Karte: Leaflet-Attribution vollstaendig entfernen

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

backend/static/js/pages/poison.js

@@ -60,7 +60,12 @@ window.Page_poison = (() => {
 
       <div id="poison-map"
            style="height:280px;border-radius:var(--radius-md);overflow:hidden;
-                  margin-bottom:var(--space-4);background:var(--c-surface-2)">
+                  background:var(--c-surface-2)">
+      </div>
+      <div style="font-size:10px;color:var(--c-text-secondary);
+                  text-align:right;margin-bottom:var(--space-4);
+                  padding:2px var(--space-2) 0">
+        © OpenStreetMap-Mitwirkende
       </div>
 
       <p id="poison-info"
@@ -120,11 +125,6 @@ window.Page_poison = (() => {
     L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
       maxZoom: 19,
     }).addTo(_map);
-
-    // OSM-Pflichtangabe ohne externe Links
-    L.control.attribution({ prefix: false })
-      .addAttribution('© OpenStreetMap-Mitwirkende')
-      .addTo(_map);
   }
 
   // ----------------------------------------------------------