fix(tk2): honor consume_item_type (ticket/crystal/rupy/free) + correct entry ticket id

- ArenaTwoPickConfig: add TicketItemId=1, TicketCost=1, CrystalCost=150, RupyCost=150 scalars
- ArenaTwoPickService.EntryAsync: switch on eARENA_PAY (1/3/4/5); crystal/rupy go through
  ICurrencySpendService.TrySpendAsync; ticket uses item id 1 (challenge ticket, not 80001);
  free entry returns empty reward_list; invalid type throws
- Tests: fix ticket id 80001→1 in entry/e2e; add 4 new path tests; update ctor (10th arg)
  across all 4 service test files; fix e2e retire assertion (reward ticket 80001 post-state=1)

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

SVSim.Database/Models/Config/ArenaTwoPickConfig.cs

@@ -21,6 +21,14 @@ public class ArenaTwoPickConfig
 
     public double NeutralMixRate { get; set; } = 0.25;
 
+    /// <summary>TK2 entry ticket — item id 1 (challenge ticket). Distinct from the run-end
+    /// REWARD ticket id (80001, throwback pack ticket).</summary>
+    public int TicketItemId { get; set; } = 1;
+
+    public int TicketCost { get; set; } = 1;
+    public int CrystalCost { get; set; } = 150;
+    public int RupyCost { get; set; } = 150;
+
     public List<int> AllowedClassIds { get; set; } = new();
 
     public static ArenaTwoPickConfig ShippedDefaults() => new()