Add new map “The Box” (#3054)

<img width="1670" height="200" alt="banner"
src="https://github.com/user-attachments/assets/b6561231-71dc-46dd-a521-453d4e97931f"
/>

## Description:

This proposal adds a new, completely flat map called "The Box," where
players will find themselves on a completely flat landmass and will only
be able to trade by land using trains and factories.

- Map size: 2048×2048 pixels
- Binaries generated with MapGenerator (map.bin, map4x.bin, map16x.bin)
- Integrated into arcade category and multiplayer playlist
- English and Spanish translations added
- 13 nations/bots with unique and thematic names:
 
> - **Middle Defender (located in the center)**
> - **King of the Corner (located in the top-left corner)**
> - Suspicious Ally
> - Punch Merchant
> - Nuke Thrower
> - Fullsender
> - Factory Builder
> - Front Manager
> - Box Fighter
> - Cage Liberator
> - Train Trader
> - Non-peaceful Bot
> - **Evan The Dev** (special mention)

All other bots are distributed to cover the map evenly.

<img width="838" height="835" alt="Screenshot 2026-01-28 at 17 39 45"
src="https://github.com/user-attachments/assets/4665088d-cb94-4db3-8602-8a22b63bfee2"
/>

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

sardidefcon

map-generator/assets/maps/thebox/info.json

@@ -0,0 +1,18 @@
+{
+  "name": "TheBox",
+  "nations": [
+    { "coordinates": [10, 10], "flag": "", "name": "King of the Corner" },
+    { "coordinates": [1024, 300], "flag": "", "name": "Suspicious Ally" },
+    { "coordinates": [1650, 400], "flag": "", "name": "Evan The Dev" },
+    { "coordinates": [1024, 1024], "flag": "", "name": "Middle Defender" },
+    { "coordinates": [350, 1024], "flag": "", "name": "Punch Merchant" },
+    { "coordinates": [1700, 1024], "flag": "", "name": "Nuke Thrower" },
+    { "coordinates": [400, 1650], "flag": "", "name": "Fullsender" },
+    { "coordinates": [1024, 1750], "flag": "", "name": "Factory Builder" },
+    { "coordinates": [1650, 1650], "flag": "", "name": "Front Manager" },
+    { "coordinates": [700, 700], "flag": "", "name": "Box Fighter" },
+    { "coordinates": [1350, 700], "flag": "", "name": "Cage Liberator" },
+    { "coordinates": [700, 1350], "flag": "", "name": "Train Trader" },
+    { "coordinates": [1350, 1350], "flag": "", "name": "Non-peaceful Bot" }
+  ]
+}

map-generator/main.go

@@ -63,6 +63,7 @@ var maps = []struct {
 	{Name: "world"},
 	{Name: "lemnos"},
 	{Name: "twolakes"},
+  {Name: "thebox"},
 	{Name: "didier"},
 	{Name: "didierfrance"},
 	{Name: "amazonriver"},

resources/lang/en.json

@@ -328,6 +328,7 @@
     "manicouagan": "Manicouagan",
     "lemnos": "Lemnos",
     "sierpinski": "Sierpinski",
+    "thebox": "The Box",
     "twolakes": "Two Lakes",
     "straitofhormuz": "Strait of Hormuz",
     "surrounded": "Surrounded",

resources/maps/thebox/manifest.json

@@ -0,0 +1,85 @@
+{
+  "map": {
+    "height": 2048,
+    "num_land_tiles": 4194304,
+    "width": 2048
+  },
+  "map16x": {
+    "height": 512,
+    "num_land_tiles": 262144,
+    "width": 512
+  },
+  "map4x": {
+    "height": 1024,
+    "num_land_tiles": 1048576,
+    "width": 1024
+  },
+  "name": "The Box",
+  "nations": [
+    {
+      "coordinates": [10, 10],
+      "flag": "",
+      "name": "King of the Corner"
+    },
+    {
+      "coordinates": [1024, 300],
+      "flag": "",
+      "name": "Suspicious Ally"
+    },
+    {
+      "coordinates": [1650, 400],
+      "flag": "",
+      "name": "Evan The Dev"
+    },
+    {
+      "coordinates": [1024, 1024],
+      "flag": "",
+      "name": "Middle Defender"
+    },
+    {
+      "coordinates": [350, 1024],
+      "flag": "",
+      "name": "Punch Merchant"
+    },
+    {
+      "coordinates": [1700, 1024],
+      "flag": "",
+      "name": "Nuke Thrower"
+    },
+    {
+      "coordinates": [400, 1650],
+      "flag": "",
+      "name": "Fullsender"
+    },
+    {
+      "coordinates": [1024, 1750],
+      "flag": "",
+      "name": "Factory Builder"
+    },
+    {
+      "coordinates": [1650, 1650],
+      "flag": "",
+      "name": "Front Manager"
+    },
+    {
+      "coordinates": [700, 700],
+      "flag": "",
+      "name": "Box Fighter"
+    },
+    {
+      "coordinates": [1350, 700],
+      "flag": "",
+      "name": "Cage Liberator"
+    },
+    {
+      "coordinates": [700, 1350],
+      "flag": "",
+      "name": "Train Trader"
+    },
+    {
+      "coordinates": [1350, 1350],
+      "flag": "",
+      "name": "Non-peaceful Bot"
+    }
+  ]
+}

src/core/game/Game.ts

@@ -111,6 +111,7 @@ export enum GameMapType {
   Manicouagan = "Manicouagan",
   Lemnos = "Lemnos",
   Sierpinski = "Sierpinski",
+  TheBox = "The Box",
   TwoLakes = "Two Lakes",
   StraitOfHormuz = "Strait of Hormuz",
   Surrounded = "Surrounded",
@@ -177,6 +178,7 @@ export const mapCategories: Record<string, GameMapType[]> = {
     GameMapType.Surrounded,
   ],
   arcade: [
+    GameMapType.TheBox,
     GameMapType.Didier,
     GameMapType.DidierFrance,
     GameMapType.Sierpinski,

src/server/MapPlaylist.ts

@@ -65,6 +65,7 @@ const frequency: Partial<Record<GameMapName, number>> = {
   Didier: 1,
   AmazonRiver: 3,
   Sierpinski: 10,
+  TheBox: 3,
 };
 
 interface MapWithMode {