Use high-res images and return all photos in GeoJSON

- Use maxSizeUrl instead of url for photo URLs (highest available
  resolution from Rightmove)
- Remove 5-photo cap in GeoJSON export — return all available photos
- Apply same fix to both streaming and model-based export paths,
  and to the listing detail API endpoint

api/app.py

@@ -604,14 +604,14 @@ async def get_listing_detail(
     text_info = property_info.get("text", {})
     description = text_info.get("description") if isinstance(text_info, dict) else None
 
-    # Extract photos
+    # Extract photos (prefer high-res maxSizeUrl)
     photos_raw = property_info.get("images", [])
     photos: list[dict] = []
     if isinstance(photos_raw, list):
         for img in photos_raw:
             if isinstance(img, dict):
                 photos.append({
-                    "url": img.get("url", ""),
+                    "url": img.get("maxSizeUrl") or img.get("url", ""),
                     "caption": img.get("caption", ""),
                     "type": img.get("type", ""),
                 })

ui_exporter.py

@@ -53,14 +53,18 @@ def convert_row_to_geojson(row: dict[str, Any], listing_type: str = "RENT") -> d
     else:
         last_seen_str = str(last_seen_val)
 
-    # Extract first 5 photo URLs from additional_info
+    # Extract photo URLs from additional_info (prefer high-res maxSizeUrl)
     photos: list[str] = []
     additional_info = row.get('additional_info')
     if additional_info:
         if isinstance(additional_info, str):
             additional_info = json.loads(additional_info)
         images = additional_info.get('property', {}).get('images', [])
-        photos = [img['url'] for img in images[:5] if isinstance(img, dict) and 'url' in img]
+        photos = [
+            img.get('maxSizeUrl') or img['url']
+            for img in images
+            if isinstance(img, dict) and ('maxSizeUrl' in img or 'url' in img)
+        ]
     if not photos and row.get('photo_thumbnail'):
         photos = [row['photo_thumbnail']]
 
@@ -110,9 +114,13 @@ def convert_to_geojson_feature(listing: RentListing | BuyListing) -> dict[str, A
     property_info = listing.additional_info.get("property", {}) if listing.additional_info else {}
     listing_type = "RENT" if isinstance(listing, RentListing) else "BUY"
 
-    # Extract first 5 photo URLs
+    # Extract photo URLs (prefer high-res maxSizeUrl)
     images = property_info.get('images', [])
-    photos = [img['url'] for img in images[:5] if isinstance(img, dict) and 'url' in img]
+    photos = [
+        img.get('maxSizeUrl') or img['url']
+        for img in images
+        if isinstance(img, dict) and ('maxSizeUrl' in img or 'url' in img)
+    ]
     if not photos and listing.photo_thumbnail:
         photos = [listing.photo_thumbnail]