Add viewer-range categories, nomination tracking, dynamic showact form, session timeout, share URLs, and workflow-per-season

Features:
- Category viewer ranges + subcategory templates (admin group modal, tree workspace)
- Nomination enrichment via TwitchTracker API (NominationEnrichmentService,
  TwitchTrackerViewerStatsProvider) with admin tracking rules editor
- Nomination group tracker: CategoryGroupName as primary identifier,
  CategoryId stays as nullable legacy field; StreamerIdentity table
- Dynamic showact application form builder (AdminShowactFormBuilder,
  ShowactApplicationSchedule)
- Session idle timeout setting (AdminSessionTimeoutCard)
- Share URLs for X and Discord (SiteSettings, public extras)
- Workflow rules now stored per season (falls back to global SiteSettings)
- New admin routes: settings/access, settings/workflows, tracking-rules
- New admin review workspace with subcategory tabs
- AdminCategoriesView rebuilt with group/subcategory modals

Migrations (all additive):
- AddShareUrls, AddShowactDynamicForm, AddCategoryViewerRanges,
  AddSessionIdleTimeoutSettings, AddSeasonSubcategoryTemplates,
  AddNominationGroupTrackerIdentity, AddShowactApplicationSchedule,
  AddSeasonWorkflowRulesJson

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Backend/Domain/Candidate.cs

@@ -7,9 +7,12 @@ public sealed class Candidate
     public Season Season { get; set; } = null!;
     public int CategoryId { get; set; }
     public Category Category { get; set; } = null!;
+    public int? StreamerIdentityId { get; set; }
+    public StreamerIdentity? StreamerIdentity { get; set; }
     public string DisplayName { get; set; } = string.Empty;
     public string ChannelSlug { get; set; } = string.Empty;
     public string Platform { get; set; } = "Twitch";
+    public int NominationTally { get; set; }
     public string AcceptanceStatus { get; set; } = "open";
     public string? AcceptanceNote { get; set; }
     public string? ClipCompilationUrl { get; set; }

Backend/Domain/Category.cs

@@ -11,5 +11,7 @@ public sealed class Category
     public string Description { get; set; } = string.Empty;
     public int SortOrder { get; set; }
     public int MaxNomineesPerUser { get; set; }
+    public int? ViewerRangeMin { get; set; }
+    public int? ViewerRangeMax { get; set; }
     public ICollection<Candidate> Candidates { get; set; } = [];
 }

Backend/Domain/Nomination.cs

@@ -5,13 +5,32 @@ public sealed class Nomination
     public int Id { get; set; }
     public int SeasonId { get; set; }
     public Season Season { get; set; } = null!;
-    public int CategoryId { get; set; }
-    public Category Category { get; set; } = null!;
+    public int? CategoryId { get; set; }
+    public Category? Category { get; set; }
+    public string CategoryGroupName { get; set; } = string.Empty;
     public string SubmittedByTwitchId { get; set; } = string.Empty;
     public int? CandidateId { get; set; }
     public Candidate? Candidate { get; set; }
+    public int? StreamerIdentityId { get; set; }
+    public StreamerIdentity? StreamerIdentity { get; set; }
+    public int? SuggestedCategoryId { get; set; }
+    public Category? SuggestedCategory { get; set; }
     public string? CandidateText { get; set; }
     public string? StreamUrl { get; set; }
+    public string? ResolvedChannel { get; set; }
+    public string? ResolvedPlatform { get; set; }
+    public int? AvgViewers { get; set; }
+    public int? HoursStreamed { get; set; }
+    public int? HoursWatched { get; set; }
+    public int? PeakViewers { get; set; }
+    public int? FollowersGained { get; set; }
+    public string TrackerStatus { get; set; } = "pending";
+    public DateTimeOffset? TrackerCheckedAt { get; set; }
+    public string TrackingReviewStatus { get; set; } = "clear";
+    public string TrackingFlagsJson { get; set; } = "[]";
+    public string? TrackingReviewNote { get; set; }
+    public string? TrackingReviewedByTwitchId { get; set; }
+    public DateTimeOffset? TrackingReviewedAt { get; set; }
     public string Status { get; set; } = "pending";
     public string? ReviewNote { get; set; }
     public string? ReviewedByTwitchId { get; set; }

Backend/Domain/Season.cs

@@ -17,6 +17,8 @@ public sealed class Season
     public DateOnly ReviewEndsAt { get; set; }
     public DateOnly ShowDate { get; set; }
     public TimeOnly ShowStartsAt { get; set; } = new(20, 0);
+    public string SubcategoryTemplatesJson { get; set; } = "[]";
+    public string WorkflowRulesJson { get; set; } = "[]";
     public ICollection<Category> Categories { get; set; } = [];
     public ICollection<AwardResult> Results { get; set; } = [];
 }

Backend/Domain/ShowactApplication.cs

@@ -13,6 +13,7 @@ public sealed class ShowactApplication
     public string Description { get; set; } = string.Empty;
     public string TechnicalNotes { get; set; } = string.Empty;
     public string ReferenceUrl { get; set; } = string.Empty;
+    public string FieldResponsesJson { get; set; } = "{}";
     public string Status { get; set; } = "pending";
     public string? ReviewNote { get; set; }
     public string? ReviewedByTwitchId { get; set; }

Backend/Domain/SiteSettings.cs

@@ -6,6 +6,8 @@ public sealed class SiteSettings
     public string HostDisplayName { get; set; } = string.Empty;
     public string HostTagline { get; set; } = string.Empty;
     public string NewsletterUrl { get; set; } = string.Empty;
+    public string ShareXUrl { get; set; } = string.Empty;
+    public string ShareDiscordUrl { get; set; } = string.Empty;
     public string PrivacyEmail { get; set; } = string.Empty;
     public string PrivacyPolicyContent { get; set; } = string.Empty;
     public string? PrivacyPolicyUpdatedBy { get; set; }
@@ -22,13 +24,19 @@ public sealed class SiteSettings
     public string FaqJson { get; set; } = "[]";
     public string RiskRulesJson { get; set; } = "[]";
     public string WorkflowRulesJson { get; set; } = "[]";
+    public string TrackingRulesJson { get; set; } = "[]";
+    public string ViewerStatsProviderBaseUrl { get; set; } = string.Empty;
+    public string TrackingReviewNotes { get; set; } = string.Empty;
     public string NominationLinkBlacklistJson { get; set; } = "[]";
     public bool ClipSubmissionsEnabled { get; set; }
     public bool ClipReviewEnabled { get; set; } = true;
     public bool ClipAdminMenuVisible { get; set; } = true;
     public string ClipSubmissionDisabledMessage { get; set; } = "Clip-Einreichungen sind aktuell geschlossen.";
     public bool ShowactApplicationsEnabled { get; set; }
+    public DateOnly? ShowactApplicationStartsAt { get; set; }
+    public DateOnly? ShowactApplicationEndsAt { get; set; }
     public string ShowactApplicationDisabledMessage { get; set; } = "Showact-Bewerbungen sind aktuell geschlossen.";
+    public string ShowactFormSchemaJson { get; set; } = "[]";
     public bool SponsorsVisible { get; set; } = true;
     public bool DemoLoginManagedByDatabase { get; set; }
     public bool DemoLoginEnabled { get; set; }
@@ -42,6 +50,7 @@ public sealed class SiteSettings
     public string TwitchClientSecret { get; set; } = string.Empty;
     public string TwitchRedirectUri { get; set; } = string.Empty;
     public string TwitchScope { get; set; } = string.Empty;
+    public int SessionIdleTimeoutHours { get; set; } = 3;
     public bool MaintenanceModeEnabled { get; set; }
     public string MaintenanceTitle { get; set; } = "Sternenpause";
     public string MaintenanceMessage { get; set; } = "Die Award-Galaxie wird gerade liebevoll poliert. Schau gleich wieder vorbei.";

Backend/Domain/StreamerIdentity.cs

@@ -0,0 +1,14 @@
+namespace Backend.Domain;
+
+public sealed class StreamerIdentity
+{
+    public int Id { get; set; }
+    public string Platform { get; set; } = string.Empty;
+    public string Login { get; set; } = string.Empty;
+    public string NormalizedKey { get; set; } = string.Empty;
+    public string DisplayName { get; set; } = string.Empty;
+    public string? ProfileUrl { get; set; }
+    public DateTimeOffset? LastResolvedAt { get; set; }
+    public ICollection<Nomination> Nominations { get; set; } = [];
+    public ICollection<Candidate> Candidates { get; set; } = [];
+}