Add Cashu escrow settings + a "require escrow" listing flag

- useEscrowPrefs (device-local): default lock window, preferred escrow mint,
  require-escrow default for new listings.
- EscrowSettingsCard on the Wallet (native-only, beside EscrowKeyCard).
- EscrowRequestDialog now defaults its lock window + funding mint from the prefs.
- Listings gain an optional ['escrow','required'] tag: a toggle on
  CreateListingPage (defaulted from the pref) and a 🔒 badge on the card.

src/components/EscrowRequestDialog.tsx

@@ -10,9 +10,10 @@ import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 import { Label } from '@/components/ui/label';
 import { useCashuEscrow } from '@/hooks/wallet/useCashuEscrow';
+import { useEscrowPrefs } from '@/hooks/wallet/useEscrowPrefs';
 import { useTradeAttestationRequest } from '@/hooks/useTradeAttestations';
 import { useToast } from '@/hooks/useToast';
-import { ESCROW_DEFAULT_LOCK_DAYS, ESCROW_MIN_LOCK_DAYS } from '@/lib/cashuEscrow';
+import { ESCROW_MIN_LOCK_DAYS } from '@/lib/cashuEscrow';
 import { Loader2, Lock } from 'lucide-react';
 import { useTranslation } from '@/contexts/language';
 
@@ -39,11 +40,12 @@ export function EscrowRequestDialog({
 }) {
   const { t } = useTranslation();
   const escrow = useCashuEscrow();
+  const { prefs } = useEscrowPrefs();
   const { publishRequest, isPending: publishing } = useTradeAttestationRequest();
   const { toast } = useToast();
 
   const [amount, setAmount] = useState('');
-  const [days, setDays] = useState(String(ESCROW_DEFAULT_LOCK_DAYS));
+  const [days, setDays] = useState(String(prefs.defaultLockDays));
   const [busy, setBusy] = useState(false);
 
   const submit = async () => {
@@ -61,7 +63,7 @@ export function EscrowRequestDialog({
 
     setBusy(true);
     try {
-      const { token } = await escrow.createEscrow({ amountSats, sellerPubkey, lockDays });
+      const { token } = await escrow.createEscrow({ amountSats, sellerPubkey, lockDays, mintUrl: prefs.preferredMintUrl || undefined });
       await publishRequest({
         listing,
         attestor: sellerPubkey,

src/components/MarketplaceItemCard.tsx

@@ -363,6 +363,11 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
                       : `📍📦 ${t('marketUi.gearSwap.pickupOrShip')}`}
                 </Badge>
               )}
+              {item.escrow === 'required' && (
+                <Badge variant="outline" className="text-xs border-[#ff6600]/50 bg-[#ff6600]/10 text-[#ff6600]">
+                  🔒 {t('marketUi.create.requireEscrow')}
+                </Badge>
+              )}
               {distanceKm != null && (
                 <Badge variant="outline" className="text-xs border-gray-600 bg-gray-800/50">
                   {distanceKm < 1

src/components/wallet/EscrowSettingsCard.tsx

@@ -0,0 +1,87 @@
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Switch } from '@/components/ui/switch';
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
+import { Settings2 } from 'lucide-react';
+import { useTranslation } from '@/contexts/language';
+import { useEscrowPrefs } from '@/hooks/wallet/useEscrowPrefs';
+import { useCashu } from '@/hooks/wallet/useCashu';
+import { isNativePlatform } from '@/lib/platform';
+import { ESCROW_MIN_LOCK_DAYS } from '@/lib/cashuEscrow';
+
+/**
+ * Cashu escrow preferences (device-local): the default lock window offered to
+ * buyers, the mint funds come from, and whether new listings default to
+ * requiring escrow. Native-only, like the rest of the Cashu wallet.
+ */
+export function EscrowSettingsCard() {
+  const { t } = useTranslation();
+  const { prefs, setPrefs } = useEscrowPrefs();
+  const { mints, isInitialized } = useCashu();
+
+  if (!isNativePlatform() || !isInitialized) return null;
+
+  return (
+    <Card className="bg-black/90 border-2 border-[#ff6600]/25">
+      <CardHeader className="pb-3">
+        <CardTitle className="flex items-center gap-2 text-lg text-[#ff6600]">
+          <Settings2 className="h-5 w-5" />
+          {t('walletUi.escrowSettings.title')}
+        </CardTitle>
+        <CardDescription>{t('walletUi.escrowSettings.desc')}</CardDescription>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        {/* Default lock window */}
+        <div className="space-y-2">
+          <Label htmlFor="escrow-lock-days">{t('walletUi.escrowSettings.lockWindow')}</Label>
+          <div className="flex items-center gap-2">
+            <Input
+              id="escrow-lock-days"
+              type="number"
+              inputMode="numeric"
+              min={ESCROW_MIN_LOCK_DAYS}
+              value={String(prefs.defaultLockDays)}
+              onChange={(e) => {
+                const n = parseInt(e.target.value, 10);
+                setPrefs({ ...prefs, defaultLockDays: Number.isFinite(n) ? Math.max(ESCROW_MIN_LOCK_DAYS, n) : ESCROW_MIN_LOCK_DAYS });
+              }}
+              className="max-w-24 bg-white/5 border-white/10"
+            />
+            <span className="text-sm text-muted-foreground">{t('walletUi.escrowSettings.days')}</span>
+          </div>
+          <p className="text-xs text-muted-foreground">{t('walletUi.escrowSettings.lockWindowHint')}</p>
+        </div>
+
+        {/* Preferred mint */}
+        <div className="space-y-2">
+          <Label>{t('walletUi.escrowSettings.preferredMint')}</Label>
+          <Select
+            value={prefs.preferredMintUrl || '__active__'}
+            onValueChange={(v) => setPrefs({ ...prefs, preferredMintUrl: v === '__active__' ? '' : v })}
+          >
+            <SelectTrigger className="bg-white/5 border-white/10">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              <SelectItem value="__active__">{t('walletUi.escrowSettings.activeMint')}</SelectItem>
+              {mints.map((m) => (
+                <SelectItem key={m.url} value={m.url}>{m.url.replace(/^https?:\/\//, '')}</SelectItem>
+              ))}
+            </SelectContent>
+          </Select>
+          <p className="text-xs text-muted-foreground">{t('walletUi.escrowSettings.preferredMintHint')}</p>
+        </div>
+
+        {/* Require escrow on new listings */}
+        <div className="flex items-center justify-between gap-3 rounded-lg border border-white/10 p-3">
+          <div className="min-w-0">
+            <Label className="text-sm">{t('walletUi.escrowSettings.requireListings')}</Label>
+            <p className="text-xs text-muted-foreground">{t('walletUi.escrowSettings.requireListingsHint')}</p>
+          </div>
+          <Switch checked={prefs.requireEscrow} onCheckedChange={(v) => setPrefs({ ...prefs, requireEscrow: v })} />
+        </div>
+      </CardContent>
+    </Card>
+  );
+}

src/hooks/wallet/useEscrowPrefs.ts

@@ -0,0 +1,25 @@
+import { useLocalStorage } from '@/hooks/useLocalStorage';
+import { ESCROW_DEFAULT_LOCK_DAYS } from '@/lib/cashuEscrow';
+
+export interface EscrowPrefs {
+  /** Default lock window (days) offered when a buyer opens the escrow dialog. */
+  defaultLockDays: number;
+  /** Preferred mint URL for funding escrow ('' = the active/first mint). */
+  preferredMintUrl: string;
+  /** Default the "require escrow" flag on new listings. */
+  requireEscrow: boolean;
+}
+
+const DEFAULT_PREFS: EscrowPrefs = {
+  defaultLockDays: ESCROW_DEFAULT_LOCK_DAYS,
+  preferredMintUrl: '',
+  requireEscrow: false,
+};
+
+const KEY = 'skatespots:escrow:prefs';
+
+/** Device-local Cashu escrow preferences (see ESCROW.md). */
+export function useEscrowPrefs() {
+  const [prefs, setPrefs] = useLocalStorage<EscrowPrefs>(KEY, DEFAULT_PREFS);
+  return { prefs, setPrefs };
+}

src/i18n/en.ts

@@ -1510,6 +1510,8 @@ marketUi: {
       bothHint: 'Either',
       addressNote: 'We never collect your address — for shipping, share it privately in the trade chat.',
       postageLabel: 'Who pays postage?',
+      requireEscrow: 'Require escrow',
+      requireEscrowHint: 'Ask the buyer to settle through Cashu escrow.',
       postageBuyer: 'Buyer pays',
       postageSeller: 'I pay',
       postageSplit: 'Split',
@@ -5759,6 +5761,18 @@ walletUi: {
       publishedDesc: 'Buyers can now lock funds to you for a trade.',
       failed: 'Could not turn on escrow',
     },
+    escrowSettings: {
+      title: 'Escrow settings',
+      desc: 'Defaults for Cashu escrow trades. Device-local.',
+      lockWindow: 'Default lock window',
+      lockWindowHint: 'How long funds stay locked before the buyer can reclaim them. Longer is safer for the seller.',
+      days: 'days',
+      preferredMint: 'Mint for escrow',
+      activeMint: 'Active mint',
+      preferredMintHint: 'Which mint funds escrow. Use a trustworthy one.',
+      requireListings: 'Require escrow on new listings',
+      requireListingsHint: 'Pre-selects “Require escrow” when you list an item.',
+    },
     privacy: {
       title: 'Privacy Tips',
       subtitle: 'Learn how to protect your financial privacy',

src/i18n/es.ts

@@ -1510,6 +1510,8 @@ marketUi: {
       bothHint: 'Cualquiera',
       addressNote: 'Nunca recogemos tu dirección — para envíos, compártela en privado en el chat del trato.',
       postageLabel: '¿Quién paga el envío?',
+      requireEscrow: 'Exigir depósito',
+      requireEscrowHint: 'Pide al comprador liquidar mediante depósito Cashu.',
       postageBuyer: 'Paga el comprador',
       postageSeller: 'Pago yo',
       postageSplit: 'A medias',
@@ -5759,6 +5761,18 @@ walletUi: {
       publishedDesc: 'Los compradores ya pueden bloquear fondos para ti en un trato.',
       failed: 'No se pudo activar el depósito',
     },
+    escrowSettings: {
+      title: 'Ajustes del depósito',
+      desc: 'Valores por defecto para tratos con depósito Cashu. Local del dispositivo.',
+      lockWindow: 'Plazo de bloqueo por defecto',
+      lockWindowHint: 'Cuánto tiempo quedan bloqueados los fondos antes de que el comprador pueda recuperarlos. Más largo es más seguro para el vendedor.',
+      days: 'días',
+      preferredMint: 'Mint para el depósito',
+      activeMint: 'Mint activo',
+      preferredMintHint: 'Qué mint financia el depósito. Usa uno de confianza.',
+      requireListings: 'Exigir depósito en anuncios nuevos',
+      requireListingsHint: 'Preselecciona «Exigir depósito» al publicar un artículo.',
+    },
     privacy: {
       title: 'Consejos de privacidad',
       subtitle: 'Aprende a proteger tu privacidad financiera',

src/lib/types.ts

@@ -3702,6 +3702,8 @@ export interface MarketplaceItem {
   fulfilment?: 'pickup' | 'ships' | 'both';
   /** Who pays postage, when the deal ships. */
   shipping?: 'buyer' | 'seller' | 'split';
+  /** Seller asks the buyer to settle via Cashu escrow. */
+  escrow?: 'required';
   /** NIP-13 proof-of-work difficulty (leading zero bits) on the event id. */
   powDifficulty?: number;
   expiration?: number; // Unix timestamp
@@ -3785,6 +3787,7 @@ export function parseMarketplaceItem(event: NostrEvent): MarketplaceItem | null
   const listingType = event.tags.find(([name]) => name === 'listing_type')?.[1] as MarketplaceItem['listingType'];
   const fulfilment = event.tags.find(([name]) => name === 'fulfilment')?.[1] as MarketplaceItem['fulfilment'];
   const shipping = event.tags.find(([name]) => name === 'shipping')?.[1] as MarketplaceItem['shipping'];
+  const escrow = event.tags.find(([name]) => name === 'escrow')?.[1] as MarketplaceItem['escrow'];
   const powDifficulty = event.tags.some(([name]) => name === 'nonce')
     ? countLeadingZeroBits(event.id)
     : undefined;
@@ -3823,6 +3826,7 @@ export function parseMarketplaceItem(event: NostrEvent): MarketplaceItem | null
     listingType,
     fulfilment,
     shipping,
+    escrow,
     powDifficulty,
     size,
     expiration,

src/pages/CreateListingPage.tsx

@@ -14,6 +14,8 @@ import { useCurrentUser } from '@/hooks/useCurrentUser';
 import { useUploadFile } from '@/hooks/useUploadFile';
 import { useToast } from '@/hooks/useToast';
 import { useLocalStorage } from '@/hooks/useLocalStorage';
+import { Switch } from '@/components/ui/switch';
+import { useEscrowPrefs } from '@/hooks/wallet/useEscrowPrefs';
 import { useSkateSpot, useSkateSpots } from '@/hooks/useSkateSpots';
 import { useListingRestrictions, recordListingCreation } from '@/hooks/useListingRestrictions';
 import { LoginArea } from '@/components/auth/LoginArea';
@@ -65,6 +67,8 @@ export default function CreateListingPage() {
   const [listingType, setListingType] = useState<'selling' | 'wtb'>('selling');
   const [fulfilment, setFulfilment] = useState<'pickup' | 'ships' | 'both'>('pickup');
   const [shippingWho, setShippingWho] = useState<'buyer' | 'seller' | 'split'>('buyer');
+  const { prefs: escrowPrefs } = useEscrowPrefs();
+  const [requireEscrow, setRequireEscrow] = useState(escrowPrefs.requireEscrow);
   const [category, setCategory] = useState(searchParams.get('category') || '');
   const [title, setTitle] = useState(searchParams.get('title') || '');
   const [description, setDescription] = useState(searchParams.get('description') || '');
@@ -282,6 +286,7 @@ export default function CreateListingPage() {
       if (listingType === 'selling') {
         tags.push(['fulfilment', fulfilment]);
         if (fulfilment !== 'pickup') tags.push(['shipping', shippingWho]);
+        if (requireEscrow) tags.push(['escrow', 'required']);
       }
       
       // Size with optional modifiers
@@ -755,6 +760,16 @@ export default function CreateListingPage() {
                 </div>
               )}
 
+              {listingType === 'selling' && (
+                <div className="flex items-center justify-between gap-3 rounded-lg border border-gray-700 p-3">
+                  <div className="min-w-0">
+                    <Label className="text-sm">{t('marketUi.create.requireEscrow')}</Label>
+                    <p className="text-xs text-gray-500">{t('marketUi.create.requireEscrowHint')}</p>
+                  </div>
+                  <Switch checked={requireEscrow} onCheckedChange={setRequireEscrow} />
+                </div>
+              )}
+
               {/* Size */}
               {currentSizeOptions.length > 0 && (
                 <div className="space-y-2">

src/pages/WalletPage.tsx

@@ -12,6 +12,7 @@ import { useTranslation } from '@/contexts/language';
 import { LoginArea } from '@/components/auth/LoginArea';
 import { CashuWalletCard } from '@/components/wallet/CashuWalletCard';
 import { EscrowKeyCard } from '@/components/wallet/EscrowKeyCard';
+import { EscrowSettingsCard } from '@/components/wallet/EscrowSettingsCard';
 import { NwcWalletCard } from '@/components/wallet/NwcWalletCard';
 import { cn } from '@/lib/utils';
 import {
@@ -263,6 +264,7 @@ export default function WalletPage() {
             {/* Cashu wallet — native app, self-custodial ecash */}
             <CashuWalletCard />
             <EscrowKeyCard />
+            <EscrowSettingsCard />
 
             <Link
               to="/mints"