feat: multi-tier agent hierarchy, wallet ledger, and player UX polish

Add configurable agent max level and default sub-agent credit ratio, per-agent block direct player login on suspend, admin/agent wallet transaction views, and match detail my-bets section with refreshed player card styling.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin/src/utils/agent-level-label.ts

@@ -0,0 +1,20 @@
+const ZH_LEVEL_NUMERALS: Record<number, string> = {
+  1: '一',
+  2: '二',
+  3: '三',
+  4: '四',
+  5: '五',
+  6: '六',
+  7: '七',
+  8: '八',
+  9: '九',
+  10: '十',
+};
+
+/** 中文界面用「一、二、三…」，其他语言用阿拉伯数字 */
+export function formatAgentLevelNumeral(level: number, locale: string): string {
+  if (locale.startsWith('zh') && ZH_LEVEL_NUMERALS[level]) {
+    return ZH_LEVEL_NUMERALS[level];
+  }
+  return String(level);
+}