feat: display custom marker icons on parent map

API now returns iconUrl and iconSize for each marker, allowing custom
marker icons defined in marker.yml to be displayed on the map-editor
field of the parent map page.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

public/site/plugins/map-editor/api/routes.php

@@ -55,6 +55,15 @@ return [
                 // Format markers for response
                 $markers = [];
                 foreach ($markerPages as $marker) {
+                    // Get custom icon if available
+                    $iconFile = $marker->markerIcon()->toFile();
+                    $iconUrl = $iconFile ? $iconFile->url() : null;
+
+                    // Get icon size if set
+                    $iconSize = $marker->markerIconSize()->isNotEmpty()
+                        ? (int) $marker->markerIconSize()->value()
+                        : 40;
+
                     $markers[] = [
                         'id' => $marker->id(),
                         'slug' => $marker->slug(),
@@ -64,7 +73,9 @@ return [
                             'lon' => (float) $marker->longitude()->value()
                         ],
                         'num' => $marker->num(),
-                        'panelUrl' => (string) $marker->panel()->url()
+                        'panelUrl' => (string) $marker->panel()->url(),
+                        'iconUrl' => $iconUrl,
+                        'iconSize' => $iconSize
                     ];
                 }
 
@@ -173,6 +184,13 @@ return [
                 // Publish the page as listed with the correct num
                 $newMarker->changeStatus('listed', $nextNum);
 
+                // Get custom icon if available (new markers won't have one initially)
+                $iconFile = $newMarker->markerIcon()->toFile();
+                $iconUrl = $iconFile ? $iconFile->url() : null;
+                $iconSize = $newMarker->markerIconSize()->isNotEmpty()
+                    ? (int) $newMarker->markerIconSize()->value()
+                    : 40;
+
                 return [
                     'status' => 'success',
                     'data' => [
@@ -185,7 +203,9 @@ return [
                                 'lon' => $lon
                             ],
                             'num' => $nextNum,
-                            'panelUrl' => (string) $newMarker->panel()->url()
+                            'panelUrl' => (string) $newMarker->panel()->url(),
+                            'iconUrl' => $iconUrl,
+                            'iconSize' => $iconSize
                         ]
                     ]
                 ];
@@ -268,6 +288,13 @@ return [
                     'longitude' => $lon
                 ]);
 
+                // Get custom icon if available
+                $iconFile = $marker->markerIcon()->toFile();
+                $iconUrl = $iconFile ? $iconFile->url() : null;
+                $iconSize = $marker->markerIconSize()->isNotEmpty()
+                    ? (int) $marker->markerIconSize()->value()
+                    : 40;
+
                 return [
                     'status' => 'success',
                     'data' => [
@@ -280,7 +307,9 @@ return [
                                 'lon' => $lon
                             ],
                             'num' => $marker->num(),
-                            'panelUrl' => '/panel/pages/' . $marker->id()
+                            'panelUrl' => '/panel/pages/' . $marker->id(),
+                            'iconUrl' => $iconUrl,
+                            'iconSize' => $iconSize
                         ]
                     ]
                 ];