feat(frontend): make quote freshness and currency validation explicit in send flow

src/components/QuoteCard.css

@@ -48,3 +48,56 @@
     height: 2px;
   }
 }
+
+.quote-meta {
+  display: flex;
+  flex-direction: column;
+  gap: 0.2rem;
+  margin: 0 0 0.85rem;
+  padding: 0.65rem 0.75rem;
+  border-radius: 8px;
+  background: rgba(15, 23, 42, 0.45);
+  font-size: 0.78rem;
+  color: var(--color-muted);
+}
+
+.quote-meta-line {
+  display: flex;
+  justify-content: space-between;
+  gap: 0.75rem;
+}
+
+.quote-mono {
+  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+  letter-spacing: 0.02em;
+}
+
+.quote-card--expired {
+  border-color: #b45309;
+}
+
+.quote-expired-banner {
+  margin: 0 0 0.85rem;
+  padding: 0.55rem 0.7rem;
+  border-radius: 8px;
+  background: rgba(180, 83, 9, 0.18);
+  color: #fbbf24;
+  font-size: 0.85rem;
+}
+
+.quote-refresh {
+  appearance: none;
+  border: none;
+  background: transparent;
+  color: #fde68a;
+  font: inherit;
+  font-weight: 600;
+  text-decoration: underline;
+  cursor: pointer;
+  padding: 0;
+}
+
+.quote-refresh:focus-visible {
+  outline: 2px solid var(--color-primary);
+  outline-offset: 2px;
+}

src/components/QuoteCard.jsx

@@ -2,31 +2,108 @@ import { formatRate, formatPercent } from '../utils/format.js';
 import { formatMoney } from '../utils/money.js';
 import { FEE_PERCENT } from '../constants/fees.js';
 import { DEFAULT_LOCALE } from '../constants/locales.js';
+import { getCurrency } from '../constants/currencies.js';
+import { quoteSecondsRemaining } from '../utils/quoteBinding.js';
+import { isQuoteExpired } from '../services/contracts/quote.js';
 import './QuoteCard.css';
 
 /**
- * Displays the breakdown of an FX quote: rate, fee and amount received.
+ * Displays the breakdown of an FX quote: rate, fee and amount received,
+ * plus freshness metadata (source, timestamps, currency precision).
  * @param {object} props
  * @param {object} props.quote - quote object from buildQuote()
  * @param {string} [props.locale] - locale used for currency formatting
+ * @param {number|Date} [props.now] - injectable clock for expiry display
+ * @param {Function} [props.onRefresh] - optional refresh handler when expired
  */
-export default function QuoteCard({ quote, locale = DEFAULT_LOCALE }) {
+export default function QuoteCard({
+  quote,
+  locale = DEFAULT_LOCALE,
+  now = Date.now(),
+  onRefresh,
+}) {
   if (!quote) return null;
 
-  const { from, to, rate, sendAmount, fee, receiveAmount } = quote;
+  const { from, to, rate, sendAmount, fee, receiveAmount, source, id } = quote;
+  const fromMeta = getCurrency(from);
+  const toMeta = getCurrency(to);
+  const expired = isQuoteExpired(quote, now);
+  const secondsLeft = quoteSecondsRemaining(quote, now);
+  const createdLabel = formatTimestamp(quote.createdAt, locale);
+  const expiresLabel = formatTimestamp(quote.expiresAt, locale);
 
   return (
-    <div className="quote-card">
+    <div
+      className={`quote-card${expired ? ' quote-card--expired' : ''}`}
+      data-quote-id={id || undefined}
+      data-quote-expired={expired ? 'true' : 'false'}
+    >
       <h3 className="quote-title">Transfer summary</h3>
 
+      <div className="quote-meta" aria-label="Quote details">
+        <div className="quote-meta-line">
+          <span>Source</span>
+          <span>{source || 'unknown'}</span>
+        </div>
+        {id && (
+          <div className="quote-meta-line">
+            <span>Quote id</span>
+            <span className="quote-mono">{shortId(id)}</span>
+          </div>
+        )}
+        <div className="quote-meta-line">
+          <span>Priced at</span>
+          <span>{createdLabel}</span>
+        </div>
+        <div className="quote-meta-line">
+          <span>Expires</span>
+          <span>
+            {expiresLabel}
+            {!expired && secondsLeft > 0 ? ` · ${secondsLeft}s left` : ''}
+          </span>
+        </div>
+        <div className="quote-meta-line">
+          <span>Currencies</span>
+          <span>
+            {fromMeta
+              ? `${fromMeta.flag} ${from} (${fromMeta.minorUnits}dp)`
+              : from}{' '}
+            →{' '}
+            {toMeta ? `${toMeta.flag} ${to} (${toMeta.minorUnits}dp)` : to}
+          </span>
+        </div>
+      </div>
+
+      {expired && (
+        <div className="quote-expired-banner" role="status">
+          This quote has expired.
+          {onRefresh ? (
+            <>
+              {' '}
+              <button
+                type="button"
+                className="quote-refresh"
+                onClick={onRefresh}
+              >
+                Refresh quote
+              </button>
+            </>
+          ) : (
+            ' Refresh to continue.'
+          )}
+        </div>
+      )}
+
       <div className="quote-line">
         <span>You send</span>
-        <span>{formatMoney(sendAmount, from, locale)}</span>
+        <span data-testid="quote-send-amount">
+          {formatMoney(sendAmount, from, locale)}
+        </span>
       </div>
 
       <div className="quote-line quote-muted">
         <span>RemitFlow fee ({formatPercent(FEE_PERCENT, 1)} + flat)</span>
-        <span>- {formatMoney(fee, from, locale)}</span>
+        <span data-testid="quote-fee">- {formatMoney(fee, from, locale)}</span>
       </div>
 
       <div className="quote-line quote-muted">
@@ -38,13 +115,35 @@ export default function QuoteCard({ quote, locale = DEFAULT_LOCALE }) {
 
       <div className="quote-line quote-total">
         <span>Recipient gets</span>
-        <span>{formatMoney(receiveAmount, to, locale)}</span>
+        <span data-testid="quote-receive-amount">
+          {formatMoney(receiveAmount, to, locale)}
+        </span>
       </div>
 
       <p className="quote-note">
         Fees cover the RemitFlow service and Stellar network cost. Rates are
-        indicative and update at confirmation.
+        indicative; confirmation uses the bound quote id until it expires.
       </p>
     </div>
   );
 }
+
+function formatTimestamp(iso, locale) {
+  if (!iso) return '—';
+  const ms = Date.parse(iso);
+  if (Number.isNaN(ms)) return '—';
+  try {
+    return new Intl.DateTimeFormat(locale, {
+      dateStyle: 'medium',
+      timeStyle: 'medium',
+    }).format(new Date(ms));
+  } catch {
+    return new Date(ms).toISOString();
+  }
+}
+
+function shortId(id) {
+  if (!id || id.length <= 16) return id;
+  return `${id.slice(0, 10)}…${id.slice(-4)}`;
+}
+

src/pages/SendMoney.css

@@ -163,3 +163,9 @@
   color: #86efac;
   font-size: 0.875rem;
 }
+
+.send-quote-id {
+  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+  font-size: 0.85em;
+  word-break: break-all;
+}