feat: Update 2018 client support with registration defaults and WebSocket handling

DorkNet.Models/Auth/Login2018.cs

@@ -72,11 +72,12 @@ public class Player2018
     [JsonPropertyName("Level")]
     public int Level { get; set; } = 1;
 
-    // Obfuscated enum in the dump; not a gate (the client just stores it). 3 is
-    // the "fully registered" value used elsewhere; verify against a live client
-    // if the signup flow re-appears for an existing account.
+    // Registration step enum (ProfileSelectionManager.NFCBDCFLBOC):
+    // invalid=-1, video=0, birthday=1, email=2, COMPLETE=10. Anything < 10
+    // makes the client run the signup step flow (it got "stuck on birthday").
+    // 10 = fully registered → client goes straight in-game.
     [JsonPropertyName("RegistrationStatus")]
-    public int RegistrationStatus { get; set; } = 3;
+    public int RegistrationStatus { get; set; } = 10;
 
     [JsonPropertyName("Developer")]
     public bool Developer { get; set; }

DorkNet.Models/Config/RecRoomConfig.cs

@@ -98,11 +98,17 @@ public class PhotonConfig
 
 public class MatchmakingParams
 {
-    [JsonPropertyName("MaxPlayersPerRoom")]
-    public int MaxPlayersPerRoom { get; set; } = 8;
+    // 2018 RecNet.LOIBFONMHMF.Deserialize reads exactly TWO required float keys
+    // via Util.GetKey<Single> (verified via dnlib). It's fetched as an optional
+    // object (GetObjectKey) inside config/v2, but once PRESENT the client
+    // deserializes it — wrong/missing keys throw KeyNotFoundException →
+    // "Received malformed RecNet response" → "Failed to connect to RecNet" at
+    // boot. The 2020 MaxPlayersPerRoom/MinPlayersToStart keys are NOT read here.
+    [JsonPropertyName("PreferFullRoomsFrequency")]
+    public float PreferFullRoomsFrequency { get; set; } = 0.5f;
 
-    [JsonPropertyName("MinPlayersToStart")]
-    public int MinPlayersToStart { get; set; } = 1;
+    [JsonPropertyName("PreferEmptyRoomsFrequency")]
+    public float PreferEmptyRoomsFrequency { get; set; } = 0.5f;
 }
 
 public class LevelProgressionEntry