Add clanTag to GameRecord for archiving (#2314)

## Description:

This will be used to determine clan winners in the api layer.

## 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:

evan

src/core/Schemas.ts

@@ -544,6 +544,7 @@ export const ClientMessageSchema = z.discriminatedUnion("type", [
 
 export const PlayerRecordSchema = PlayerSchema.extend({
   persistentID: PersistentIdSchema.nullable(), // WARNING: PII
+  clanTag: z.string().optional(),
   stats: PlayerStatsSchema,
 });
 export type PlayerRecord = z.infer<typeof PlayerRecordSchema>;

src/core/Util.ts

@@ -320,3 +320,12 @@ export function sigmoid(
 ): number {
   return 1 / (1 + Math.exp(-decayRate * (value - midpoint)));
 }
+
+// Compute clan from name
+export function getClanTag(name: string): string | null {
+  if (!name.includes("[") || !name.includes("]")) {
+    return null;
+  }
+  const clanMatch = name.match(/\[([a-zA-Z0-9]{2,5})\]/);
+  return clanMatch ? clanMatch[1].toUpperCase() : null;
+}

src/core/game/Game.ts

@@ -1,5 +1,6 @@
 import { Config } from "../configuration/Config";
 import { AllPlayersStats, ClientID } from "../Schemas";
+import { getClanTag } from "../Util";
 import { GameMap, TileRef } from "./GameMap";
 import {
   GameUpdate,
@@ -407,13 +408,7 @@ export class PlayerInfo {
     public readonly id: PlayerID,
     public readonly nation?: Nation | null,
   ) {
-    // Compute clan from name
-    if (!name.includes("[") || !name.includes("]")) {
-      this.clan = null;
-    } else {
-      const clanMatch = name.match(/\[([a-zA-Z0-9]{2,5})\]/);
-      this.clan = clanMatch ? clanMatch[1].toUpperCase() : null;
-    }
+    this.clan = getClanTag(name);
   }
 }