feat(maps): add Arkania DB update-plugin with spawn gate and /move warp

src/Persistence/Initialization/Updates/AddArkaniaMapUpdateSeason6.cs

@@ -0,0 +1,82 @@
+// <copyright file="AddArkaniaMapUpdateSeason6.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.Persistence.Initialization.Updates;
+
+using System.Runtime.InteropServices;
+using MUnique.OpenMU.DataModel.Configuration;
+using MUnique.OpenMU.Persistence.Initialization.VersionSeasonSix.Maps;
+using MUnique.OpenMU.PlugIns;
+
+/// <summary>
+/// Adds the imported Arkania map (number 83): the map definition with its terrain,
+/// a spawn gate on a walkable tile, and a /move warp entry so players can reach it.
+/// Monsters and NPCs are added afterwards via the admin panel.
+/// </summary>
+[PlugIn]
+[Display(Name = PlugInName, Description = PlugInDescription)]
+[Guid("2C8B0A61-6B2E-4D7A-9E3C-7F1A4B2D9E01")]
+public class AddArkaniaMapUpdateSeason6 : UpdatePlugInBase
+{
+    internal const string PlugInName = "Add Arkania map (83)";
+    internal const string PlugInDescription = "Adds the imported Arkania map (number 83) with terrain, a spawn gate, and a /move warp. Monsters/NPCs are added via the admin panel.";
+
+    /// <inheritdoc />
+    public override UpdateVersion Version => UpdateVersion.AddArkaniaMapSeason6;
+
+    /// <inheritdoc />
+    public override string DataInitializationKey => VersionSeasonSix.DataInitialization.Id;
+
+    /// <inheritdoc />
+    public override string Name => PlugInName;
+
+    /// <inheritdoc />
+    public override string Description => PlugInDescription;
+
+    /// <inheritdoc />
+    public override bool IsMandatory => true;
+
+    /// <inheritdoc />
+    public override DateTime CreatedAt => new(2026, 07, 19, 12, 0, 0, DateTimeKind.Utc);
+
+    /// <inheritdoc />
+    protected override ValueTask ApplyAsync(IContext context, GameConfiguration gameConfiguration)
+    {
+        // Idempotency guard: skip if Arkania (83) already exists.
+        if (gameConfiguration.Maps.Any(m => m.Number == Arkania.Number))
+        {
+            return default;
+        }
+
+        var initializer = new Arkania(context, gameConfiguration);
+        initializer.Initialize();      // creates map 83 + loads terrain from Terrain84.att
+        initializer.SetSafezoneMap();
+
+        var arkania = gameConfiguration.Maps.First(m => m.Number == Arkania.Number);
+
+        // Spawn gate on a walkable tile (center of the map; attr 0x00, verified walkable).
+        var spawnGate = context.CreateNew<ExitGate>();
+        arkania.ExitGates.Add(spawnGate);
+        spawnGate.Map = arkania;
+        spawnGate.X1 = 128;
+        spawnGate.Y1 = 128;
+        spawnGate.X2 = 128;
+        spawnGate.Y2 = 128;
+        spawnGate.IsSpawnGate = true;
+
+        // /move warp entry.
+        if (gameConfiguration.WarpList.All(w => w.Name != Arkania.Name))
+        {
+            var warp = context.CreateNew<WarpInfo>();
+            gameConfiguration.WarpList.Add(warp);
+            warp.Index = 83;
+            warp.Name = Arkania.Name;
+            warp.Costs = 5000;
+            warp.LevelRequirement = 10;
+            warp.Gate = spawnGate;
+        }
+
+        return default;
+    }
+}

src/Persistence/Initialization/Updates/UpdateVersion.cs

@@ -484,4 +484,9 @@ public enum UpdateVersion
     /// The version of the <see cref="AddImperialWeapons050UpdateSeason6"/>.
     /// </summary>
     AddImperialWeapons050Season6 = 95,
+
+    /// <summary>
+    /// The version of the <see cref="AddArkaniaMapUpdateSeason6"/>.
+    /// </summary>
+    AddArkaniaMapSeason6 = 96,
 }