MLS for Quick Chat (#686)

## Description:
<img width="842" alt="スクリーンショット 2025-05-09 17 51 27"
src="https://github.com/user-attachments/assets/b9a2cb5b-74d2-4c07-aed2-01d719de6eb4"
/>

MLS
## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

src/core/execution/QuickChatExecution.ts

@@ -1,6 +1,5 @@
-import quickChatData from "../../../resources/QuickChat.json";
 import { consolex } from "../Consolex";
-import { Execution, Game, MessageType, Player, PlayerID } from "../game/Game";
+import { Execution, Game, Player, PlayerID } from "../game/Game";
 
 export class QuickChatExecution implements Execution {
   private sender: Player;
@@ -38,16 +37,22 @@ export class QuickChatExecution implements Execution {
   tick(ticks: number): void {
     const message = this.getMessageFromKey(this.quickChatKey, this.variables);
 
-    this.mg.displayMessage(
-      `${this.sender.name()}: ${message}`,
-      MessageType.CHAT,
+    this.mg.displayChat(
+      message[1],
+      message[0],
+      this.variables,
       this.recipient.id(),
+      true,
+      this.recipient.name(),
     );
 
-    this.mg.displayMessage(
-      `You sent to ${this.recipient.name()}: ${message}`,
-      MessageType.CHAT,
+    this.mg.displayChat(
+      message[1],
+      message[0],
+      this.variables,
       this.sender.id(),
+      false,
+      this.recipient.name(),
     );
 
     consolex.log(
@@ -72,27 +77,8 @@ export class QuickChatExecution implements Execution {
   private getMessageFromKey(
     fullKey: string,
     vars: Record<string, string>,
-  ): string {
-    // Key for translation
-    const [category, key] = fullKey.split(".");
-    const phrases = quickChatData[category];
-
-    if (!phrases) {
-      consolex.warn(`QuickChat: Unknown category '${category}'`);
-      return `[${fullKey}]`;
-    }
-
-    const phraseObj = phrases.find((p) => p.key === key);
-    if (!phraseObj) {
-      consolex.warn(
-        `QuickChat: Key '${key}' not found in category '${category}'`,
-      );
-      return `[${fullKey}]`;
-    }
-
-    return phraseObj.text.replace(
-      /\[(\w+)\]/g,
-      (_, p1) => vars[p1] || `[${p1}]`,
-    );
+  ): string[] {
+    const translated = fullKey.split(".");
+    return translated;
   }
 }

src/core/game/Game.ts

@@ -509,6 +509,15 @@ export interface Game extends GameMap {
     playerID: PlayerID | null,
   ): void;
 
+  displayChat(
+    message: string,
+    category: string,
+    variables: Record<string, string>,
+    playerID: PlayerID | null,
+    isFrom: boolean,
+    recipient: string,
+  ): void;
+
   // Nations
   nations(): Nation[];
 

src/core/game/GameImpl.ts

@@ -606,6 +606,28 @@ export class GameImpl implements Game {
     });
   }
 
+  displayChat(
+    message: string,
+    category: string,
+    variables: Record<string, string> = {},
+    playerID: PlayerID | null,
+    isFrom: boolean | null = null,
+    recipient: string,
+  ): void {
+    let id = null;
+    if (playerID != null) {
+      id = this.player(playerID).smallID();
+    }
+    this.addUpdate({
+      type: GameUpdateType.DisplayChatEvent,
+      key: message,
+      category: category,
+      variables: variables,
+      playerID: id,
+      isFrom: isFrom,
+      recipient: recipient,
+    });
+  }
   addUnit(u: Unit) {
     this.unitGrid.addUnit(u);
   }

src/core/game/GameUpdates.ts

@@ -29,6 +29,7 @@ export enum GameUpdateType {
   Unit,
   Player,
   DisplayEvent,
+  DisplayChatEvent,
   AllianceRequest,
   AllianceRequestReply,
   BrokeAlliance,
@@ -48,6 +49,7 @@ export type GameUpdate =
   | BrokeAllianceUpdate
   | AllianceExpiredUpdate
   | DisplayMessageUpdate
+  | DisplayChatMessageUpdate
   | TargetPlayerUpdate
   | EmojiUpdate
   | WinUpdate
@@ -157,6 +159,16 @@ export interface DisplayMessageUpdate {
   playerID: number | null;
 }
 
+export type DisplayChatMessageUpdate = {
+  type: GameUpdateType.DisplayChatEvent;
+  key: string;
+  category: string;
+  variables?: Record<string, string>;
+  playerID: number | null;
+  isFrom: boolean;
+  recipient: string;
+};
+
 export interface WinUpdate {
   type: GameUpdateType.Win;
   allPlayersStats: AllPlayersStats;