fix: eliminate map tile-seam lines, fix scroll, remove Expert Analysis

- fill-antialias: false + buffer: 512 on GeoJSON source to kill tile
  boundary artifacts
- cooperativeGestures replaces scrollZoom: false (page scrolls normally,
  Ctrl+scroll to zoom map)
- Remove "Expert Analysis" bullet from homepage in all 3 languages

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

layouts/shortcodes/world-map.html

@@ -80,22 +80,13 @@ function ifkInitMap() {
     zoom: 2,
     minZoom: 1,
     maxZoom: 6,
-    scrollZoom: false,
+    cooperativeGestures: true,
     attributionControl: false
   });
 
   window._ifkMap.addControl(new maplibregl.NavigationControl({ showCompass: false }), 'top-right');
   window._ifkMap.addControl(new maplibregl.FullscreenControl(), 'top-right');
 
-  // Enable scroll zoom in fullscreen
-  document.addEventListener('fullscreenchange', function() {
-    if (document.fullscreenElement) {
-      window._ifkMap.scrollZoom.enable();
-    } else {
-      window._ifkMap.scrollZoom.disable();
-    }
-  });
-
   window._ifkMap.on('load', function() {
     fetch('{{ "data/countries-50m.json" | relURL }}')
       .then(function(r) { return r.json(); })
@@ -109,7 +100,12 @@ function ifkInitMap() {
           f.properties.isoNum = id;
         });
 
-        window._ifkMap.addSource('countries-choropleth', { type: 'geojson', data: geo });
+        window._ifkMap.addSource('countries-choropleth', {
+          type: 'geojson',
+          data: geo,
+          buffer: 512,
+          tolerance: 0
+        });
 
         window._ifkMap.addLayer({
           id: 'choropleth-fill',
@@ -117,7 +113,8 @@ function ifkInitMap() {
           source: 'countries-choropleth',
           paint: {
             'fill-color': ['get', 'fillColor'],
-            'fill-opacity': 1
+            'fill-opacity': 1,
+            'fill-antialias': false
           }
         });