Clan System Part 1 (#3276)

## Description:

Properly split out clantags and usernames, a clantag should not be part
of a username.

<img width="285" height="286" alt="image"
src="https://github.com/user-attachments/assets/8ac56e82-b12c-4fc0-9774-e445252a6e61"
/>

https://api.openfront.dev/game/ojkqZFb2


<img width="296" height="596" alt="image"
src="https://github.com/user-attachments/assets/85152f80-c111-4f87-b85b-8516c9c6137b"
/>


https://api.openfront.dev/game/MF32BkVc


requires;
https://github.com/openfrontio/infra/pull/264

## 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:

w.o.n

src/server/GamePreviewBuilder.ts

@@ -1,10 +1,12 @@
 import { z } from "zod";
-import { GameInfo } from "../core/Schemas";
+import { ClanTagSchema, GameInfo, UsernameSchema } from "../core/Schemas";
+import { formatPlayerDisplayName } from "../core/Util";
 import { GameMode } from "../core/game/Game";
 
 export const PlayerInfoSchema = z.object({
   clientID: z.string().optional(),
-  username: z.string().optional(),
+  username: UsernameSchema.optional(),
+  clanTag: ClanTagSchema,
   stats: z.unknown().optional(),
 });
 
@@ -85,7 +87,10 @@ function parseWinner(
   if (!winnerArray || winnerArray.length < 2) return undefined;
 
   const idToName = new Map(
-    (players ?? []).map((p) => [p.clientID, p.username]),
+    (players ?? []).map((p) => [
+      p.clientID,
+      p.username ? formatPlayerDisplayName(p.username, p.clanTag) : undefined,
+    ]),
   );
 
   if (winnerArray[0] === "team" && winnerArray.length >= 3) {
@@ -228,7 +233,9 @@ export function buildPreview(
       // Show host
       const hostClient = lobby.clients?.[0];
       if (hostClient?.username) {
-        sections.push(`Host: ${hostClient.username}`);
+        sections.push(
+          `Host: ${formatPlayerDisplayName(hostClient.username, hostClient.clanTag)}`,
+        );
       }
 
       const gameOptions: string[] = [];