feat(dashboard, i18n): 增强玩家身份信息展示并完善多语言支持

更新仪表盘相关组件，采用新的玩家身份信息字段（Player Identity Columns），提升数据展示的清晰度与可读性。
优化奖池记录（Jackpot Records）中的玩家信息展示方式，便于快速识别玩家身份。
改进结算明细（Settlement Details）页面的玩家身份展示，提升数据追踪与核对效率。
更新玩家注单（Player Tickets）与钱包交易（Wallet Transactions）相关界面，统一使用新的玩家身份信息展示逻辑。
在英文、尼泊尔语与中文语言包中新增玩家相关术语翻译，增强多语言支持。
提升系统整体用户体验，确保各模块中的玩家信息展示更加一致、直观。

src/components/admin/admin-player-identity-columns.tsx

@@ -0,0 +1,105 @@
+"use client";
+
+import { useTranslation } from "react-i18next";
+
+import { TableCell, TableHead } from "@/components/ui/table";
+import { cn } from "@/lib/utils";
+
+export type AdminPlayerIdentityFields = {
+  site_code?: string | null;
+  site_player_id?: string | null;
+  username?: string | null;
+  nickname?: string | null;
+};
+
+export function adminPlayerDisplayName(row: AdminPlayerIdentityFields): string {
+  const nickname = row.nickname?.trim() ?? "";
+  const username = row.username?.trim() ?? "";
+  if (nickname !== "") {
+    return nickname;
+  }
+  if (username !== "") {
+    return username;
+  }
+
+  return "—";
+}
+
+function cellText(value: string | null | undefined): string {
+  const trimmed = value?.trim() ?? "";
+  return trimmed !== "" ? trimmed : "—";
+}
+
+type HeadProps = { className?: string };
+type CellProps = { row: AdminPlayerIdentityFields; className?: string };
+
+export function AdminPlayerSiteHead({ className }: HeadProps): React.ReactElement {
+  const { t } = useTranslation("common");
+  return (
+    <TableHead className={cn("whitespace-nowrap", className)}>
+      {t("playerColumns.site")}
+    </TableHead>
+  );
+}
+
+export function AdminPlayerDisplayHead({ className }: HeadProps): React.ReactElement {
+  const { t } = useTranslation("common");
+  return (
+    <TableHead className={cn("whitespace-nowrap", className)}>
+      {t("playerColumns.display")}
+    </TableHead>
+  );
+}
+
+export function AdminPlayerSiteIdHead({ className }: HeadProps): React.ReactElement {
+  const { t } = useTranslation("common");
+  return (
+    <TableHead className={cn("whitespace-nowrap", className)}>
+      {t("playerColumns.sitePlayerId")}
+    </TableHead>
+  );
+}
+
+export function AdminPlayerIdentityHeads({ className }: { className?: string }): React.ReactElement {
+  return (
+    <>
+      <AdminPlayerSiteHead className={className} />
+      <AdminPlayerDisplayHead className={className} />
+      <AdminPlayerSiteIdHead className={className} />
+    </>
+  );
+}
+
+export function AdminPlayerSiteCell({ row, className }: CellProps): React.ReactElement {
+  return (
+    <TableCell className={cn("text-xs", className)}>
+      <span className="font-mono text-xs">{cellText(row.site_code)}</span>
+    </TableCell>
+  );
+}
+
+export function AdminPlayerDisplayCell({ row, className }: CellProps): React.ReactElement {
+  return (
+    <TableCell className={cn("text-xs", className)}>
+      {adminPlayerDisplayName(row)}
+    </TableCell>
+  );
+}
+
+export function AdminPlayerSiteIdCell({ row, className }: CellProps): React.ReactElement {
+  return (
+    <TableCell className={cn("text-xs", className)}>
+      <span className="font-mono text-xs">{cellText(row.site_player_id)}</span>
+    </TableCell>
+  );
+}
+
+export function AdminPlayerIdentityCells({ row, className }: CellProps): React.ReactElement {
+  return (
+    <>
+      <AdminPlayerSiteCell row={row} className={className} />
+      <AdminPlayerDisplayCell row={row} className={className} />
+      <AdminPlayerSiteIdCell row={row} className={className} />
+    </>
+  );
+}