Add photo carousel to swipe cards

SwipeCard now shows all available photos (up to 5) using
embla-carousel instead of just the thumbnail. Includes prev/next
arrow buttons and dot indicators. The photo area uses touch-action:
pan-x so carousel swipes don't trigger card swipes.

frontend/src/components/SwipeCard.tsx

@@ -1,7 +1,8 @@
-import { useRef } from 'react';
+import { useRef, useState, useCallback, useEffect } from 'react';
 import { animated, useSpring } from '@react-spring/web';
 import { useDrag } from '@use-gesture/react';
-import { Bed, Maximize2, ExternalLink } from 'lucide-react';
+import useEmblaCarousel from 'embla-carousel-react';
+import { Bed, Maximize2, ExternalLink, ChevronLeft, ChevronRight } from 'lucide-react';
 import type { PropertyFeature } from '@/types';
 
 interface SwipeCardProps {
@@ -17,6 +18,21 @@ const SWIPE_THRESHOLD = 100;
 export function SwipeCard({ feature, onSwipe, onTap, isTop, stackIndex }: SwipeCardProps) {
   const hasSwiped = useRef(false);
   const p = feature.properties;
+  const photos = p.photos?.length ? p.photos : p.photo_thumbnail ? [p.photo_thumbnail] : [];
+
+  const [emblaRef, emblaApi] = useEmblaCarousel({ loop: true });
+  const [selectedPhoto, setSelectedPhoto] = useState(0);
+
+  const onPhotoSelect = useCallback(() => {
+    if (!emblaApi) return;
+    setSelectedPhoto(emblaApi.selectedScrollSnap());
+  }, [emblaApi]);
+
+  useEffect(() => {
+    if (!emblaApi) return;
+    emblaApi.on('select', onPhotoSelect);
+    return () => { emblaApi.off('select', onPhotoSelect); };
+  }, [emblaApi, onPhotoSelect]);
 
   const [style, api] = useSpring(() => ({
     x: 0,
@@ -96,11 +112,42 @@ export function SwipeCard({ feature, onSwipe, onTap, isTop, stackIndex }: SwipeC
           />
         )}
 
-        {/* Photo */}
+        {/* Photo carousel */}
-        <div className="h-48 bg-muted relative">
+        <div className="h-48 bg-muted relative" style={{ touchAction: 'pan-x' }}>
-          {p.photo_thumbnail && (
+          {photos.length > 1 ? (
-            <img src={p.photo_thumbnail} alt="Property" className="w-full h-full object-cover" />
+            <>
-          )}
+              <div className="overflow-hidden h-full" ref={emblaRef}>
+                <div className="flex h-full">
+                  {photos.map((url, i) => (
+                    <div key={i} className="flex-[0_0_100%] min-w-0 h-full">
+                      <img src={url} alt={`Photo ${i + 1}`} className="w-full h-full object-cover" loading="lazy" />
+                    </div>
+                  ))}
+                </div>
+              </div>
+              <button
+                className="absolute left-1 top-1/2 -translate-y-1/2 bg-black/50 hover:bg-black/70 text-white rounded-full p-1 z-20 transition-colors"
+                onClick={(e) => { e.stopPropagation(); emblaApi?.scrollPrev(); }}
+                aria-label="Previous photo"
+              >
+                <ChevronLeft className="w-4 h-4" />
+              </button>
+              <button
+                className="absolute right-10 top-1/2 -translate-y-1/2 bg-black/50 hover:bg-black/70 text-white rounded-full p-1 z-20 transition-colors"
+                onClick={(e) => { e.stopPropagation(); emblaApi?.scrollNext(); }}
+                aria-label="Next photo"
+              >
+                <ChevronRight className="w-4 h-4" />
+              </button>
+              <div className="absolute bottom-1 left-0 right-0 flex justify-center gap-1 z-20">
+                {photos.map((_, i) => (
+                  <div key={i} className={`w-1.5 h-1.5 rounded-full ${i === selectedPhoto ? 'bg-white' : 'bg-white/40'}`} />
+                ))}
+              </div>
+            </>
+          ) : photos.length === 1 ? (
+            <img src={photos[0]} alt="Property" className="w-full h-full object-cover" />
+          ) : null}
           <button
             className="absolute top-3 right-3 bg-background/80 backdrop-blur-sm rounded-full p-2 z-20"
             onClick={(e) => {