Slip- und Beschuldigungslogik überarbeitet

Slips werden jetzt 30 Sekunden vorgehalten und anschließend automatisch abgeschlossen; direkte Spieler-Beschuldigungen, Win-Status, SignalR-Events, MAUI-UI, EF-Mapping/Migrationen sowie Tests wurden an die neue Spiellogik angepasst.

SlipItIn.Shared/DTOs/GameStateDto.cs

@@ -10,6 +10,8 @@ public class GameStateDto
     public int HostUserId { get; set; }
     public int CurrentRound { get; set; }
     public int RoundTimeRemaining { get; set; }
+    public int? WinnerPlayerId { get; set; }
+    public string? WinnerUsername { get; set; }
 }
 
 public class PlayerInfoDto
@@ -29,12 +31,55 @@ public class PlayerHandDto
     public List<PlayerCardDto> Cards { get; set; } = [];
 }
 
-public class PlayerCardDto
+public class PlayerCardDto : System.ComponentModel.INotifyPropertyChanged
 {
+    private bool _isUsed;
+    private DateTime? _slippedAt;
+    private int _slippedHoldSecondsRemaining;
+
+    public event System.ComponentModel.PropertyChangedEventHandler? PropertyChanged;
+
     public int CardId { get; set; }
     public int PhraseId { get; set; }
     public string Text { get; set; } = string.Empty;
-    public bool IsUsed { get; set; }
+
+    public bool IsUsed
+    {
+        get => _isUsed;
+        set { _isUsed = value; NotifyStateChanged(); }
+    }
+
+    public DateTime? SlippedAt
+    {
+        get => _slippedAt;
+        set { _slippedAt = value; NotifyStateChanged(); }
+    }
+
+    public int SlippedHoldSecondsRemaining
+    {
+        get => _slippedHoldSecondsRemaining;
+        set
+        {
+            _slippedHoldSecondsRemaining = value;
+            Raise(nameof(SlippedHoldSecondsRemaining));
+            Raise(nameof(SlipButtonText));
+        }
+    }
+
+    public bool IsPendingSlip => SlippedAt.HasValue && !IsUsed;
+    public bool CanSlip => !IsPendingSlip && !IsUsed;
+    public string SlipButtonText => IsPendingSlip ? $"Vorgehalten ({SlippedHoldSecondsRemaining}s)" : "Slip";
+
+    private void NotifyStateChanged()
+    {
+        Raise(nameof(IsUsed));
+        Raise(nameof(SlippedAt));
+        Raise(nameof(IsPendingSlip));
+        Raise(nameof(CanSlip));
+        Raise(nameof(SlipButtonText));
+    }
+
+    private void Raise(string name) => PropertyChanged?.Invoke(this, new(name));
 }
 
 public class SlipChallengeDto
@@ -43,7 +88,8 @@ public class SlipChallengeDto
     public int ChallengingPlayerId { get; set; }
     public string ChallengingPlayerName { get; set; } = string.Empty;
     public int TargetPlayerId { get; set; }
-    public int TargetCardId { get; set; }
+    public string TargetPlayerName { get; set; } = string.Empty;
+    public int? TargetCardId { get; set; }
     public string Status { get; set; } = string.Empty;
     public DateTime CreatedAt { get; set; }
 }