Survival mode bugfixes and revive mechanism

Outnumbered/SurvivalRun.cs

@@ -9,6 +9,7 @@ public sealed class SurvivalRun(Func<string, Config.SurvivalCardDef?> cardDef) :
     private readonly Func<string, Config.SurvivalCardDef?> _cardDef = cardDef;
     public double WaveXp { get; set; }                     // raw combat XP banked THIS wave (granted + reset at wave clear; forfeited on a wipe/leave mid-wave)
     public int RunPoints { get; set; }                    // unspent draft picks
+    public int ReviveCharges { get; set; }                // Field Medic teammate-revives left THIS wave (refreshed at wave start from the medic-card level)
     public Dictionary<string, int> Cards { get; } = []; // card key -> times picked (get-only: the ref is fixed, the contents mutate)
     public List<string> DrawnThisBreak { get; set; } = []; // the current offered draw (stable across reopen within a break)