feat: add custom marker icons with configurable size

- Add markerIcon files field to marker.yml for custom JPG/PNG/SVG icons
- Add markerIconSize range field (20-500px, default 40px) with unit display
- Layout icon fields side-by-side (50/50 width) in marker blueprint
- Add markerIconUrl prop in index.php to auto-detect uploaded icon
- Add markerIconSize prop in index.php to read size from page data
- Update MapPreview.vue to display custom images instead of default pins
- Set icon dimensions dynamically based on markerIconSize value
- Icon size updates on save/reload (reactive implementation deferred)
- Remove custom tiles background functionality (not needed)

Note: Custom icons show uploaded image, may have white background on
transparent PNGs depending on image processing. Size is non-reactive
and requires save + reload to update in preview.

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

public/site/plugins/map-editor/index.php

@@ -28,6 +28,23 @@ Kirby::plugin('geoproject/map-editor', [
                 },
                 'longitude' => function ($longitude = null) {
                     return $longitude;
+                },
+                'markerIconUrl' => function ($markerIconUrl = null) {
+                    // Auto-detect marker icon from page files
+                    if ($markerIconUrl === null && $this->model()) {
+                        $iconFile = $this->model()->markerIcon()->toFile();
+                        if ($iconFile) {
+                            return $iconFile->url();
+                        }
+                    }
+                    return $markerIconUrl;
+                },
+                'markerIconSize' => function ($markerIconSize = 40) {
+                    // Auto-detect marker icon size from page
+                    if ($this->model() && $this->model()->markerIconSize()->isNotEmpty()) {
+                        return (int) $this->model()->markerIconSize()->value();
+                    }
+                    return $markerIconSize;
                 }
             ]
         ]

public/site/plugins/map-editor/src/components/field/MapEditor.vue

@@ -79,6 +79,14 @@ export default {
       type: [Number, String],
       default: null,
     },
+    markerIconUrl: {
+      type: String,
+      default: null,
+    },
+    markerIconSize: {
+      type: Number,
+      default: 40,
+    },
   },
 
   setup(props, { emit }) {
@@ -138,6 +146,8 @@ export default {
             id: 'single-marker',
             position: { lat, lon },
             title: 'Current position',
+            iconUrl: props.markerIconUrl,
+            iconSize: props.markerIconSize,
           }];
         }
         return [];

public/site/plugins/map-editor/src/components/map/MapPreview.vue

@@ -181,19 +181,39 @@ export default {
       const el = document.createElement("div");
       el.className = "custom-marker";
 
-      // Create inner wrapper for visual transforms (isolates from MapLibre transforms)
-      const inner = document.createElement("div");
-      inner.className = "marker-inner";
-      if (props.selectedMarkerId === markerData.id) {
-        inner.classList.add("selected");
-      }
+      // Check if custom icon is provided
+      if (markerData.iconUrl) {
+        // Use custom image
+        el.classList.add("custom-icon");
+        const img = document.createElement("img");
+        img.src = markerData.iconUrl;
+        img.className = "marker-icon-image";
 
-      // Add marker number
-      const numberEl = document.createElement("div");
-      numberEl.className = "marker-number";
-      numberEl.textContent = index + 1;
-      inner.appendChild(numberEl);
-      el.appendChild(inner);
+        // Set size from marker data or default to 40px
+        const size = markerData.iconSize || 40;
+        img.style.width = `${size}px`;
+        img.style.height = `${size}px`;
+
+        if (props.selectedMarkerId === markerData.id) {
+          img.classList.add("selected");
+        }
+        el.appendChild(img);
+      } else {
+        // Use default pin marker
+        // Create inner wrapper for visual transforms (isolates from MapLibre transforms)
+        const inner = document.createElement("div");
+        inner.className = "marker-inner";
+        if (props.selectedMarkerId === markerData.id) {
+          inner.classList.add("selected");
+        }
+
+        // Add marker number
+        const numberEl = document.createElement("div");
+        numberEl.className = "marker-number";
+        numberEl.textContent = index + 1;
+        inner.appendChild(numberEl);
+        el.appendChild(inner);
+      }
 
       try {
         const coords = [markerData.position.lon, markerData.position.lat];
@@ -252,6 +272,7 @@ export default {
     function updateMarkerSelection(selectedId) {
       markerElements.value.forEach(({ element }, markerId) => {
         if (element) {
+          // Handle default pin marker
           const inner = element.querySelector('.marker-inner');
           if (inner) {
             if (markerId === selectedId) {
@@ -260,6 +281,16 @@ export default {
               inner.classList.remove("selected");
             }
           }
+
+          // Handle custom icon marker
+          const img = element.querySelector('.marker-icon-image');
+          if (img) {
+            if (markerId === selectedId) {
+              img.classList.add("selected");
+            } else {
+              img.classList.remove("selected");
+            }
+          }
         }
       });
     }
@@ -399,6 +430,30 @@ export default {
   pointer-events: none;
 }
 
+/* Custom icon marker */
+.custom-marker.custom-icon {
+  cursor: grab;
+}
+
+.custom-marker.custom-icon:active {
+  cursor: grabbing;
+}
+
+.marker-icon-image {
+  object-fit: contain;
+  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
+  transition: all 0.2s;
+}
+
+.marker-icon-image:hover {
+  transform: scale(1.1);
+  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.4));
+}
+
+.marker-icon-image.selected {
+  filter: drop-shadow(0 4px 12px rgba(52, 152, 219, 0.8));
+}
+
 /* MapLibre controls styling */
 .maplibregl-ctrl-group {
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);