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/en.ts

@@ -183,8 +183,15 @@ export const enDict: Dict = {
   walletTokenPocket: "TokenPocket",
   walletMetaMask: "MetaMask",
   walletImToken: "imToken",
+  walletTokenPocketLogin: "TokenPocket login",
+  walletTpMobileDesc:
+    "Open TokenPocket to sign, then come back here to finish. You stay in this browser instead of the wallet's in-app browser.",
+  walletTpLoginBtn: "Log in with TokenPocket",
+  walletTpWaiting: "Waiting for your signature in TokenPocket…",
+  walletTpReopen: "Reopen TokenPocket",
   favoritesFilters: "Filters",
   favoriteSessionExpired: "Your session expired. Please sign in again.",
+  loadFailed: "Could not load your favorites.",
   walletChooseDesktop:
     "Choose the wallet you want to use. On desktop, install the matching browser extension.",
   walletChooseMobile: "Choose a wallet app to open this site.",