Initial VTuber Awards implementation

Backend/Domain/AwardResult.cs

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+namespace Backend.Domain;
+
+public sealed class AwardResult
+{
+    public int Id { get; set; }
+    public int SeasonId { get; set; }
+    public Season Season { get; set; } = null!;
+    public int CandidateId { get; set; }
+    public Candidate Candidate { get; set; } = null!;
+    public string CategoryName { get; set; } = string.Empty;
+}

Backend/Domain/Candidate.cs

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+namespace Backend.Domain;
+
+public sealed class Candidate
+{
+    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 string DisplayName { get; set; } = string.Empty;
+    public string ChannelSlug { get; set; } = string.Empty;
+    public string Platform { get; set; } = "Twitch";
+}

Backend/Domain/Category.cs

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+namespace Backend.Domain;
+
+public sealed class Category
+{
+    public int Id { get; set; }
+    public int SeasonId { get; set; }
+    public Season Season { get; set; } = null!;
+    public string GroupName { get; set; } = string.Empty;
+    public string Name { get; set; } = string.Empty;
+    public string Slug { get; set; } = string.Empty;
+    public string Description { get; set; } = string.Empty;
+    public int SortOrder { get; set; }
+    public int MaxNomineesPerUser { get; set; }
+    public ICollection<Candidate> Candidates { get; set; } = [];
+}

Backend/Domain/Nomination.cs

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+namespace Backend.Domain;
+
+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 string SubmittedByTwitchId { get; set; } = string.Empty;
+    public int? CandidateId { get; set; }
+    public Candidate? Candidate { get; set; }
+    public string? CandidateText { get; set; }
+    public DateTimeOffset CreatedAt { get; set; }
+}

Backend/Domain/Season.cs

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+namespace Backend.Domain;
+
+public sealed class Season
+{
+    public int Id { get; set; }
+    public int Year { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public bool IsCurrent { get; set; }
+    public bool IsCommunityOnly { get; set; }
+    public string CurrentPhase { get; set; } = string.Empty;
+    public DateOnly NominationStartsAt { get; set; }
+    public DateOnly NominationEndsAt { get; set; }
+    public DateOnly VotingStartsAt { get; set; }
+    public DateOnly VotingEndsAt { get; set; }
+    public DateOnly ReviewStartsAt { get; set; }
+    public DateOnly ReviewEndsAt { get; set; }
+    public DateOnly ShowDate { get; set; }
+    public ICollection<Category> Categories { get; set; } = [];
+    public ICollection<AwardResult> Results { get; set; } = [];
+}

Backend/Domain/UserSession.cs

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+namespace Backend.Domain;
+
+public sealed class UserSession
+{
+    public Guid Id { get; set; }
+    public string SessionToken { get; set; } = string.Empty;
+    public string TwitchUserId { get; set; } = string.Empty;
+    public string DisplayName { get; set; } = string.Empty;
+    public string Role { get; set; } = "viewer";
+    public DateTimeOffset CreatedAt { get; set; }
+    public DateTimeOffset LastSeenAt { get; set; }
+    public bool IsActive { get; set; }
+}

Backend/Domain/VoteBallot.cs

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+namespace Backend.Domain;
+
+public sealed class VoteBallot
+{
+    public int Id { get; set; }
+    public int SeasonId { get; set; }
+    public Season Season { get; set; } = null!;
+    public string SubmittedByTwitchId { get; set; } = string.Empty;
+    public string Status { get; set; } = "draft";
+    public DateTimeOffset SubmittedAt { get; set; }
+    public ICollection<VoteEntry> Entries { get; set; } = [];
+}

Backend/Domain/VoteEntry.cs

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+namespace Backend.Domain;
+
+public sealed class VoteEntry
+{
+    public int Id { get; set; }
+    public int BallotId { get; set; }
+    public VoteBallot Ballot { get; set; } = null!;
+    public int CategoryId { get; set; }
+    public Category Category { get; set; } = null!;
+    public int CandidateId { get; set; }
+    public Candidate Candidate { get; set; } = null!;
+}