Add winner archive, host image upload and live demo data

Deliver the demo-ready feature set and seed data so the live site can be
presented end to end:

- Winner archive: ArchivedWinner domain, admin CRUD endpoints/view/manager
  and public archive surface, backed by AddArchivedWinners migration.
- Host presentation: host image upload and artist name on SiteSettings with
  public image endpoint and supporting migrations.
- Clip submissions: idempotent table-ensure migration plus current-season
  demo clips for review workflows.
- Demo seed data: sponsors, share links and 2025 archived winners, with a
  guarded RemoveDemoSeasons cleanup; all seeds guard against real data.
- EnsureRuntimeSchemaParity migration to align runtime schema defensively.
- Admin/home UI refinements; remove unused team role permissions modal and
  dead share-quick-links code.

All seed and schema migrations are idempotent (IF NOT EXISTS / ON CONFLICT)
and skip when real season data is present.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Backend/Endpoints/AdminArchiveEndpoints.cs

@@ -0,0 +1,249 @@
+using Backend.Common;
+using Backend.Contracts;
+using Backend.Data;
+using Backend.Domain;
+using Backend.Security;
+using Backend.Services;
+using Microsoft.EntityFrameworkCore;
+
+namespace Backend.Endpoints;
+
+public static class AdminArchiveEndpoints
+{
+    public static RouteGroupBuilder MapAdminArchiveEndpoints(this RouteGroupBuilder group)
+    {
+        group.MapGet("/archived-winners", GetArchivedWinners)
+            .AddEndpointFilter((context, next) => AdminEndpointConventions.RequirePermission(context, next, AdminPermissionCatalog.Winners))
+            .WithName("GetAdminArchivedWinners");
+
+        group.MapPost("/archived-winners", CreateArchivedWinner)
+            .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, AdminPermissionCatalog.Winners))
+            .WithName("CreateAdminArchivedWinner");
+
+        group.MapPut("/archived-winners/{archivedWinnerId:int}", UpdateArchivedWinner)
+            .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, AdminPermissionCatalog.Winners))
+            .WithName("UpdateAdminArchivedWinner");
+
+        group.MapDelete("/archived-winners/{archivedWinnerId:int}", DeleteArchivedWinner)
+            .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, AdminPermissionCatalog.Winners))
+            .WithName("DeleteAdminArchivedWinner");
+
+        return group;
+    }
+
+    private static async Task<IResult> GetArchivedWinners(AwardsDbContext db, CancellationToken cancellationToken)
+    {
+        var items = await db.ArchivedWinners
+            .AsNoTracking()
+            .OrderByDescending(item => item.Year)
+            .ThenBy(item => item.Category)
+            .ThenBy(item => item.Subcategory)
+            .ThenBy(item => item.WinnerName)
+            .Select(item => ToDto(item))
+            .ToArrayAsync(cancellationToken);
+
+        return Results.Ok(items);
+    }
+
+    private static async Task<IResult> CreateArchivedWinner(
+        HttpContext context,
+        UpsertArchivedWinnerRequest request,
+        AwardsDbContext db,
+        IAdminAuditService adminAuditService)
+    {
+        var session = AdminEndpointConventions.CurrentSession(context);
+        var validation = ValidateRequest(request);
+        if (validation is not null)
+        {
+            return validation;
+        }
+
+        var normalized = NormalizeRequest(request);
+        var duplicateExists = await db.ArchivedWinners.AnyAsync(item =>
+            item.Year == normalized.Year
+            && item.Category == normalized.Category
+            && item.Subcategory == normalized.Subcategory,
+            context.RequestAborted);
+        if (duplicateExists)
+        {
+            return Results.BadRequest(new { message = "Für dieses Jahr, diese Kategorie und Unterkategorie existiert bereits ein Archivgewinner." });
+        }
+
+        var archivedWinner = new ArchivedWinner
+        {
+            Year = normalized.Year,
+            Category = normalized.Category,
+            Subcategory = normalized.Subcategory,
+            WinnerName = normalized.WinnerName,
+            WinnerUrl = normalized.WinnerUrl,
+        };
+
+        db.ArchivedWinners.Add(archivedWinner);
+
+        adminAuditService.AddEntry(
+            session.TwitchUserId,
+            "archived-winner.create",
+            "archivedWinner",
+            $"{normalized.Year}:{normalized.Category}:{normalized.Subcategory}",
+            $"Archivgewinner {normalized.Year} · {normalized.Category} · {normalized.Subcategory} angelegt.",
+            new
+            {
+                normalized.Year,
+                normalized.Category,
+                normalized.Subcategory,
+                normalized.WinnerName,
+                normalized.WinnerUrl,
+            },
+            RequestMetadataReader.Read(context));
+
+        await db.SaveChangesAsync(context.RequestAborted);
+        return Results.Ok(new { saved = true, entry = ToDto(archivedWinner) });
+    }
+
+    private static async Task<IResult> UpdateArchivedWinner(
+        HttpContext context,
+        int archivedWinnerId,
+        UpsertArchivedWinnerRequest request,
+        AwardsDbContext db,
+        IAdminAuditService adminAuditService)
+    {
+        var session = AdminEndpointConventions.CurrentSession(context);
+        var validation = ValidateRequest(request);
+        if (validation is not null)
+        {
+            return validation;
+        }
+
+        var archivedWinner = await db.ArchivedWinners.FirstOrDefaultAsync(item => item.Id == archivedWinnerId, context.RequestAborted);
+        if (archivedWinner is null)
+        {
+            return Results.NotFound();
+        }
+
+        var normalized = NormalizeRequest(request);
+        var duplicateExists = await db.ArchivedWinners.AnyAsync(item =>
+            item.Id != archivedWinnerId
+            && item.Year == normalized.Year
+            && item.Category == normalized.Category
+            && item.Subcategory == normalized.Subcategory,
+            context.RequestAborted);
+        if (duplicateExists)
+        {
+            return Results.BadRequest(new { message = "Für dieses Jahr, diese Kategorie und Unterkategorie existiert bereits ein Archivgewinner." });
+        }
+
+        archivedWinner.Year = normalized.Year;
+        archivedWinner.Category = normalized.Category;
+        archivedWinner.Subcategory = normalized.Subcategory;
+        archivedWinner.WinnerName = normalized.WinnerName;
+        archivedWinner.WinnerUrl = normalized.WinnerUrl;
+        archivedWinner.UpdatedAt = DateTimeOffset.UtcNow;
+
+        adminAuditService.AddEntry(
+            session.TwitchUserId,
+            "archived-winner.update",
+            "archivedWinner",
+            archivedWinner.Id.ToString(),
+            $"Archivgewinner {normalized.Year} · {normalized.Category} · {normalized.Subcategory} aktualisiert.",
+            new
+            {
+                archivedWinner.Id,
+                normalized.Year,
+                normalized.Category,
+                normalized.Subcategory,
+                normalized.WinnerName,
+                normalized.WinnerUrl,
+            },
+            RequestMetadataReader.Read(context));
+
+        await db.SaveChangesAsync(context.RequestAborted);
+        return Results.Ok(new { saved = true, entry = ToDto(archivedWinner) });
+    }
+
+    private static async Task<IResult> DeleteArchivedWinner(
+        HttpContext context,
+        int archivedWinnerId,
+        AwardsDbContext db,
+        IAdminAuditService adminAuditService)
+    {
+        var session = AdminEndpointConventions.CurrentSession(context);
+        var archivedWinner = await db.ArchivedWinners.FirstOrDefaultAsync(item => item.Id == archivedWinnerId, context.RequestAborted);
+        if (archivedWinner is null)
+        {
+            return Results.NotFound();
+        }
+
+        db.ArchivedWinners.Remove(archivedWinner);
+
+        adminAuditService.AddEntry(
+            session.TwitchUserId,
+            "archived-winner.delete",
+            "archivedWinner",
+            archivedWinner.Id.ToString(),
+            $"Archivgewinner {archivedWinner.Year} · {archivedWinner.Category} · {archivedWinner.Subcategory} gelöscht.",
+            new
+            {
+                archivedWinner.Id,
+                archivedWinner.Year,
+                archivedWinner.Category,
+                archivedWinner.Subcategory,
+                archivedWinner.WinnerName,
+                archivedWinner.WinnerUrl,
+            },
+            RequestMetadataReader.Read(context));
+
+        await db.SaveChangesAsync(context.RequestAborted);
+        return Results.Ok(new { deleted = true, archivedWinnerId });
+    }
+
+    private static AdminArchivedWinnerItemDto ToDto(ArchivedWinner item) =>
+        new(
+            item.Id,
+            item.Year,
+            item.Category,
+            item.Subcategory,
+            item.WinnerName,
+            item.WinnerUrl,
+            item.CreatedAt,
+            item.UpdatedAt);
+
+    private static IResult? ValidateRequest(UpsertArchivedWinnerRequest request)
+    {
+        if (request.Year < 2000 || request.Year > 3000)
+        {
+            return Results.BadRequest(new { message = "Bitte ein gültiges Archivjahr angeben." });
+        }
+
+        if (string.IsNullOrWhiteSpace(request.Category))
+        {
+            return Results.BadRequest(new { message = "Die Kategorie darf nicht leer sein." });
+        }
+
+        if (string.IsNullOrWhiteSpace(request.Subcategory))
+        {
+            return Results.BadRequest(new { message = "Die Unterkategorie darf nicht leer sein." });
+        }
+
+        if (string.IsNullOrWhiteSpace(request.WinnerName))
+        {
+            return Results.BadRequest(new { message = "Der Gewinnername darf nicht leer sein." });
+        }
+
+        var winnerUrl = request.WinnerUrl?.Trim() ?? string.Empty;
+        if (!Uri.TryCreate(winnerUrl, UriKind.Absolute, out var uri)
+            || (uri.Scheme != Uri.UriSchemeHttp && uri.Scheme != Uri.UriSchemeHttps))
+        {
+            return Results.BadRequest(new { message = "Bitte einen gültigen http- oder https-Link angeben." });
+        }
+
+        return null;
+    }
+
+    private static (int Year, string Category, string Subcategory, string WinnerName, string WinnerUrl) NormalizeRequest(UpsertArchivedWinnerRequest request) =>
+        (
+            request.Year,
+            SeasonMappings.NormalizePlainTextContent(request.Category),
+            SeasonMappings.NormalizePlainTextContent(request.Subcategory),
+            SeasonMappings.NormalizePlainTextContent(request.WinnerName),
+            request.WinnerUrl.Trim());
+}

Backend/Endpoints/AdminEndpoints.cs

@@ -13,6 +13,7 @@ public static class AdminEndpoints
 
         group.MapAdminDashboardEndpoints();
         group.MapAdminSeasonManagementEndpoints();
+        group.MapAdminArchiveEndpoints();
         group.MapAdminModerationEndpoints();
         group.MapAdminExtrasEndpoints();
         group.MapAdminTeamEndpoints();

Backend/Endpoints/AdminNominationModerationEndpoints.cs

@@ -28,13 +28,6 @@ public static partial class AdminModerationEndpoints
             return Results.NotFound();
         }
 
-        var trackingFlags = TrackingRulesSettings.ReadFlagHits(nomination.TrackingFlagsJson);
-        if (trackingFlags.Any(flag => flag.BlocksApproval)
-            && !string.Equals(nomination.TrackingReviewStatus, "overridden", StringComparison.OrdinalIgnoreCase))
-        {
-            return Results.BadRequest(new { message = "Tracking Rules blockieren die Freigabe. Bitte setze zuerst einen manuellen Override im Review." });
-        }
-
         var rawDisplayName = FirstNonEmpty(request.DisplayName, nomination.CandidateText, nomination.ResolvedChannel);
 
         if (string.IsNullOrWhiteSpace(rawDisplayName))

Backend/Endpoints/AdminSeasonCandidateEndpoints.cs

@@ -193,6 +193,34 @@ public static partial class AdminSeasonManagementEndpoints
         return Results.Ok(new { saved = true, candidateId = candidate.Id });
     }
 
+    private static async Task<IResult> GetCandidateDeletePreview(
+        int candidateId,
+        AwardsDbContext db,
+        CancellationToken cancellationToken)
+    {
+        var candidate = await db.Candidates
+            .AsNoTracking()
+            .FirstOrDefaultAsync(item => item.Id == candidateId, cancellationToken);
+        if (candidate is null)
+        {
+            return Results.NotFound();
+        }
+
+        var nominationCount = await db.Nominations.CountAsync(item => item.CandidateId == candidateId, cancellationToken);
+        var clipCount = await db.ClipSubmissions.CountAsync(item => item.CandidateId == candidateId, cancellationToken);
+        var voteCount = await db.VoteEntries.CountAsync(item => item.CandidateId == candidateId, cancellationToken);
+        var resultCount = await db.Results.CountAsync(item => item.CandidateId == candidateId, cancellationToken);
+
+        return Results.Ok(new
+        {
+            candidateId,
+            nominationCount,
+            clipCount,
+            voteCount,
+            resultCount,
+        });
+    }
+
     private static async Task<IResult> DeleteCandidate(
         HttpContext context,
         int candidateId,
@@ -206,6 +234,38 @@ public static partial class AdminSeasonManagementEndpoints
             return Results.NotFound();
         }
 
+        var linkedNominations = await db.Nominations
+            .Where(item => item.CandidateId == candidateId)
+            .ToListAsync(context.RequestAborted);
+        if (linkedNominations.Count > 0)
+        {
+            db.Nominations.RemoveRange(linkedNominations);
+        }
+
+        var linkedClips = await db.ClipSubmissions
+            .Where(item => item.CandidateId == candidateId)
+            .ToListAsync(context.RequestAborted);
+        if (linkedClips.Count > 0)
+        {
+            db.ClipSubmissions.RemoveRange(linkedClips);
+        }
+
+        var linkedVoteEntries = await db.VoteEntries
+            .Where(item => item.CandidateId == candidateId)
+            .ToListAsync(context.RequestAborted);
+        if (linkedVoteEntries.Count > 0)
+        {
+            db.VoteEntries.RemoveRange(linkedVoteEntries);
+        }
+
+        var linkedResults = await db.Results
+            .Where(item => item.CandidateId == candidateId)
+            .ToListAsync(context.RequestAborted);
+        if (linkedResults.Count > 0)
+        {
+            db.Results.RemoveRange(linkedResults);
+        }
+
         db.Candidates.Remove(candidate);
         adminAuditService.AddEntry(
             session.TwitchUserId,
@@ -213,11 +273,29 @@ public static partial class AdminSeasonManagementEndpoints
             "candidate",
             candidate.Id.ToString(),
             $"Kandidat {candidate.DisplayName} wurde gelöscht.",
-            new { candidate.CategoryId, candidate.Platform },
+            new
+            {
+                candidate.CategoryId,
+                candidate.Platform,
+                deletedNominations = linkedNominations.Count,
+                deletedClips = linkedClips.Count,
+                deletedVoteEntries = linkedVoteEntries.Count,
+                deletedResults = linkedResults.Count,
+            },
             RequestMetadataReader.Read(context));
 
-        await db.SaveChangesAsync(context.RequestAborted);
-        return Results.Ok(new { deleted = true, candidateId });
+        try
+        {
+            await db.SaveChangesAsync(context.RequestAborted);
+            return Results.Ok(new { deleted = true, candidateId });
+        }
+        catch (DbUpdateException)
+        {
+            return Results.BadRequest(new
+            {
+                message = "Kandidat konnte nicht gelöscht werden, weil noch verknüpfte Daten blockieren.",
+            });
+        }
     }
 
     private static string NormalizeCandidateChoice(string? value, string fallback, IReadOnlyCollection<string> allowedValues)

Backend/Endpoints/AdminSeasonDetailEndpoints.cs

@@ -23,11 +23,11 @@ public static partial class AdminSeasonManagementEndpoints
             .FirstOrDefaultAsync(item => item.Id == 1);
         var trackingRules = TrackingRulesSettings.Read(settings);
 
-        var candidates = await db.Candidates
+        var candidateRows = await db.Candidates
             .AsNoTracking()
             .Where(item => item.SeasonId == seasonId)
             .OrderBy(item => item.DisplayName)
-            .Select(item => new AdminCandidateItemDto(
+            .Select(item => new AdminCandidateRow(
                 item.Id,
                 item.CategoryId,
                 item.StreamerIdentityId,
@@ -43,7 +43,7 @@ public static partial class AdminSeasonManagementEndpoints
                 item.ClipEmbedStatus))
             .ToArrayAsync();
 
-        var candidateCounts = candidates
+        var candidateCounts = candidateRows
             .GroupBy(item => item.CategoryId)
             .ToDictionary(grouping => grouping.Key, grouping => grouping.Count());
 
@@ -217,6 +217,11 @@ public static partial class AdminSeasonManagementEndpoints
                 item.CategoryId,
                 item.CandidateId))
             .ToArrayAsync();
+        var candidates = BuildCandidateItems(
+            candidateRows,
+            pendingNominationRows,
+            reviewedNominationRows,
+            votingEntryRows);
         var votingWorkspace = BuildVotingWorkspace(
             categories,
             candidates,
@@ -281,6 +286,21 @@ public static partial class AdminSeasonManagementEndpoints
         int CategoryId,
         int CandidateId);
 
+    private sealed record AdminCandidateRow(
+        int Id,
+        int CategoryId,
+        int? StreamerIdentityId,
+        string DisplayName,
+        string ChannelSlug,
+        string Platform,
+        int NominationTally,
+        string AcceptanceStatus,
+        string? AcceptanceNote,
+        string? ClipCompilationUrl,
+        string? ClipCompilationTitle,
+        string? ClipCompilationPlatform,
+        string ClipEmbedStatus);
+
     private sealed record AdminNominationRow(
         int Id,
         int? CategoryId,
@@ -314,6 +334,79 @@ public static partial class AdminSeasonManagementEndpoints
         string? ReviewedByTwitchId,
         DateTimeOffset? ReviewedAt);
 
+    private static AdminCandidateItemDto[] BuildCandidateItems(
+        AdminCandidateRow[] candidateRows,
+        AdminNominationRow[] pendingNominationRows,
+        AdminNominationRow[] reviewedNominationRows,
+        AdminVotingEntryRow[] votingEntryRows)
+    {
+        var allNominationRows = pendingNominationRows
+            .Concat(reviewedNominationRows)
+            .ToArray();
+        var voteCountByCandidate = votingEntryRows
+            .GroupBy(item => item.CandidateId)
+            .ToDictionary(group => group.Key, group => group.Count());
+
+        return candidateRows
+            .Select(item => new AdminCandidateItemDto(
+                item.Id,
+                item.CategoryId,
+                item.StreamerIdentityId,
+                item.DisplayName,
+                item.ChannelSlug,
+                item.Platform,
+                ResolveCandidateAvgViewers(item, allNominationRows),
+                voteCountByCandidate.GetValueOrDefault(item.Id, 0),
+                item.NominationTally,
+                item.AcceptanceStatus,
+                item.AcceptanceNote,
+                item.ClipCompilationUrl,
+                item.ClipCompilationTitle,
+                item.ClipCompilationPlatform,
+                item.ClipEmbedStatus))
+            .ToArray();
+    }
+
+    private static int? ResolveCandidateAvgViewers(AdminCandidateRow candidate, AdminNominationRow[] nominationRows)
+    {
+        var directMatch = nominationRows
+            .Where(item => item.CandidateId == candidate.Id && item.AvgViewers.HasValue)
+            .OrderByDescending(item => item.TrackerCheckedAt ?? item.ReviewedAt ?? item.CreatedAt)
+            .Select(item => item.AvgViewers)
+            .FirstOrDefault();
+        if (directMatch.HasValue)
+        {
+            return directMatch.Value;
+        }
+
+        if (candidate.StreamerIdentityId.HasValue)
+        {
+            var identityMatch = nominationRows
+                .Where(item => item.StreamerIdentityId == candidate.StreamerIdentityId && item.AvgViewers.HasValue)
+                .OrderByDescending(item => item.TrackerCheckedAt ?? item.ReviewedAt ?? item.CreatedAt)
+                .Select(item => item.AvgViewers)
+                .FirstOrDefault();
+            if (identityMatch.HasValue)
+            {
+                return identityMatch.Value;
+            }
+        }
+
+        var normalizedChannel = candidate.ChannelSlug.Trim().TrimStart('@').ToLowerInvariant();
+        if (string.IsNullOrWhiteSpace(normalizedChannel))
+        {
+            return null;
+        }
+
+        return nominationRows
+            .Where(item =>
+                item.AvgViewers.HasValue
+                && string.Equals(item.ResolvedChannel?.Trim().TrimStart('@'), normalizedChannel, StringComparison.OrdinalIgnoreCase))
+            .OrderByDescending(item => item.TrackerCheckedAt ?? item.ReviewedAt ?? item.CreatedAt)
+            .Select(item => item.AvgViewers)
+            .FirstOrDefault();
+    }
+
     private static AdminNominationReviewItemDto ToNominationReviewItem(
         AdminNominationRow item,
         IEnumerable<dynamic> categoryRows,

Backend/Endpoints/AdminSeasonManagementEndpoints.cs

@@ -60,6 +60,10 @@ public static partial class AdminSeasonManagementEndpoints
             .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, Backend.Security.AdminPermissionCatalog.Candidates))
             .WithName("UpdateAdminCandidate")
             .WithOpenApi();
+        group.MapGet("/candidates/{candidateId:int}/delete-preview", GetCandidateDeletePreview)
+            .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, Backend.Security.AdminPermissionCatalog.Candidates))
+            .WithName("GetAdminCandidateDeletePreview")
+            .WithOpenApi();
         group.MapDelete("/candidates/{candidateId:int}", DeleteCandidate)
             .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, Backend.Security.AdminPermissionCatalog.Candidates))
             .WithName("DeleteAdminCandidate")

Backend/Endpoints/AdminSiteSettingsEndpoints.cs

@@ -14,6 +14,15 @@ public static class AdminSiteSettingsEndpoints
     private const string FallbackMaintenanceTitle = "Sternenpause";
     private const string FallbackMaintenanceMessage = "Die Award-Galaxie wird gerade liebevoll poliert. Schau gleich wieder vorbei.";
     private const string FallbackClipSubmissionDisabledMessage = "Clip-Einreichungen sind aktuell geschlossen.";
+    private const string DefaultHostImageUrl = "/assets/amaterasu2sei_2.png";
+    private const int MaxHostImageBytes = 8 * 1024 * 1024;
+
+    private static readonly IReadOnlyDictionary<string, string> AllowedHostImageContentTypes = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+    {
+        ["image/png"] = ".png",
+        ["image/jpeg"] = ".jpg",
+        ["image/webp"] = ".webp",
+    };
 
     public static RouteGroupBuilder MapAdminSiteSettingsEndpoints(this RouteGroupBuilder group)
     {
@@ -25,6 +34,10 @@ public static class AdminSiteSettingsEndpoints
             .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, AdminPermissionCatalog.Content))
             .WithName("UpdateAdminSiteSettings")
             .WithOpenApi();
+        group.MapPost("/site-settings/host-image", UploadHostImage)
+            .AddEndpointFilter((context, next) => AdminEndpointConventions.RequireWritePermission(context, next, AdminPermissionCatalog.Content))
+            .WithName("UploadAdminHostImage")
+            .WithOpenApi();
         group.MapGet("/operational-settings", GetOperationalSettings)
             .AddEndpointFilter((context, next) => AdminEndpointConventions.RequirePermission(context, next, AdminPermissionCatalog.Settings))
             .WithName("GetAdminOperationalSettings")
@@ -68,43 +81,76 @@ public static class AdminSiteSettingsEndpoints
             return Results.NotFound();
         }
 
-        return Results.Ok(new AdminSiteSettingsResponse(
-            settings.HostDisplayName,
-            settings.HostTagline,
-            settings.NewsletterUrl,
-            settings.ShareXUrl,
-            settings.ShareDiscordUrl,
-            settings.PrivacyEmail,
-            settings.PrivacyPolicyContent,
-            settings.PrivacyPolicyUpdatedBy,
-            settings.PrivacyPolicyUpdatedAt,
-            settings.ImprintUrl,
-            settings.ImprintContent,
-            settings.ContactUrl,
-            settings.ContactContent,
-            settings.SponsorsUrl,
-            settings.SponsorsContent,
-            settings.ShowactsUrl,
-            settings.ShowactsContent,
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerEyebrow),
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerTitle),
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerText),
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerLiveButtonLabel),
-            settings.StreamBannerLiveButtonUrl,
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerLockedButtonLabel),
-            settings.StreamBannerUseCompletedContent,
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedEyebrow),
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedTitle),
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedText),
-            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedButtonLabel),
-            settings.StreamBannerCompletedButtonUrl,
-            SeasonMappings.NormalizePlainTextContent(settings.AwardsSectionTitle),
-            SeasonMappings.NormalizePlainTextContent(settings.AwardsSectionDescription),
-            SeasonMappings.NormalizePlainTextContent(settings.SubcategoriesSectionTitle),
-            SeasonMappings.NormalizePlainTextContent(settings.SubcategoriesSectionDescription),
-            SeasonMappings.ReadSocialLinks(settings),
-            SeasonMappings.ReadFaqItems(settings),
-            settings.ShowactFormSchemaJson ?? "[]"));
+        return Results.Ok(MapSiteSettingsResponse(settings));
+    }
+
+    private static async Task<IResult> UploadHostImage(
+        HttpContext context,
+        AwardsDbContext db,
+        IAdminAuditService adminAuditService)
+    {
+        if (!context.Request.HasFormContentType)
+        {
+            return Results.BadRequest(new { message = "Bitte ein Bild als Formular-Upload senden." });
+        }
+
+        var form = await context.Request.ReadFormAsync(context.RequestAborted);
+        var file = form.Files.GetFile("file") ?? form.Files.FirstOrDefault();
+        if (file is null || file.Length == 0)
+        {
+            return Results.BadRequest(new { message = "Bitte ein Hostbild auswählen." });
+        }
+
+        if (file.Length > MaxHostImageBytes)
+        {
+            return Results.BadRequest(new { message = "Hostbild ist zu groß. Maximal erlaubt sind 8 MB." });
+        }
+
+        if (!AllowedHostImageContentTypes.TryGetValue(file.ContentType, out var expectedExtension))
+        {
+            return Results.BadRequest(new { message = "Bitte PNG, JPG oder WebP hochladen." });
+        }
+
+        var extension = Path.GetExtension(file.FileName);
+        if (!string.IsNullOrWhiteSpace(extension)
+            && !string.Equals(extension, expectedExtension, StringComparison.OrdinalIgnoreCase)
+            && !(string.Equals(file.ContentType, "image/jpeg", StringComparison.OrdinalIgnoreCase)
+                && string.Equals(extension, ".jpeg", StringComparison.OrdinalIgnoreCase)))
+        {
+            return Results.BadRequest(new { message = "Dateiendung und Bildtyp passen nicht zusammen." });
+        }
+
+        var settings = await db.SiteSettings.FirstOrDefaultAsync(item => item.Id == 1);
+        if (settings is null)
+        {
+            return Results.NotFound();
+        }
+
+        await using var stream = file.OpenReadStream();
+        using var memory = new MemoryStream((int)file.Length);
+        await stream.CopyToAsync(memory, context.RequestAborted);
+
+        settings.HostImageData = memory.ToArray();
+        settings.HostImageContentType = file.ContentType;
+        settings.HostImageUpdatedAt = DateTimeOffset.UtcNow;
+
+        var session = AdminEndpointConventions.CurrentSession(context);
+        adminAuditService.AddEntry(
+            session.TwitchUserId,
+            "site-settings.host-image.upload",
+            "site-settings",
+            settings.Id.ToString(),
+            "Landingpage-Hostbild wurde aktualisiert.",
+            new
+            {
+                fileName = file.FileName,
+                fileSize = file.Length,
+                file.ContentType,
+            },
+            RequestMetadataReader.Read(context));
+
+        await db.SaveChangesAsync(context.RequestAborted);
+        return Results.Ok(MapSiteSettingsResponse(settings));
     }
 
     private static async Task<IResult> UpdateSiteSettings(
@@ -129,6 +175,7 @@ public static class AdminSiteSettingsEndpoints
 
         settings.HostDisplayName = request.HostDisplayName.Trim();
         settings.HostTagline = request.HostTagline.Trim();
+        settings.HostArtistName = request.HostArtistName.Trim();
         settings.NewsletterUrl = normalizedUrls.NewsletterUrl;
         settings.ShareXUrl = normalizedUrls.ShareXUrl;
         settings.ShareDiscordUrl = normalizedUrls.ShareDiscordUrl;
@@ -189,6 +236,61 @@ public static class AdminSiteSettingsEndpoints
         return Results.Ok(new { saved = true });
     }
 
+    private static AdminSiteSettingsResponse MapSiteSettingsResponse(SiteSettings settings)
+    {
+        return new AdminSiteSettingsResponse(
+            settings.HostDisplayName,
+            settings.HostTagline,
+            settings.HostArtistName,
+            BuildHostImageUrl(settings),
+            settings.NewsletterUrl,
+            settings.ShareXUrl,
+            settings.ShareDiscordUrl,
+            settings.PrivacyEmail,
+            settings.PrivacyPolicyContent,
+            settings.PrivacyPolicyUpdatedBy,
+            settings.PrivacyPolicyUpdatedAt,
+            settings.ImprintUrl,
+            settings.ImprintContent,
+            settings.ContactUrl,
+            settings.ContactContent,
+            settings.SponsorsUrl,
+            settings.SponsorsContent,
+            settings.ShowactsUrl,
+            settings.ShowactsContent,
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerEyebrow),
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerTitle),
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerText),
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerLiveButtonLabel),
+            settings.StreamBannerLiveButtonUrl,
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerLockedButtonLabel),
+            settings.StreamBannerUseCompletedContent,
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedEyebrow),
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedTitle),
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedText),
+            SeasonMappings.NormalizePlainTextContent(settings.StreamBannerCompletedButtonLabel),
+            settings.StreamBannerCompletedButtonUrl,
+            SeasonMappings.NormalizePlainTextContent(settings.AwardsSectionTitle),
+            SeasonMappings.NormalizePlainTextContent(settings.AwardsSectionDescription),
+            SeasonMappings.NormalizePlainTextContent(settings.SubcategoriesSectionTitle),
+            SeasonMappings.NormalizePlainTextContent(settings.SubcategoriesSectionDescription),
+            SeasonMappings.ReadSocialLinks(settings),
+            SeasonMappings.ReadFaqItems(settings),
+            settings.ShowactFormSchemaJson ?? "[]");
+    }
+
+    internal static string BuildHostImageUrl(SiteSettings settings)
+    {
+        if (settings.HostImageData is not { Length: > 0 })
+        {
+            return DefaultHostImageUrl;
+        }
+
+        var version = settings.HostImageUpdatedAt?.ToUnixTimeSeconds().ToString(System.Globalization.CultureInfo.InvariantCulture)
+            ?? settings.HostImageData.Length.ToString(System.Globalization.CultureInfo.InvariantCulture);
+        return $"/api/public/host-image?v={version}";
+    }
+
     private static IResult? NormalizeSiteSettingsUrls(
         UpdateSiteSettingsRequest request,
         out PublicSiteUrlSettings normalizedUrls,

Backend/Endpoints/PublicEndpoints.cs

@@ -14,6 +14,10 @@ public static partial class PublicEndpoints
             .WithName("GetSiteStatus")
             .WithOpenApi();
 
+        group.MapGet("/host-image", GetHostImage)
+            .WithName("GetPublicHostImage")
+            .WithOpenApi();
+
         group.MapGet("/seasons/{year:int}/categories", GetSeasonCategories)
             .WithName("GetSeasonCategories")
             .WithOpenApi();

Backend/Endpoints/PublicHostImageEndpoints.cs

@@ -0,0 +1,35 @@
+using Backend.Data;
+using Microsoft.EntityFrameworkCore;
+
+namespace Backend.Endpoints;
+
+public static partial class PublicEndpoints
+{
+    private static async Task<IResult> GetHostImage(AwardsDbContext db)
+    {
+        var settings = await db.SiteSettings
+            .AsNoTracking()
+            .Where(item => item.Id == 1)
+            .Select(item => new
+            {
+                item.HostImageData,
+                item.HostImageContentType,
+                item.HostImageUpdatedAt,
+            })
+            .FirstOrDefaultAsync();
+
+        if (settings?.HostImageData is not { Length: > 0 } imageData
+            || string.IsNullOrWhiteSpace(settings.HostImageContentType))
+        {
+            return Results.NotFound();
+        }
+
+        var entityTag = settings.HostImageUpdatedAt?.ToUnixTimeSeconds().ToString(System.Globalization.CultureInfo.InvariantCulture)
+            ?? imageData.Length.ToString(System.Globalization.CultureInfo.InvariantCulture);
+        return Results.File(
+            imageData,
+            settings.HostImageContentType,
+            entityTag: new Microsoft.Net.Http.Headers.EntityTagHeaderValue($"\"host-{entityTag}\""),
+            lastModified: settings.HostImageUpdatedAt);
+    }
+}

Backend/Endpoints/PublicOverviewEndpoints.cs

@@ -89,8 +89,23 @@ public static partial class PublicEndpoints
             .OrderByDescending(item => item.Year)
             .ToArrayAsync();
 
+        var archivedWinnerYearRows = await db.ArchivedWinners
+            .AsNoTracking()
+            .Where(item => latestPublishedWinnerYear == null || item.Year < latestPublishedWinnerYear.Value)
+            .GroupBy(item => item.Year)
+            .Select(group => new
+            {
+                Year = group.Key,
+                WinnerCount = group.Count(),
+            })
+            .ToArrayAsync();
+
         var archiveYears = archiveYearRows
             .Select(item => new ArchiveYearDto(item.Year, item.WinnerCount))
+            .Concat(archivedWinnerYearRows.Select(item => new ArchiveYearDto(item.Year, item.WinnerCount)))
+            .GroupBy(item => item.Year)
+            .Select(group => group.Last())
+            .OrderByDescending(item => item.Year)
             .ToArray();
 
         var phaseKey = SeasonMappings.NormalizePhaseKey(season.CurrentPhase);
@@ -150,6 +165,8 @@ public static partial class PublicEndpoints
             new PublicSiteContentDto(
                 siteSettings.HostDisplayName,
                 siteSettings.HostTagline,
+                siteSettings.HostArtistName,
+                AdminSiteSettingsEndpoints.BuildHostImageUrl(siteSettings),
                 siteSettings.NewsletterUrl,
                 siteSettings.ShareXUrl,
                 siteSettings.ShareDiscordUrl,

Backend/Endpoints/PublicWinnerArchiveEndpoints.cs

@@ -9,6 +9,42 @@ public static partial class PublicEndpoints
 {
     private static async Task<IResult> GetWinnerArchive(int year, AwardsDbContext db)
     {
+        var latestPublishedWinnerYear = await db.Results
+            .AsNoTracking()
+            .Where(result => result.Season.WinnersPublishedAt != null)
+            .Select(result => (int?)result.Season.Year)
+            .MaxAsync();
+
+        var archivedWinnerRows = await db.ArchivedWinners
+            .AsNoTracking()
+            .Where(item => item.Year == year)
+            .OrderBy(item => item.Category)
+            .ThenBy(item => item.Subcategory)
+            .ThenBy(item => item.WinnerName)
+            .ToArrayAsync();
+        if (archivedWinnerRows.Length > 0)
+        {
+            var archivedItems = archivedWinnerRows
+                .Select(item =>
+                {
+                    var metadata = SeasonMappings.InferProfileMetadataFromUrl(item.WinnerUrl, item.WinnerName);
+                    return new WinnerArchiveItemDto(
+                        item.Subcategory,
+                        item.Category,
+                        item.WinnerName,
+                        metadata.Slug,
+                        metadata.Platform,
+                        item.WinnerUrl,
+                        null,
+                        null,
+                        null,
+                        null);
+                })
+                .ToArray();
+
+            return Results.Ok(new WinnerArchiveResponse(year, archivedItems));
+        }
+
         var season = await db.Seasons
             .AsNoTracking()
             .Where(item => item.Year == year)
@@ -16,7 +52,7 @@ public static partial class PublicEndpoints
             .FirstOrDefaultAsync();
         if (season is null)
         {
-            return Results.NotFound();
+            return Results.Ok(new WinnerArchiveResponse(year, []));
         }
 
         if (season.WinnersPublishedAt is null)
@@ -24,11 +60,6 @@ public static partial class PublicEndpoints
             return Results.Ok(new WinnerArchiveResponse(year, []));
         }
 
-        var latestPublishedWinnerYear = await db.Results
-            .AsNoTracking()
-            .Where(result => result.Season.WinnersPublishedAt != null)
-            .Select(result => (int?)result.Season.Year)
-            .MaxAsync();
         if (latestPublishedWinnerYear == season.Year)
         {
             return Results.Ok(new WinnerArchiveResponse(year, []));