feat: redesign wallet login and favorites, fix desktop/mobile bugs

- Remove forced BNB chain switch on injected login (signature is chain-agnostic)
- Refine isMobileDevice so touch Macs stay on desktop flow
- Wire RainbowKit/WalletConnect as a real MetaMask/imToken QR fallback,
  gated on a valid VITE_WALLETCONNECT_PROJECT_ID
- Rebuild login modal: single desktop primary action, collapsible other
  methods, mobile open-app fallback feedback, brand icons
- Add My Favorites entry points (header, mobile menu, wallet dropdown)
- Favorites page: error retry, mobile filter drawer
- Auto sign-out and re-login prompt on favorites 401
- Full native translations for all wallet strings across 7 locales

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

src/locales/en.ts

@@ -171,7 +171,7 @@ export const enDict: Dict = {
   walletDisconnect: "Disconnect",
   walletLoginTitle: "Connect wallet",
   walletLoginDesc:
-    "Sign a message to verify your BNB Chain wallet address. No transaction or gas fee.",
+    "Sign a message to verify your wallet address. No transaction or gas fee.",
   walletInjected: "Use browser wallet",
   walletInjectedDesc: "Sign with the wallet available in this browser.",
   walletNoBrowserWallet: "No browser wallet detected",
@@ -183,14 +183,19 @@ export const enDict: Dict = {
   walletTokenPocket: "TokenPocket",
   walletMetaMask: "MetaMask",
   walletImToken: "imToken",
+  favoritesFilters: "Filters",
+  favoriteSessionExpired: "Your session expired. Please sign in again.",
   walletChooseDesktop:
-    "Choose the wallet you want to use. On desktop, install the matching browser extension and switch to BNB Chain.",
+    "Choose the wallet you want to use. On desktop, install the matching browser extension.",
   walletChooseMobile: "Choose a wallet app to open this site.",
   walletDesktopHint:
     "If no wallet opens after clicking, make sure the matching browser extension is installed and enabled.",
   walletInstallSelected:
     "No {wallet} browser extension detected. Install or enable it, then try again.",
   walletOpen: "Open",
+  walletQrLogin: "QR login",
+  walletMobileQrDesc:
+    "Use another device to scan this QR code and log in to this browser.",
   walletTokenPocketQr: "TokenPocket QR login",
   walletTokenPocketQrDesc:
     "Recommended for China users. Scan with TokenPocket and sign to return login to this browser.",
@@ -212,6 +217,13 @@ export const enDict: Dict = {
   walletLoginSuccess: "Wallet connected",
   walletLoginFailed: "Wallet login failed",
   walletDisconnected: "Wallet disconnected",
+  walletOtherMethods: "Other login methods",
+  walletUseCurrent: "Use current wallet",
+  walletOpening: "Opening {wallet}…",
+  walletAppNotInstalled: "If nothing opened, the app may not be installed.",
+  walletDownloadApp: "Download {wallet}",
+  walletRetry: "Try again",
+  walletConnecting: "Connecting…",
   featureUnavailable: "Not available yet",
   featureUnavailableDesc: "This feature is not available yet.",
   confirm: "Got it",