feat(map): fetch all schools for map view, add reference pin, cap radius at 5mi

- Remove 10-mile radius option; cap backend radius max at 5 miles
- Raise backend page_size max to 500 so map can fetch all schools in one call
- HomeView: when map view is active, fetch all schools within radius
  (page_size=500) instead of showing only the paginated first page;
  falls back to initial SSR schools while loading
- SchoolMap/LeafletMapInner: accept referencePoint prop and render a
  distinctive coral circle pin at the search postcode location

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

nextjs-app/components/FilterBar.tsx

@@ -145,7 +145,6 @@ export function FilterBar({ filters, isHero, resultFilters }: FilterBarProps) {
                   <option value="1">1 mile</option>
                   <option value="3">3 miles</option>
                   <option value="5">5 miles</option>
-                  <option value="10">10 miles</option>
                 </select>
               </div>
             )}

nextjs-app/components/HomeView.tsx

@@ -35,6 +35,8 @@ export function HomeView({ initialSchools, filters, totalSchools }: HomeViewProp
   const [hasMore, setHasMore] = useState(initialSchools.total_pages > 1);
   const [isLoadingMore, setIsLoadingMore] = useState(false);
   const [laAverages, setLaAverages] = useState<Record<string, number>>({});
+  const [mapSchools, setMapSchools] = useState<School[]>([]);
+  const [isLoadingMap, setIsLoadingMap] = useState(false);
   const prevSearchParamsRef = useRef(searchParams.toString());
 
   const hasSearch = searchParams.get('search') || searchParams.get('postcode');
@@ -52,6 +54,7 @@ export function HomeView({ initialSchools, filters, totalSchools }: HomeViewProp
       setAllSchools(initialSchools.schools);
       setCurrentPage(initialSchools.page);
       setHasMore(initialSchools.total_pages > 1);
+      setMapSchools([]);
     }
   }, [searchParams, initialSchools]);
 
@@ -60,6 +63,20 @@ export function HomeView({ initialSchools, filters, totalSchools }: HomeViewProp
     setSelectedMapSchool(null);
   }, [resultsView, searchParams]);
 
+  // Fetch all schools within radius when map view is active
+  useEffect(() => {
+    if (resultsView !== 'map' || !isLocationSearch) return;
+    setIsLoadingMap(true);
+    const params: Record<string, any> = {};
+    searchParams.forEach((value, key) => { params[key] = value; });
+    params.page = 1;
+    params.page_size = 500;
+    fetchSchools(params, { cache: 'no-store' })
+      .then(r => setMapSchools(r.schools))
+      .catch(() => setMapSchools(initialSchools.schools))
+      .finally(() => setIsLoadingMap(false));
+  }, [resultsView, searchParams]);
+
   // Fetch LA averages when secondary schools are visible
   useEffect(() => {
     if (!isSecondaryView) return;
@@ -214,13 +231,14 @@ export function HomeView({ initialSchools, filters, totalSchools }: HomeViewProp
           <div className={styles.mapViewContainer}>
             <div className={styles.mapContainer}>
               <SchoolMap
-                schools={initialSchools.schools}
+                schools={isLoadingMap ? initialSchools.schools : mapSchools}
                 center={initialSchools.location_info?.coordinates}
+                referencePoint={initialSchools.location_info?.coordinates}
                 onMarkerClick={setSelectedMapSchool}
               />
             </div>
             <div className={styles.compactList}>
-              {initialSchools.schools.map((school) => (
+              {(isLoadingMap ? initialSchools.schools : mapSchools).map((school) => (
                 <div
                   key={school.urn}
                   className={`${styles.listItemWrapper} ${selectedMapSchool?.urn === school.urn ? styles.highlightedItem : ''}`}

nextjs-app/components/LeafletMapInner.tsx

@@ -23,12 +23,14 @@ interface LeafletMapInnerProps {
   schools: School[];
   center: [number, number];
   zoom: number;
+  referencePoint?: [number, number];
   onMarkerClick?: (school: School) => void;
 }
 
-export default function LeafletMapInner({ schools, center, zoom, onMarkerClick }: LeafletMapInnerProps) {
+export default function LeafletMapInner({ schools, center, zoom, referencePoint, onMarkerClick }: LeafletMapInnerProps) {
   const mapRef = useRef<L.Map | null>(null);
   const mapContainerRef = useRef<HTMLDivElement>(null);
+  const refMarkerRef = useRef<L.Marker | null>(null);
 
   useEffect(() => {
     if (!mapContainerRef.current) return;
@@ -43,13 +45,36 @@ export default function LeafletMapInner({ schools, center, zoom, onMarkerClick }
       }).addTo(mapRef.current);
     }
 
-    // Clear existing markers
+    // Clear existing school markers (not the reference pin)
     mapRef.current.eachLayer((layer) => {
-      if (layer instanceof L.Marker) {
+      if (layer instanceof L.Marker && layer !== refMarkerRef.current) {
         mapRef.current!.removeLayer(layer);
       }
     });
 
+    // Add reference pin (search location)
+    if (refMarkerRef.current) {
+      refMarkerRef.current.remove();
+      refMarkerRef.current = null;
+    }
+    if (referencePoint && mapRef.current) {
+      const refIcon = L.divIcon({
+        html: `<div style="
+          width: 20px; height: 20px;
+          background: #e07256;
+          border: 3px solid white;
+          border-radius: 50%;
+          box-shadow: 0 2px 8px rgba(0,0,0,0.35);
+        "></div>`,
+        iconSize: [20, 20],
+        iconAnchor: [10, 10],
+        className: '',
+      });
+      refMarkerRef.current = L.marker(referencePoint, { icon: refIcon, zIndexOffset: 1000 })
+        .addTo(mapRef.current)
+        .bindPopup('<strong>Search location</strong>');
+    }
+
     // Add markers for schools
     schools.forEach((school) => {
       if (school.latitude && school.longitude && mapRef.current) {
@@ -89,7 +114,7 @@ export default function LeafletMapInner({ schools, center, zoom, onMarkerClick }
     return () => {
       // Don't destroy map on every update, just clean markers
     };
-  }, [schools, center, zoom, onMarkerClick]);
+  }, [schools, center, zoom, referencePoint, onMarkerClick]);
 
   // Cleanup map on unmount
   useEffect(() => {

nextjs-app/components/SchoolMap.tsx

@@ -24,10 +24,11 @@ interface SchoolMapProps {
   schools: School[];
   center?: [number, number];
   zoom?: number;
+  referencePoint?: [number, number];
   onMarkerClick?: (school: School) => void;
 }
 
-export function SchoolMap({ schools, center, zoom = 13, onMarkerClick }: SchoolMapProps) {
+export function SchoolMap({ schools, center, zoom = 13, referencePoint, onMarkerClick }: SchoolMapProps) {
   // Calculate center if not provided
   const mapCenter: [number, number] = center || (() => {
     if (schools.length === 0) return [51.5074, -0.1278]; // Default to London
@@ -50,6 +51,7 @@ export function SchoolMap({ schools, center, zoom = 13, onMarkerClick }: SchoolM
         schools={schools}
         center={mapCenter}
         zoom={zoom}
+        referencePoint={referencePoint}
         onMarkerClick={onMarkerClick}
       />
     </div>