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/BrandLockup.tsx

@@ -15,7 +15,7 @@ export default function BrandLockup({ compact = false }: { compact?: boolean })
         </span>
         <span
           className={[
-            'block truncate font-medium uppercase text-gray-500 dark:text-gray-400',
+            'block truncate font-medium uppercase text-gray-500 dark:text-gray-400 max-sm:hidden',
             compact ? 'text-[0.64rem] tracking-[0.13em]' : 'text-[0.68rem] tracking-[0.12em]',
           ].join(' ')}
         >

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>
+  )
+}

frontend/src/components/common/Footer.tsx

@@ -1,5 +1,5 @@
 import Link from 'next/link'
-import { explorerPublicApiLinks } from '@/data/explorerOperations'
+import FooterPublicApiLinks from '@/components/common/FooterPublicApiLinks'
 
 const footerLinkClass =
   'text-gray-600 dark:text-gray-400 hover:text-primary-600 dark:hover:text-primary-400 transition-colors'
@@ -62,16 +62,7 @@ export default function Footer() {
             <div className="mb-3 text-sm font-semibold uppercase tracking-wide text-gray-500 dark:text-gray-400">
               Public APIs
             </div>
-            <ul className="space-y-3 text-sm">
-              {explorerPublicApiLinks.map((link) => (
-                <li key={link.href}>
-                  <a className={footerLinkClass} href={link.href} target="_blank" rel="noopener noreferrer">
-                    {link.label}
-                  </a>
-                  <p className="mt-0.5 text-xs leading-5 text-gray-500 dark:text-gray-500">{link.description}</p>
-                </li>
-              ))}
-            </ul>
+            <FooterPublicApiLinks />
             <p className="mt-3 text-xs leading-5 text-gray-500 dark:text-gray-500">
               Read-only JSON endpoints on the public explorer domain. No API key required.
             </p>

frontend/src/components/common/FooterPublicApiLinks.tsx

@@ -0,0 +1,53 @@
+'use client'
+
+import { useState } from 'react'
+import { explorerPublicApiLinks } from '@/data/explorerOperations'
+
+const footerLinkClass =
+  'text-gray-600 dark:text-gray-400 hover:text-primary-600 dark:hover:text-primary-400 transition-colors'
+
+function absoluteApiUrl(href: string): string {
+  if (typeof window === 'undefined') return href
+  if (href.startsWith('http://') || href.startsWith('https://')) return href
+  return `${window.location.origin}${href.startsWith('/') ? href : `/${href}`}`
+}
+
+export default function FooterPublicApiLinks() {
+  const [copiedHref, setCopiedHref] = useState<string | null>(null)
+
+  const copyUrl = async (href: string) => {
+    if (typeof navigator === 'undefined' || !navigator.clipboard) return
+    try {
+      await navigator.clipboard.writeText(absoluteApiUrl(href))
+      setCopiedHref(href)
+      window.setTimeout(() => setCopiedHref((current) => (current === href ? null : current)), 1500)
+    } catch {
+      setCopiedHref(null)
+    }
+  }
+
+  return (
+    <ul className="space-y-3 text-sm">
+      {explorerPublicApiLinks.map((link) => (
+        <li key={link.href}>
+          <div className="flex flex-wrap items-start justify-between gap-2">
+            <div className="min-w-0 flex-1">
+              <a className={footerLinkClass} href={link.href} target="_blank" rel="noopener noreferrer">
+                {link.label}
+              </a>
+              <p className="mt-0.5 text-xs leading-5 text-gray-500 dark:text-gray-500">{link.description}</p>
+            </div>
+            <button
+              type="button"
+              onClick={() => void copyUrl(link.href)}
+              className="shrink-0 rounded-lg border border-gray-200 px-2.5 py-1 text-xs font-medium text-gray-700 transition-colors hover:border-primary-300 hover:text-primary-700 dark:border-gray-700 dark:text-gray-200 dark:hover:border-primary-500 dark:hover:text-primary-300"
+              aria-label={`Copy URL for ${link.label}`}
+            >
+              {copiedHref === link.href ? 'Copied' : 'Copy URL'}
+            </button>
+          </div>
+        </li>
+      ))}
+    </ul>
+  )
+}

frontend/src/components/common/Navbar.tsx

@@ -717,7 +717,7 @@ export default function Navbar() {
           <div className="flex min-h-[60px] items-center gap-3 lg:min-h-[64px]">
             <Link
               href="/"
-              className="group inline-flex min-w-0 items-center gap-2 rounded-lg py-1.5 pr-2 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-500 focus-visible:ring-offset-2 dark:focus-visible:ring-offset-gray-950"
+              className="group inline-flex shrink-0 items-center gap-2 rounded-lg py-1.5 pr-2 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-500 focus-visible:ring-offset-2 dark:focus-visible:ring-offset-gray-950 max-sm:max-w-[9.5rem] sm:max-w-none"
               onClick={() => setMobileMenuOpen(false)}
               aria-label="Go to DBIS Explorer home"
             >