refactor(layout, i18n, admin): 优化布局结构与多语言支持

调整 AdminShell 组件的子组件顺序，提升代码可读性。更新 admin-breadcrumb 组件，简化导航标签翻译逻辑，确保多语言支持的一致性。重构 admin-language-switcher 组件，优化语言切换的用户体验，增强界面交互性。更新多语言配置，新增登录界面的副标题，提升用户体验。

src/modules/admin-users/admin-users-console.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import { KeyRound, Pencil, Trash2 } from "lucide-react";
 import { useCallback, useEffect, useMemo, useState } from "react";
 import { useConfirmAction } from "@/hooks/use-confirm-action";
 import { useExportLabels } from "@/hooks/use-export-labels";
@@ -15,6 +16,7 @@ import {
   putAdminUserRoles,
 } from "@/api/admin-users";
 import { AdminListPaginationFooter } from "@/components/admin/admin-list-pagination-footer";
+import { AdminRowActionsMenu } from "@/components/admin/admin-row-actions-menu";
 import { AdminTableExportButton } from "@/components/admin/admin-table-export-button";
 import { AdminStatusBadge } from "@/components/admin/admin-status-badge";
 import { Badge } from "@/components/ui/badge";
@@ -371,7 +373,7 @@ export function AdminUsersConsole(): React.ReactElement {
                   <TableHead className="w-20 whitespace-nowrap">{t("table.status")}</TableHead>
                   <TableHead>{t("table.roles")}</TableHead>
                   <TableHead>{t("table.effective")}</TableHead>
-                  <TableHead className="w-[15rem] whitespace-nowrap text-center">{t("table.actions")}</TableHead>
+                  <TableHead className="w-14 whitespace-nowrap text-center">{t("table.actions")}</TableHead>
                 </TableRow>
               </TableHeader>
               <TableBody>
@@ -412,44 +414,34 @@ export function AdminUsersConsole(): React.ReactElement {
                       </TableCell>
                       <TableCell className="tabular-nums">{row.effective_permissions.length}</TableCell>
                       <TableCell className="text-center">
-                        <div className="flex w-full flex-nowrap justify-center gap-1 whitespace-nowrap">
-                          {canManageUsers ? (
-                          <Button
-                            type="button"
-                            size="sm"
-                            variant={permissionOpen && selectedId === row.id ? "default" : "outline"}
-                            onClick={() => openPermissionEditor(row)}
-                          >
-                            {t("actions.permissions")}
-                          </Button>
-                          ) : null}
-                          {canManageUsers ? (
-                          <Button
-                            type="button"
-                            size="sm"
-                            variant={accountOpen && editingAccountId === row.id ? "secondary" : "outline"}
-                            onClick={() => openEditAccount(row)}
-                          >
-                            {t("actions.edit")}
-                          </Button>
-                          ) : null}
-                          {canManageUsers ? (
-                          <Button
-                            type="button"
-                            size="sm"
-                            variant="destructive"
-                            disabled={profile?.id === row.id}
-                            title={
-                              profile?.id === row.id
-                                ? t("delete.currentUserBlocked")
-                                : t("delete.rowActionTitle")
-                            }
-                            onClick={() => setDeleteTarget(row)}
-                          >
-                            {t("actions.delete")}
-                          </Button>
-                          ) : null}
-                        </div>
+                        {canManageUsers ? (
+                          <AdminRowActionsMenu
+                            actions={[
+                              {
+                                key: "permissions",
+                                label: t("actions.permissions"),
+                                icon: KeyRound,
+                                onClick: () => openPermissionEditor(row),
+                              },
+                              {
+                                key: "edit",
+                                label: t("actions.edit"),
+                                icon: Pencil,
+                                onClick: () => openEditAccount(row),
+                              },
+                              {
+                                key: "delete",
+                                label: t("actions.delete"),
+                                icon: Trash2,
+                                destructive: true,
+                                disabled: profile?.id === row.id,
+                                onClick: () => setDeleteTarget(row),
+                              },
+                            ]}
+                          />
+                        ) : (
+                          <span className="text-xs text-muted-foreground">—</span>
+                        )}
                       </TableCell>
                     </TableRow>
                   ))