Seitenkarten destroy(): GL-Karte beim Seitenwechsel freigeben (WebGL-Kontext-Leak)

poison/lost/walks/events: destroy() ruft _map.remove() → app.js gibt den WebGL-Kontext beim
Navigieren frei. Sonst akkumulieren Kontexte → iOS-Limit (~8) → neue GL-Karten (z.B. Routen-Detail)
scheitern → Leaflet-Raster-Fallback.

backend/static/js/pages/events.js

@@ -669,6 +669,8 @@ window.Page_events = (() => {
   // Notiz-Modal (Custom DOM — kein UI.modal um Konflikte zu vermeiden)
   // ----------------------------------------------------------
 
-  return { init, refresh, openNew, _openDetail: _showDetail };
+  function _destroy() { try { _map && _map.remove(); } catch (e) {} _map = null; _clusterGroup = null; _markers = []; }
+
+  return { init, refresh, openNew, _openDetail: _showDetail, destroy: _destroy };
 
 })();

backend/static/js/pages/lost.js

@@ -807,6 +807,8 @@ function _emptyState(icon, title, text, cta = '') {
   // ----------------------------------------------------------
   // PUBLIC
   // ----------------------------------------------------------
-  return { init, refresh, openNew };
+  function _destroy() { try { _map && _map.remove(); } catch (e) {} _map = null; _markers = []; _userMarker = null; }
+
+  return { init, refresh, openNew, destroy: _destroy };
 
 })();

backend/static/js/pages/poison.js

@@ -654,6 +654,9 @@ window.Page_poison = (() => {
   // ----------------------------------------------------------
   // PUBLIC
   // ----------------------------------------------------------
-  return { init, refresh, openNew, openDetail: _openDetail };
+  // GL-Karte beim Seitenwechsel freigeben (sonst leakt der WebGL-Kontext → iOS-Limit).
+  function _destroy() { try { _map && _map.remove(); } catch (e) {} _map = null; _markers = []; _userMarker = null; }
+
+  return { init, refresh, openNew, openDetail: _openDetail, destroy: _destroy };
 
 })();

backend/static/js/pages/walks.js

@@ -1396,6 +1396,8 @@ window.Page_walks = (() => {
   }
 
 
-  return { init, refresh, onDogChange, openNew, openDetail: _openDetail };
+  function _destroy() { try { _map && _map.remove(); } catch (e) {} _map = null; _markers = []; }
+
+  return { init, refresh, onDogChange, openNew, openDetail: _openDetail, destroy: _destroy };
 
 })();