VaLink v2.3.18

VaLink Android v2.3.18 (build 30)

• The Google sign-in entry has been removed from the login screen: the native account picker closed without returning an ID token, and the system browser never handed control back to the app. Sign-in is account + password / unified account, which works reliably.
• Credential Manager dependency dropped, so the package is slightly smaller.
• Includes everything from v2.3.17, plus the server-side wallet fix (idempotent charges per order).

中文：

• 登录页移除 Google 登录入口：原生账号选择器选完即关闭、拿不到 ID Token，系统浏览器授权后也不会回到应用；登录回归账号密码 / 统一账号，稳定可用。
• 去掉 Credential Manager 依赖，包体略减。
• 含 v2.3.17 全部功能，以及服务端钱包扣款修复（按订单号幂等）。