feat(admin): 仪表盘重构、代理线路修复与后台体验优化

- 各角色仪表盘：KPI 可点击跳转、快捷入口、去重冗余区块，代理/站点降级 analytics
- 代理线路：创建玩家权限、侧栏搜索、深链 URL、档案保存与删除预检等修复
- 统一密码最短 6 位；代理模块表格/侧栏背景色一致（admin-table-inset）
- 报表、钱包、对账、开奖、结算、配置等模块结构与 i18n 同步更新

src/lib/admin-nav-label.ts

@@ -23,16 +23,19 @@ const NAV_SEGMENT_I18N_KEYS: Record<string, string> = {
   settings: "settings",
   integration: "integration",
   agents: "agents",
-  agent_list: "agent_list",
   config: "config",
 };
 
+const LEGACY_NAV_SEGMENT_I18N_KEYS: Record<string, string> = {
+  agent_list: "agents",
+};
+
 export function adminNavLabel(
   segment: string,
   t: TFunction,
   apiLabel?: string | null,
 ): string {
-  const key = NAV_SEGMENT_I18N_KEYS[segment];
+  const key = NAV_SEGMENT_I18N_KEYS[segment] ?? LEGACY_NAV_SEGMENT_I18N_KEYS[segment];
   if (key) {
     return t(`nav.${key}`, { ns: "common" });
   }