+
+        Assert.Null(result);
+    }
+
+    [Theory]
+    [InlineData("")]
+    [InlineData("   ")]
+    public void TryParseFuzzy_ShouldReturnNullForEmptyOrWhitespaceInput(string input)
+    {
+        var result = GameSystemExtensions.TryParseFuzzy(input);
+
+        Assert.Null(result);
+    }
+
+    [Theory]
+    [InlineData(GameSystem.Dnd5e, "D&D 5e")]
+    [InlineData(GameSystem.Other, "Другое")]
+    [InlineData(GameSystem.Pathfinder2e, "Pathfinder 2e")]
+    [InlineData(GameSystem.Shadowdark, "Shadowdark")]
+    [InlineData((GameSystem)999, "Другое")]
+    public void ToDisplayName_ShouldReturnExpectedName(GameSystem system, string expected)
+    {
+        var result = system.ToDisplayName();
+
+        Assert.Equal(expected, result);
+    }
+}

tests/GmRelay.Bot.Tests/Features/Sessions/CreateSession/SessionCapacityRulesTests.cs

@@ -21,6 +21,30 @@ public sealed class SessionCapacityRulesTests
         Assert.Equal(ParticipantRegistrationStatus.Waitlisted, status);
     }
 
+    [Fact]
+    public void DecideJoinStatus_ShouldReturnActive_WhenUnlimitedSeats()
+    {
+        var status = SessionCapacityRules.DecideJoinStatus(maxPlayers: null, activeParticipants: 5);
+
+        Assert.Equal(ParticipantRegistrationStatus.Active, status);
+    }
+
+    [Fact]
+    public void DecideJoinStatus_ShouldReturnWaitlisted_WhenOverCapacity()
+    {
+        var status = SessionCapacityRules.DecideJoinStatus(maxPlayers: 3, activeParticipants: 5);
+
+        Assert.Equal(ParticipantRegistrationStatus.Waitlisted, status);
+    }
+
+    [Fact]
+    public void DecideJoinStatus_ShouldReturnActive_WhenZeroActiveAndPositiveMax()
+    {
+        var status = SessionCapacityRules.DecideJoinStatus(maxPlayers: 1, activeParticipants: 0);
+
+        Assert.Equal(ParticipantRegistrationStatus.Active, status);
+    }
+
     [Fact]
     public void CanPromoteWaitlistedPlayer_ShouldRequireWaitlistAndFreeSeat()
     {

tests/GmRelay.Bot.Tests/Web/AuthorizedSessionServiceTests.cs

@@ -2,6 +2,7 @@ using GmRelay.Web.Services;
 using System.Security.Claims;
 using Microsoft.AspNetCore.Http;
 using GmRelay.Shared.Domain;
+using GmRelay.Shared.Features.Showcase;
 
 namespace GmRelay.Bot.Tests.Web;
 
@@ -1209,6 +1210,15 @@ public sealed class AuthorizedSessionServiceTests
         public Task UpsertPlayerAsync(string platform, string externalUserId, string displayName, string? avatarUrl) =>
             Task.CompletedTask;
 
+        public Task<IReadOnlyList<ShowcaseSessionDto>> GetShowcaseSessionsAsync(ShowcaseFilter filter, int page, int pageSize) =>
+            Task.FromResult<IReadOnlyList<ShowcaseSessionDto>>([]);
+
+        public Task<ShowcaseSessionDto?> GetShowcaseSessionAsync(Guid sessionId) =>
+            Task.FromResult<ShowcaseSessionDto?>(null);
+
+        public Task<bool> RegisterFromShowcaseAsync(Guid sessionId, string platform, string externalUserId, string displayName) =>
+            Task.FromResult(false);
+
         private bool IsManager(Guid groupId, long telegramId) =>
             IsOwner(groupId, telegramId) ||
             managers.Any(manager => manager.GroupId == groupId && manager.TelegramId == telegramId);