Complete UX audit P3: API copy URLs, labels, retry, and smoke sync.

Add footer copy-to-clipboard for public APIs, align ops page labels, improve mobile brand lockup, surface WalletConnect posture on wallet tools, add account access discovery, liquidity retry alerts, and refresh smoke-route expectations.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/common/ExplorerRetryAlert.tsx

@@ -0,0 +1,34 @@
+interface ExplorerRetryAlertProps {
+  message: string
+  onRetry?: () => void
+  retryLabel?: string
+  className?: string
+}
+
+export default function ExplorerRetryAlert({
+  message,
+  onRetry,
+  retryLabel = 'Retry',
+  className = '',
+}: ExplorerRetryAlertProps) {
+  return (
+    <div
+      role="alert"
+      className={[
+        'flex flex-col gap-3 rounded-xl border border-red-200 bg-red-50/70 px-4 py-3 dark:border-red-900/50 dark:bg-red-950/20 sm:flex-row sm:items-center sm:justify-between',
+        className,
+      ].join(' ')}
+    >
+      <p className="text-sm leading-6 text-red-900 dark:text-red-100">{message}</p>
+      {onRetry ? (
+        <button
+          type="button"
+          onClick={onRetry}
+          className="shrink-0 rounded-lg border border-red-300 bg-white px-3 py-1.5 text-sm font-semibold text-red-800 transition-colors hover:bg-red-50 dark:border-red-800 dark:bg-red-950 dark:text-red-100 dark:hover:bg-red-900/40"
+        >
+          {retryLabel}
+        </button>
+      ) : null}
+    </div>
+  )
+}