feat(marketplace): listing detail page + shared trade/escrow actions

- New '/listing/:pubkey/:identifier' page: large gallery + lightbox, full
  description, details, seller trust + trade reputation card, and full actions
  (shared) for buyers and owners (mark sold/relist/delete)
- Extract ListingTradeActions (confirm/escrow request/ask-to-confirm/refund/
  contact + escrow dialog) and use it in BOTH the grid card and the detail page
  so there is one implementation
- useMarketplaceItem(pubkey, identifier) fetch hook
- Cards link their image + title to the detail page
- Smoke test covers /listing/:pubkey/:identifier

Gate: 101 tests, 0 errors/warnings, boot smoke green.

scripts/smoke-test.mjs

@@ -128,6 +128,7 @@ const evalJS = async (expr) => (await send('Runtime.evaluate', { expression: exp
 const ROUTES = [
   '/',
   '/marketplace',
+  '/listing/abc/def',
   '/leaderboards',
   '/bounties',
   '/settings',

src/AppRouter.tsx

@@ -27,6 +27,7 @@ const EditShopPage = lazyWithRetry(() => import("./pages/EditShopPage"));
 const EditEventPage = lazyWithRetry(() => import("./pages/EditEventPage"));
 const EditTourPage = lazyWithRetry(() => import("./pages/EditTourPage"));
 const GearSwapPage = lazyWithRetry(() => import("./pages/GearSwapPage"));
+const ListingDetailPage = lazyWithRetry(() => import("./pages/ListingDetailPage"));
 const SpotDetailPage = lazyWithRetry(() => import("./pages/SpotDetailPage"));
 const ShopDetailPage = lazyWithRetry(() => import("./pages/ShopDetailPage"));
 const EventDetailPage = lazyWithRetry(() => import("./pages/EventDetailPage"));
@@ -119,6 +120,7 @@ export function AppRouter() {
           <Route path="/onboarding" element={<OnboardingPage />} />
           <Route path="/pyramid" element={<PyramidPage />} />
           <Route path="/marketplace" element={<GearSwapPage />} />
+          <Route path="/listing/:pubkey/:identifier" element={<ListingDetailPage />} />
           <Route path="/stats" element={<CommunityStatsPage />} />
           <Route path="/about" element={<AboutPage />} />
           <Route path="/faq" element={<FAQPage />} />

src/components/ListingTradeActions.tsx

@@ -0,0 +1,219 @@
+import { useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { nip19 } from 'nostr-tools';
+import { Button } from '@/components/ui/button';
+import { useCurrentUser } from '@/hooks/useCurrentUser';
+import { useAuthor } from '@/hooks/useAuthor';
+import { useToast } from '@/hooks/useToast';
+import {
+  useListingTrade,
+  useListingTradeRequest,
+  useTradeAttestation,
+  useTradeAttestationRequest,
+} from '@/hooks/useTradeAttestations';
+import { useCashuEscrow } from '@/hooks/wallet/useCashuEscrow';
+import { EscrowRequestDialog } from '@/components/EscrowRequestDialog';
+import { parseEscrowToken } from '@/lib/cashuEscrow';
+import { MessageCircle, Loader2, CheckCircle, Lock, Send, RotateCcw } from 'lucide-react';
+import type { MarketplaceItem } from '@/lib/types';
+
+/**
+ * Buyer/seller trade + escrow actions for a marketplace listing, shared by the
+ * grid card and the listing detail page so there is ONE implementation.
+ *
+ * Payments aren't implemented — buyers contact the seller and settle off-app;
+ * these actions only record/confirm the trade for reputation (and lock escrow
+ * funds on native).
+ */
+export function ListingTradeActions({ item }: { item: MarketplaceItem }) {
+  const { user } = useCurrentUser();
+  const author = useAuthor(item.pubkey);
+  const metadata = author.data?.metadata;
+  const { toast } = useToast();
+  const navigate = useNavigate();
+
+  const listingRef = { pubkey: item.pubkey, identifier: item.identifier };
+  const { data: trade } = useListingTrade(listingRef, user?.pubkey);
+  const { data: requestState } = useListingTradeRequest(listingRef, user?.pubkey);
+  const { publishTrade, isPending: confirmingTrade } = useTradeAttestation();
+  const { publishRequest, isPending: requestingTrade } = useTradeAttestationRequest();
+  const escrow = useCashuEscrow();
+
+  const [showEscrow, setShowEscrow] = useState(false);
+
+  const isOwnListing = user?.pubkey === item.pubkey;
+  const isSold = item.status === 'sold';
+  const isWTB = item.listingType === 'wtb';
+
+  const sellerNamedMe =
+    !!user &&
+    !isOwnListing &&
+    !!trade &&
+    trade.attestations.some(
+      (ev) => ev.pubkey === item.pubkey && ev.tags.some(([t, v]) => t === 'p' && v === user.pubkey),
+    );
+  const iConfirmedTrade = !!trade?.iConfirmed;
+  const iRequestedConfirmation = !!requestState?.iRequested;
+
+  const sellerEscrowPubkey =
+    typeof (metadata as Record<string, unknown> | undefined)?.cashu_escrow === 'string'
+      ? ((metadata as Record<string, unknown>).cashu_escrow as string)
+      : undefined;
+  const canEscrow =
+    escrow.available &&
+    !!sellerEscrowPubkey &&
+    !!user &&
+    !isOwnListing &&
+    !iConfirmedTrade &&
+    !sellerNamedMe &&
+    !iRequestedConfirmation;
+
+  const myEscrowToken = requestState?.requests
+    .find((e) => e.pubkey === user?.pubkey)
+    ?.tags.find(([t]) => t === 'cashu_token')?.[1];
+  const myEscrowRefundable = (() => {
+    if (!myEscrowToken) return false;
+    try {
+      const info = parseEscrowToken(myEscrowToken);
+      return info.locked && info.refundable;
+    } catch {
+      return false;
+    }
+  })();
+
+  const handleConfirmTrade = async () => {
+    if (!user) return;
+    try {
+      await publishTrade({ listing: listingRef, role: 'bought', counterparty: item.pubkey });
+      toast({ title: 'Trade confirmed', description: 'Reputation updated for both of you.' });
+    } catch (e) {
+      toast({
+        title: 'Could not confirm the trade',
+        description: e instanceof Error ? e.message : 'Something went wrong.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  const handleRequestConfirmation = async () => {
+    if (!user) return;
+    try {
+      await publishRequest({
+        listing: listingRef,
+        attestor: item.pubkey,
+        note: `Please confirm our trade for “${item.title}”.`,
+      });
+      toast({
+        title: 'Confirmation requested',
+        description: 'The seller can now confirm the sale and build both reputations.',
+      });
+    } catch (e) {
+      toast({
+        title: 'Could not send the request',
+        description: e instanceof Error ? e.message : 'Something went wrong.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  const handleRefundEscrow = async () => {
+    if (!myEscrowToken) return;
+    try {
+      await escrow.redeemEscrow(myEscrowToken);
+      toast({ title: 'Escrow refunded', description: 'The funds are back in your Cashu wallet.' });
+    } catch (e) {
+      toast({
+        title: 'Could not refund escrow',
+        description: e instanceof Error ? e.message : 'Something went wrong.',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  return (
+    <div className="space-y-2">
+      {/* Buyer: confirm the trade the seller recorded (builds both reps) */}
+      {sellerNamedMe && !iConfirmedTrade && (
+        <Button
+          size="sm"
+          onClick={handleConfirmTrade}
+          disabled={confirmingTrade}
+          className="w-full gap-2 bg-[#ccff00] font-bold text-black hover:bg-[#ccff00]/90"
+        >
+          {confirmingTrade ? <Loader2 className="h-4 w-4 animate-spin" /> : <CheckCircle className="h-4 w-4" />}
+          Confirm this trade
+        </Button>
+      )}
+
+      {/* Buyer: lock funds in Cashu escrow and request confirmation (native) */}
+      {canEscrow && (
+        <Button
+          size="sm"
+          variant="outline"
+          onClick={() => setShowEscrow(true)}
+          className="w-full gap-2 border-[#ff6600]/40 text-[#ff6600] hover:bg-[#ff6600]/10"
+        >
+          <Lock className="h-4 w-4" />
+          Escrow &amp; request
+        </Button>
+      )}
+
+      {/* Buyer: ask the seller to record the sale (kind 31872 request) */}
+      {!canEscrow && user && !isOwnListing && isSold && !iConfirmedTrade && !sellerNamedMe && !iRequestedConfirmation && (
+        <Button
+          size="sm"
+          variant="outline"
+          onClick={handleRequestConfirmation}
+          disabled={requestingTrade}
+          className="w-full gap-2 border-[#ccff00]/40 text-[#ccff00] hover:bg-[#ccff00]/10"
+        >
+          {requestingTrade ? <Loader2 className="h-4 w-4 animate-spin" /> : <Send className="h-4 w-4" />}
+          Ask seller to confirm
+        </Button>
+      )}
+      {iRequestedConfirmation && !iConfirmedTrade && (
+        <p className="text-xs text-center text-gray-500">
+          Confirmation requested — waiting on the seller.
+        </p>
+      )}
+
+      {/* Buyer: reclaim escrow after the locktime if the seller didn't deliver */}
+      {escrow.available && myEscrowRefundable && (
+        <Button
+          size="sm"
+          variant="outline"
+          onClick={handleRefundEscrow}
+          className="w-full gap-2 border-[#ccff00]/40 text-[#ccff00] hover:bg-[#ccff00]/10"
+        >
+          <RotateCcw className="h-4 w-4" />
+          Refund escrow
+        </Button>
+      )}
+
+      {/* Contact button */}
+      <Button
+        variant="outline"
+        size="sm"
+        className={`w-full gap-2 ${
+          isWTB
+            ? 'border-blue-500/50 text-blue-400 hover:bg-blue-500/10'
+            : 'border-orange-500/50 text-orange-400 hover:bg-orange-500/10'
+        }`}
+        onClick={() => navigate(`/messages/${nip19.npubEncode(item.pubkey)}`)}
+      >
+        <MessageCircle className="h-4 w-4" />
+        {isWTB ? 'I Have This!' : 'Contact Seller'}
+      </Button>
+
+      {canEscrow && sellerEscrowPubkey && (
+        <EscrowRequestDialog
+          open={showEscrow}
+          onOpenChange={setShowEscrow}
+          listing={listingRef}
+          sellerPubkey={sellerEscrowPubkey}
+          sellerName={metadata?.name ?? ''}
+        />
+      )}
+    </div>
+  );
+}

src/components/MarketplaceItemCard.tsx

@@ -1,6 +1,5 @@
 import { useState } from 'react';
-import { useNavigate } from 'react-router-dom';
-import { nip19 } from 'nostr-tools';
+import { Link } from 'react-router-dom';
 import { Card, CardContent } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -20,14 +19,12 @@ import { useSellerInfo } from '@/hooks/useSellerInfo';
 import { useTrustScore } from '@/hooks/useTrustScore';
 import { useMarkListingSold } from '@/hooks/useMarkListingSold';
 import { MarkSoldDialog } from '@/components/MarkSoldDialog';
-import { EscrowRequestDialog } from '@/components/EscrowRequestDialog';
-import { useCashuEscrow } from '@/hooks/wallet/useCashuEscrow';
-import { parseEscrowToken } from '@/lib/cashuEscrow';
-import { useListingTrade, useTradeAttestation, useTradeReputation, useListingTradeRequest, useTradeAttestationRequest } from '@/hooks/useTradeAttestations';
+import { ListingTradeActions } from '@/components/ListingTradeActions';
+import { useTradeReputation } from '@/hooks/useTradeAttestations';
 import { DeleteEntityDialog } from '@/components/DeleteEntityDialog';
 import { genUserName } from '@/lib/genUserName';
 import { TrustBadge } from '@/components/TrustBadge';
-import { MessageCircle, Clock, Search, Tag, Flag, MoreVertical, ShieldCheck, Calendar, Package, AlertTriangle, CheckCircle, RotateCcw, Trash2, Loader2, Send, Lock } from 'lucide-react';
+import { Clock, Search, Tag, Flag, MoreVertical, ShieldCheck, Calendar, Package, AlertTriangle, CheckCircle, RotateCcw, Trash2, Loader2 } from 'lucide-react';
 import { formatDistanceToNow } from 'date-fns';
 import type { MarketplaceItem } from '@/lib/types';
 import { GEAR_CONDITIONS, GEAR_CATEGORIES, PRICE_TYPES, LISTING_REPORT_REASONS, formatPrice } from '@/lib/types';
@@ -40,7 +37,6 @@ interface MarketplaceItemCardProps {
 export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCardProps) {
   const { user } = useCurrentUser();
   const { toast } = useToast();
-  const navigate = useNavigate();
   const { mutateAsync: publishEvent } = useNostrPublish();
   const { relist, isPending: isUpdatingStatus } = useMarkListingSold();
   const author = useAuthor(item.pubkey);
@@ -48,8 +44,6 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
   const displayName = metadata?.name ?? genUserName(item.pubkey);
   const avatar = metadata?.picture;
 
-  const npub = nip19.npubEncode(item.pubkey);
-
   // Fetch reports for this listing
   const { data: reportData } = useListingReports(item.id, item.pubkey);
   
@@ -68,13 +62,7 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
 
   // Trade attestations (Attestations NIP, kind 31871) — see useTradeAttestations.
   const listingRef = { pubkey: item.pubkey, identifier: item.identifier };
-  const { data: trade } = useListingTrade(listingRef, user?.pubkey);
   const { data: sellerRep } = useTradeReputation(item.pubkey);
-  const { publishTrade, isPending: confirmingTrade } = useTradeAttestation();
-  const { data: requestState } = useListingTradeRequest(listingRef, user?.pubkey);
-  const { publishRequest, isPending: requestingTrade } = useTradeAttestationRequest();
-  const escrow = useCashuEscrow();
-  const [showEscrow, setShowEscrow] = useState(false);
 
   // Format price display
   const priceDisplay = item.price
@@ -84,6 +72,7 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
   const timeAgo = formatDistanceToNow(new Date(item.createdAt * 1000), { addSuffix: true });
 
   const primaryImage = item.images[0];
+  const detailUrl = `/listing/${item.pubkey}/${item.identifier}`;
   const isWTB = item.listingType === 'wtb';
   // Expiration is stored as unix timestamp in seconds
   const isExpired = item.expiration ? item.expiration < Math.floor(Date.now() / 1000) : false;
@@ -169,98 +158,6 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
   const isOwnListing = user?.pubkey === item.pubkey;
   const isSold = item.status === 'sold';
 
-  // Was the viewer named as the buyer by the seller? Then they can confirm.
-  const sellerNamedMe =
-    !!user &&
-    !isOwnListing &&
-    !!trade &&
-    trade.attestations.some(
-      (ev) => ev.pubkey === item.pubkey && ev.tags.some(([t, v]) => t === 'p' && v === user.pubkey),
-    );
-  const iConfirmedTrade = !!trade?.iConfirmed;
-  const iRequestedConfirmation = !!requestState?.iRequested;
-
-  // Seller's advertised Cashu escrow pubkey (kind 0 `cashu_escrow`), if any.
-  const sellerEscrowPubkey =
-    typeof (metadata as Record<string, unknown> | undefined)?.cashu_escrow === 'string'
-      ? ((metadata as Record<string, unknown>).cashu_escrow as string)
-      : undefined;
-  const canEscrow =
-    escrow.available &&
-    !!sellerEscrowPubkey &&
-    !!user &&
-    !isOwnListing &&
-    !iConfirmedTrade &&
-    !sellerNamedMe &&
-    !iRequestedConfirmation;
-
-  // The buyer's own escrow token (from their published 31872), refundable after
-  // the locktime if the seller never delivered.
-  const myEscrowToken = requestState?.requests
-    .find((e) => e.pubkey === user?.pubkey)
-    ?.tags.find(([t]) => t === 'cashu_token')?.[1];
-  const myEscrowRefundable = (() => {
-    if (!myEscrowToken) return false;
-    try {
-      const info = parseEscrowToken(myEscrowToken);
-      return info.locked && info.refundable;
-    } catch {
-      return false;
-    }
-  })();
-
-  const handleRefundEscrow = async () => {
-    if (!myEscrowToken) return;
-    try {
-      await escrow.redeemEscrow(myEscrowToken);
-      toast({
-        title: 'Escrow refunded',
-        description: 'The funds are back in your Cashu wallet.',
-      });
-    } catch (e) {
-      toast({
-        title: 'Could not refund escrow',
-        description: e instanceof Error ? e.message : 'Something went wrong.',
-        variant: 'destructive',
-      });
-    }
-  };
-
-  const handleConfirmTrade = async () => {
-    if (!user) return;
-    try {
-      await publishTrade({ listing: listingRef, role: 'bought', counterparty: item.pubkey });
-      toast({ title: 'Trade confirmed', description: 'Reputation updated for both of you.' });
-    } catch (e) {
-      toast({
-        title: 'Could not confirm the trade',
-        description: e instanceof Error ? e.message : 'Something went wrong.',
-        variant: 'destructive',
-      });
-    }
-  };
-
-  const handleRequestConfirmation = async () => {
-    if (!user) return;
-    try {
-      await publishRequest({
-        listing: listingRef,
-        attestor: item.pubkey,
-        note: `Please confirm our trade for “${item.title}”.`,
-      });
-      toast({
-        title: 'Confirmation requested',
-        description: 'The seller can now confirm the sale and build both reputations.',
-      });
-    } catch (e) {
-      toast({
-        title: 'Could not send the request',
-        description: e instanceof Error ? e.message : 'Something went wrong.',
-        variant: 'destructive',
-      });
-    }
-  };
-
   const handleRelist = async () => {
     try {
       await relist(item.event);
@@ -295,7 +192,7 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
       <CardContent className="p-4">
         <div className="flex items-start gap-4">
           {/* Product Image */}
-          <div className="flex-shrink-0">
+          <Link to={detailUrl} className="flex-shrink-0" aria-label={`View ${item.title}`}>
             {primaryImage ? (
               <div
                 className={`w-20 h-20 rounded-lg overflow-hidden border-2 ${
@@ -313,7 +210,7 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
                 <span className="text-3xl">{isWTB ? '🔍' : '🛹'}</span>
               </div>
             )}
-          </div>
+          </Link>
 
           {/* Content */}
           <div className="flex-1 min-w-0">
@@ -326,13 +223,15 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
                     WANT TO BUY
                   </Badge>
                 )}
-                <h3
-                  className={`font-black text-base uppercase ${
-                    isWTB ? 'text-blue-400' : 'text-orange-400'
-                  } leading-tight`}
-                >
-                  {item.title}
-                </h3>
+                <Link to={detailUrl}>
+                  <h3
+                    className={`font-black text-base uppercase ${
+                      isWTB ? 'text-blue-400' : 'text-orange-400'
+                    } leading-tight`}
+                  >
+                    {item.title}
+                  </h3>
+                </Link>
               </div>
               <div className="text-right flex items-start gap-1">
                 <div>
@@ -527,85 +426,7 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
             )}
 
             {/* Action Buttons */}
-            <div className="space-y-2">
-              {/* NOTE: there is deliberately no "Pay with Cashu" button here.
-                  Payments are not implemented, and a button that only shows a
-                  "coming soon" toast is a dead end — buyers contact the seller
-                  and arrange payment directly. */}
-
-              {/* Buyer: confirm the trade the seller recorded (builds both reps) */}
-              {sellerNamedMe && !iConfirmedTrade && (
-                <Button
-                  size="sm"
-                  onClick={handleConfirmTrade}
-                  disabled={confirmingTrade}
-                  className="w-full gap-2 bg-[#ccff00] font-bold text-black hover:bg-[#ccff00]/90"
-                >
-                  {confirmingTrade ? <Loader2 className="h-4 w-4 animate-spin" /> : <CheckCircle className="h-4 w-4" />}
-                  Confirm this trade
-                </Button>
-              )}
-
-              {/* Buyer: lock funds in Cashu escrow and request confirmation (native) */}
-              {canEscrow && (
-                <Button
-                  size="sm"
-                  variant="outline"
-                  onClick={() => setShowEscrow(true)}
-                  className="w-full gap-2 border-[#ff6600]/40 text-[#ff6600] hover:bg-[#ff6600]/10"
-                >
-                  <Lock className="h-4 w-4" />
-                  Escrow &amp; request
-                </Button>
-              )}
-
-              {/* Buyer: ask the seller to record the sale (kind 31872 request) */}
-              {!canEscrow && user && !isOwnListing && isSold && !iConfirmedTrade && !sellerNamedMe && !iRequestedConfirmation && (
-                <Button
-                  size="sm"
-                  variant="outline"
-                  onClick={handleRequestConfirmation}
-                  disabled={requestingTrade}
-                  className="w-full gap-2 border-[#ccff00]/40 text-[#ccff00] hover:bg-[#ccff00]/10"
-                >
-                  {requestingTrade ? <Loader2 className="h-4 w-4 animate-spin" /> : <Send className="h-4 w-4" />}
-                  Ask seller to confirm
-                </Button>
-              )}
-              {iRequestedConfirmation && !iConfirmedTrade && (
-                <p className="text-xs text-center text-gray-500">
-                  Confirmation requested — waiting on the seller.
-                </p>
-              )}
-
-              {/* Buyer: reclaim escrow after the locktime if the seller didn't deliver */}
-              {escrow.available && myEscrowRefundable && (
-                <Button
-                  size="sm"
-                  variant="outline"
-                  onClick={handleRefundEscrow}
-                  className="w-full gap-2 border-[#ccff00]/40 text-[#ccff00] hover:bg-[#ccff00]/10"
-                >
-                  <RotateCcw className="h-4 w-4" />
-                  Refund escrow
-                </Button>
-              )}
-
-              {/* Contact button */}
-              <Button
-                variant="outline"
-                size="sm"
-                className={`w-full gap-2 ${
-                  isWTB
-                    ? 'border-blue-500/50 text-blue-400 hover:bg-blue-500/10'
-                    : 'border-orange-500/50 text-orange-400 hover:bg-orange-500/10'
-                }`}
-                onClick={() => navigate(`/messages/${npub}`)}
-              >
-                <MessageCircle className="h-4 w-4" />
-                {isWTB ? 'I Have This!' : 'Contact Seller'}
-              </Button>
-            </div>
+            <ListingTradeActions item={item} />
           </div>
         </div>
       </CardContent>
@@ -620,16 +441,6 @@ export function MarketplaceItemCard({ item, compact = false }: MarketplaceItemCa
         />
       )}
 
-      {/* Buyer: Cashu escrow + confirmation request (native-only) */}
-      {canEscrow && sellerEscrowPubkey && (
-        <EscrowRequestDialog
-          open={showEscrow}
-          onOpenChange={setShowEscrow}
-          listing={listingRef}
-          sellerPubkey={sellerEscrowPubkey}
-          sellerName={displayName}
-        />
-      )}
 
       {/* Delete confirmation (controlled — trigger lives in the owner dropdown) */}
       <DeleteEntityDialog

src/hooks/useMarketplace.ts

@@ -88,3 +88,25 @@ export function useMarketplaceAtSpot(spotPubkey: string, spotIdentifier: string,
     refetchOnMount: true,
   });
 }
+
+/** Fetch a single marketplace listing by author + `d` (including sold/inactive). */
+export function useMarketplaceItem(pubkey?: string, identifier?: string) {
+  const { querySkateContent, getQueryKeySuffix } = useSkateRelays();
+
+  return useQuery({
+    queryKey: ['marketplace-item', pubkey, identifier, getQueryKeySuffix()],
+    enabled: !!pubkey && !!identifier,
+    staleTime: STALE_TIME,
+    gcTime: GC_TIME,
+    queryFn: async (): Promise<MarketplaceItem | null> => {
+      if (!pubkey || !identifier) return null;
+      const signal = AbortSignal.timeout(TIMEOUT);
+      const events = await querySkateContent(
+        [{ kinds: [MARKETPLACE_ITEM_KIND], authors: [pubkey], '#d': [identifier], limit: 5 }],
+        { signal },
+      );
+      const newest = [...events].sort((a, b) => b.created_at - a.created_at)[0];
+      return newest ? parseMarketplaceItem(newest) : null;
+    },
+  });
+}

src/pages/ListingDetailPage.tsx

@@ -0,0 +1,355 @@
+import { useState } from 'react';
+import { useParams, Link, useNavigate } from 'react-router-dom';
+import { useSeoMeta } from '@unhead/react';
+import { nip19 } from 'nostr-tools';
+import { Layout } from '@/components/Layout';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import { Skeleton } from '@/components/ui/skeleton';
+import { ImageWithFallback } from '@/components/ImageWithFallback';
+import { ImageLightbox, type LightboxImage } from '@/components/ImageLightbox';
+import { TrustBadge } from '@/components/TrustBadge';
+import { TradeReputationCard } from '@/components/TradeReputationCard';
+import { ListingTradeActions } from '@/components/ListingTradeActions';
+import { MarkSoldDialog } from '@/components/MarkSoldDialog';
+import { DeleteEntityDialog } from '@/components/DeleteEntityDialog';
+import { useMarketplaceItem } from '@/hooks/useMarketplace';
+import { useMarkListingSold } from '@/hooks/useMarkListingSold';
+import { useCurrentUser } from '@/hooks/useCurrentUser';
+import { useAuthor } from '@/hooks/useAuthor';
+import { useSellerInfo } from '@/hooks/useSellerInfo';
+import { useToast } from '@/hooks/useToast';
+import { formatPrice, GEAR_CONDITIONS, GEAR_CATEGORIES } from '@/lib/types';
+import { genUserName } from '@/lib/genUserName';
+import { cn } from '@/lib/utils';
+import {
+  ArrowLeft,
+  MessageCircle,
+  CheckCircle,
+  RotateCcw,
+  Trash2,
+  Package,
+  MapPin,
+  Calendar,
+  Tag,
+} from 'lucide-react';
+
+/**
+ * Full marketplace listing page (`/listing/:pubkey/:identifier`).
+ *
+ * Gives a listing a dedicated, shareable surface: a large gallery, the full
+ * description, seller trust + trade reputation, and the shared trade/escrow
+ * actions (`ListingTradeActions`, also used by the grid card).
+ */
+export default function ListingDetailPage() {
+  const { pubkey, identifier } = useParams<{ pubkey: string; identifier: string }>();
+  const navigate = useNavigate();
+  const { user } = useCurrentUser();
+  const { toast } = useToast();
+
+  const { data: item, isLoading } = useMarketplaceItem(pubkey, identifier);
+  const author = useAuthor(pubkey);
+  const metadata = author.data?.metadata;
+  const { data: sellerInfo } = useSellerInfo(pubkey);
+  const { relist, isPending: isUpdatingStatus } = useMarkListingSold();
+
+  const [lightboxIndex, setLightboxIndex] = useState<number | null>(null);
+  const [showMarkSold, setShowMarkSold] = useState(false);
+  const [showDelete, setShowDelete] = useState(false);
+
+  useSeoMeta({
+    title: item ? `${item.title} — SkateSpots Marketplace` : 'Listing — SkateSpots',
+    description: item?.summary || item?.description || 'A listing on the SkateSpots marketplace.',
+  });
+
+  if (isLoading) {
+    return (
+      <Layout>
+        <div className="container mx-auto max-w-4xl px-4 py-8 space-y-4">
+          <Skeleton className="h-6 w-40" />
+          <Skeleton className="aspect-video w-full rounded-2xl" />
+          <Skeleton className="h-8 w-2/3" />
+          <Skeleton className="h-24 w-full" />
+        </div>
+      </Layout>
+    );
+  }
+
+  if (!item) {
+    return (
+      <Layout>
+        <div className="container mx-auto max-w-md px-4 py-16 text-center space-y-4">
+          <Package className="mx-auto h-10 w-10 text-gray-600" />
+          <h1 className="text-xl font-black uppercase text-white">Listing not found</h1>
+          <p className="text-sm text-gray-400">It may have been deleted, or the link is wrong.</p>
+          <Button asChild className="bg-[#ccff00] font-bold text-black hover:bg-[#ccff00]/90">
+            <Link to="/marketplace">Back to Gear Swap</Link>
+          </Button>
+        </div>
+      </Layout>
+    );
+  }
+
+  const isOwnListing = user?.pubkey === item.pubkey;
+  const isWTB = item.listingType === 'wtb';
+  const isSold = item.status === 'sold';
+  const priceDisplay = item.price
+    ? `${formatPrice(item.price, item.priceType)}${item.price.frequency ? `/${item.price.frequency}` : ''}`
+    : formatPrice(undefined, item.priceType);
+  const conditionInfo = item.condition ? GEAR_CONDITIONS[item.condition] : null;
+  const categoryLabel = item.category.find((c) => GEAR_CATEGORIES[c as keyof typeof GEAR_CATEGORIES]);
+  const displayName = metadata?.name ?? (pubkey ? genUserName(pubkey) : 'Unknown');
+  const npub = pubkey ? nip19.npubEncode(pubkey) : '';
+
+  const lightboxImages: LightboxImage[] = item.images.map((url) => ({ url, isOwner: isOwnListing }));
+
+  const handleRelist = async () => {
+    try {
+      await relist(item.event);
+      toast({ title: 'Relisted', description: 'Your listing is active again.' });
+    } catch (error) {
+      toast({
+        title: 'Could not update',
+        description: error instanceof Error ? error.message : 'Something went wrong',
+        variant: 'destructive',
+      });
+    }
+  };
+
+  return (
+    <Layout>
+      <div className="container mx-auto max-w-5xl px-4 py-6">
+        <button
+          onClick={() => navigate('/marketplace')}
+          className="mb-4 inline-flex items-center gap-1.5 text-sm text-gray-400 hover:text-white transition-colors"
+        >
+          <ArrowLeft className="h-4 w-4" /> Gear Swap
+        </button>
+
+        <div className="grid grid-cols-1 gap-6 lg:grid-cols-[minmax(0,1fr)_320px]">
+          {/* Main column */}
+          <div className="min-w-0 space-y-6">
+            {/* Gallery */}
+            {item.images.length > 0 && (
+              <div className="grid grid-cols-1 gap-2 sm:grid-cols-2">
+                {item.images.map((url, i) => (
+                  <button
+                    key={url + i}
+                    type="button"
+                    onClick={() => setLightboxIndex(i)}
+                    className={cn(
+                      'group relative overflow-hidden rounded-2xl border border-white/10 bg-black/40',
+                      i === 0 && item.images.length > 1 ? 'sm:col-span-2 aspect-video' : 'aspect-square',
+                    )}
+                    aria-label={`View photo ${i + 1}`}
+                  >
+                    <ImageWithFallback
+                      src={url}
+                      alt={`${item.title} — photo ${i + 1}`}
+                      className="h-full w-full object-cover transition-transform group-hover:scale-[1.02]"
+                    />
+                  </button>
+                ))}
+              </div>
+            )}
+
+            {/* Title + price */}
+            <div>
+              <div className="mb-2 flex flex-wrap items-center gap-2">
+                {isWTB && (
+                  <Badge className="border-blue-500/50 bg-blue-500/20 text-blue-400">
+                    <Package className="mr-1 h-3 w-3" /> WANT TO BUY
+                  </Badge>
+                )}
+                {isSold && (
+                  <Badge variant="secondary" className="bg-gray-700 text-gray-300">
+                    SOLD
+                  </Badge>
+                )}
+                {item.status && item.status !== 'active' && !isSold && (
+                  <Badge variant="secondary" className="bg-yellow-900/50 text-yellow-400">
+                    {item.status.toUpperCase()}
+                  </Badge>
+                )}
+              </div>
+              <h1 className="text-2xl font-black uppercase leading-tight text-white sm:text-3xl">
+                {item.title}
+              </h1>
+              <p className="mt-2 text-2xl font-bold text-orange-400">{priceDisplay}</p>
+            </div>
+
+            {/* Meta badges */}
+            <div className="flex flex-wrap gap-1.5">
+              {conditionInfo && (
+                <Badge variant="outline" className="border-gray-600 bg-gray-800/50">
+                  {conditionInfo.emoji} {conditionInfo.label}
+                </Badge>
+              )}
+              {item.size && (
+                <Badge variant="outline" className="border-gray-600 bg-gray-800/50">
+                  {item.size}
+                </Badge>
+              )}
+              {categoryLabel && (
+                <Badge variant="outline" className="border-gray-600 bg-gray-800/50">
+                  <Tag className="mr-1 h-3 w-3" /> {categoryLabel}
+                </Badge>
+              )}
+            </div>
+
+            {/* Description */}
+            {item.description && (
+              <Card className="bg-black/90 border-white/10">
+                <CardHeader className="pb-2">
+                  <CardTitle className="text-sm uppercase tracking-wide text-gray-400">
+                    Description
+                  </CardTitle>
+                </CardHeader>
+                <CardContent>
+                  <p className="whitespace-pre-wrap break-words text-sm text-gray-200">
+                    {item.description}
+                  </p>
+                </CardContent>
+              </Card>
+            )}
+
+            {/* Details */}
+            <Card className="bg-black/90 border-white/10">
+              <CardContent className="grid grid-cols-1 gap-3 p-4 text-sm sm:grid-cols-2">
+                {item.location && (
+                  <div className="flex items-center gap-2 text-gray-300">
+                    <MapPin className="h-4 w-4 text-gray-500" /> {item.location}
+                  </div>
+                )}
+                {item.availability && (
+                  <div className="flex items-center gap-2 text-gray-300">
+                    <Calendar className="h-4 w-4 text-gray-500" /> Usually here {item.availability}
+                  </div>
+                )}
+                <div className="flex items-center gap-2 text-gray-500">
+                  <Calendar className="h-4 w-4" /> Listed{' '}
+                  {new Date(item.createdAt * 1000).toLocaleDateString()}
+                </div>
+              </CardContent>
+            </Card>
+          </div>
+
+          {/* Sidebar */}
+          <aside className="space-y-6">
+            {/* Seller */}
+            <Card className="bg-black/90 border-white/10">
+              <CardContent className="space-y-3 p-4">
+                <Link to={`/${npub}`} className="flex items-center gap-3 group">
+                  <div className="h-10 w-10 overflow-hidden rounded-full border border-white/10 bg-white/5">
+                    {metadata?.picture ? (
+                      <ImageWithFallback
+                        src={metadata.picture}
+                        alt={displayName}
+                        className="h-full w-full object-cover"
+                      />
+                    ) : null}
+                  </div>
+                  <div className="min-w-0">
+                    <p className="truncate font-bold text-white group-hover:text-[#ccff00]">
+                      {displayName}
+                    </p>
+                    <p className="truncate text-xs text-gray-500">{npub}</p>
+                  </div>
+                  <TrustBadge pubkey={item.pubkey} size="sm" showLabel={false} className="ml-auto" />
+                </Link>
+                {sellerInfo && sellerInfo.listingCount > 0 && (
+                  <p className="text-xs text-gray-500">
+                    {sellerInfo.listingCount} listing{sellerInfo.listingCount === 1 ? '' : 's'} ·{' '}
+                    {sellerInfo.accountAge}d old
+                  </p>
+                )}
+              </CardContent>
+            </Card>
+
+            {/* Actions */}
+            {isOwnListing ? (
+              <Card className="bg-black/90 border-white/10">
+                <CardContent className="space-y-2 p-4">
+                  {isSold ? (
+                    <Button
+                      size="sm"
+                      variant="outline"
+                      onClick={handleRelist}
+                      disabled={isUpdatingStatus}
+                      className="w-full gap-2 border-white/15"
+                    >
+                      <RotateCcw className="h-4 w-4" /> Relist as active
+                    </Button>
+                  ) : (
+                    <Button
+                      size="sm"
+                      onClick={() => setShowMarkSold(true)}
+                      className="w-full gap-2 bg-[#ccff00] font-bold text-black hover:bg-[#ccff00]/90"
+                    >
+                      <CheckCircle className="h-4 w-4" /> Mark as sold
+                    </Button>
+                  )}
+                  <Button
+                    size="sm"
+                    variant="outline"
+                    onClick={() => setShowDelete(true)}
+                    className="w-full gap-2 border-red-500/30 text-red-400 hover:bg-red-500/10"
+                  >
+                    <Trash2 className="h-4 w-4" /> Delete listing
+                  </Button>
+                </CardContent>
+              </Card>
+            ) : (
+              <Card className="bg-black/90 border-white/10">
+                <CardContent className="p-4">
+                  <ListingTradeActions item={item} />
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    asChild
+                    className="mt-2 w-full gap-2 text-gray-400 hover:text-white"
+                  >
+                    <Link to={`/messages/${npub}`}>
+                      <MessageCircle className="h-4 w-4" /> Message {displayName}
+                    </Link>
+                  </Button>
+                </CardContent>
+              </Card>
+            )}
+
+            {/* Seller trade reputation */}
+            <TradeReputationCard pubkey={item.pubkey} />
+          </aside>
+        </div>
+      </div>
+
+      <ImageLightbox
+        images={lightboxImages}
+        index={lightboxIndex}
+        onIndexChange={setLightboxIndex}
+        onClose={() => setLightboxIndex(null)}
+      />
+
+      {isOwnListing && (
+        <MarkSoldDialog
+          open={showMarkSold}
+          onOpenChange={setShowMarkSold}
+          event={item.event}
+          listing={{ pubkey: item.pubkey, identifier: item.identifier }}
+        />
+      )}
+
+      {isOwnListing && (
+        <DeleteEntityDialog
+          event={item.event}
+          entityLabel="listing"
+          entityName={item.title}
+          open={showDelete}
+          onOpenChange={setShowDelete}
+          redirectTo="/marketplace"
+        />
+      )}
+    </Layout>
+  );
+}