fix: TokenPocket mobile deep-link login, desktop empty-state, toast above modal

- Mobile TokenPocket now opens the tpoutside:// sign deep link and returns to
  the original browser to finish login (no wallet in-app browser); desktop
  keeps the QR. Fixes mobile login + logout being trapped in TP's browser.
- Desktop without an injected wallet shows a clear message instead of a dead
  button; TokenPocket login card is always available as a working path.
- Raise toast z-index above the login modal so feedback is visible.
- Add native TokenPocket-login strings across 7 locales.
- Document that the live backend lacks favorites + TokenPocket routes (404),
  the real blocker for those features in production.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/locales/zh-CN.ts

@@ -174,8 +174,15 @@ export const zhDict: Dict = {
   walletTokenPocket: "TokenPocket",
   walletMetaMask: "MetaMask",
   walletImToken: "imToken",
+  walletTokenPocketLogin: "TokenPocket 登录",
+  walletTpMobileDesc:
+    "在 TokenPocket 中签名后会自动返回本页面完成登录，留在当前浏览器，不会跳进钱包内置浏览器。",
+  walletTpLoginBtn: "使用 TokenPocket 登录",
+  walletTpWaiting: "等待你在 TokenPocket 中完成签名…",
+  walletTpReopen: "重新打开 TokenPocket",
   favoritesFilters: "筛选",
   favoriteSessionExpired: "登录已过期，请重新登录。",
+  loadFailed: "无法加载收藏，请稍后重试。",
   walletChooseDesktop: "选择你要使用的钱包。电脑端需要先安装对应浏览器插件。",
   walletChooseMobile: "选择钱包 App 打开本站。",
   walletDesktopHint: