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/wallet/WalletButton.tsx

@@ -1,5 +1,8 @@
+import { Heart } from "lucide-react";
 import { useEffect, useRef, useState } from "react";
+import { Link } from "react-router-dom";
 import { useI18n } from "../i18n";
+import { useLocalizedPath } from "../useLocalizedPath";
 import { shortenAddress, useWallet } from "./WalletProvider";
 
 export function WalletButton({
@@ -10,6 +13,7 @@ export function WalletButton({
   onOpenLogin?: () => void;
 }) {
   const { t } = useI18n();
+  const lp = useLocalizedPath();
   const wallet = useWallet();
   const [open, setOpen] = useState(false);
   const rootRef = useRef<HTMLDivElement>(null);
@@ -53,6 +57,14 @@ export function WalletButton({
             <div className="truncate px-3 py-2 text-xs text-neutral-400">
               {wallet.address}
             </div>
+            <Link
+              to={lp("/favorites")}
+              onClick={() => setOpen(false)}
+              className="flex w-full items-center gap-2 rounded-xl px-3 py-2 text-left text-sm font-medium text-neutral-100 transition hover:bg-ark-gold/10 hover:text-ark-gold"
+            >
+              <Heart size={16} strokeWidth={2} />
+              {t("favorites")}
+            </Link>
             <button
               type="button"
               onClick={() => {