Add invite links with admin-configurable config creation limits.

Admins can create shareable links that allow redeeming a VPN config a set number of times (or unlimited).

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

translations/zh.json

@@ -1,6 +1,7 @@
 {
   "nav_servers": "服务器",
   "nav_users": "用户列表",
+  "nav_invites": "邀请链接",
   "nav_settings": "设置",
   "nav_connections": "连接管理",
   "nav_logout": "登出",
@@ -194,6 +195,41 @@
   "guest_not_found": "404 未找到",
   "guest_not_found_desc": "访客访问已禁用或链接无效。",
   "wrong_guest_password": "密码错误",
+  "invites_title": "邀请链接",
+  "invites_hint": "创建可分享的链接。对方可创建 VPN 配置，次数由您设定。",
+  "invites_empty": "暂无邀请链接",
+  "invites_empty_desc": "创建链接并分享 — 无需注册。",
+  "invite_create": "创建链接",
+  "invite_edit": "编辑链接",
+  "invite_active": "有效",
+  "invite_expired": "已过期",
+  "invite_exhausted": "次数用尽",
+  "invite_uses": "使用次数",
+  "invite_name_label": "链接名称",
+  "invite_max_uses_label": "最多配置数",
+  "invite_max_uses_hint": "此链接可创建配置的次数。0 = 不限。",
+  "invite_user_label": "配置归属用户",
+  "invite_user_hint": "创建的配置会挂到该面板用户下。",
+  "invite_user_required": "请选择用户",
+  "invite_password_label": "密码（可选）",
+  "invite_expires_label": "过期时间（可选）",
+  "invite_clear_expires": "清除过期时间",
+  "invite_note_label": "备注（仅管理员）",
+  "invite_note_placeholder": "内部备注",
+  "invite_reset_used": "重置已用次数",
+  "invite_created": "链接已创建（URL 已复制）",
+  "invite_updated": "链接已更新",
+  "invite_deleted": "链接已删除",
+  "invite_delete_confirm": "删除此邀请链接？",
+  "invite_public_title": "邀请",
+  "invite_public_subtitle": "通过邀请链接获取 VPN 配置",
+  "invite_protected_desc": "此链接受密码保护。",
+  "invite_get_config_hint": "每次点击创建一份新配置并消耗一次额度",
+  "invite_uses_left": "剩余次数：{}",
+  "invite_uses_left_unlimited": "已创建：{}（不限）",
+  "invite_not_found": "404 未找到",
+  "invite_not_found_desc": "链接无效或已删除。",
+  "wrong_invite_password": "密码错误",
   "public_link_label": "公开链接",
   "disabled": "已禁用",
   "out_of": "/",