Fix: Leaflet 'L is not defined' - Integrity-Hashes entfernt + Guard

- SRI integrity-Hashes von Leaflet CDN-Links entfernt (verursachen
  stille Blockierung wenn Hash nicht passt)
- renderMap() prueft ob L verfuegbar ist und merkt sich Locations
- retryPendingMap() rendert nachtraeglich wenn Leaflet spaeter bereit ist
- 2s Retry-Timer nach init() als Fallback

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

src/static/js/components.js

@@ -602,12 +602,26 @@ const UI = {
     _map: null,
     _mapCluster: null,
 
+    _pendingLocations: null,
+
     renderMap(locations) {
         const container = document.getElementById('map-container');
         const emptyEl = document.getElementById('map-empty');
         const statsEl = document.getElementById('map-stats');
         if (!container) return;
 
+        // Leaflet noch nicht geladen? Locations merken und spaeter rendern
+        if (typeof L === 'undefined') {
+            this._pendingLocations = locations;
+            // Statistik trotzdem anzeigen
+            if (locations && locations.length > 0) {
+                const totalArticles = locations.reduce((s, l) => s + l.article_count, 0);
+                if (statsEl) statsEl.textContent = `${locations.length} Orte / ${totalArticles} Artikel`;
+                if (emptyEl) emptyEl.style.display = 'none';
+            }
+            return;
+        }
+
         if (!locations || locations.length === 0) {
             if (emptyEl) emptyEl.style.display = 'flex';
             if (statsEl) statsEl.textContent = '';
@@ -723,6 +737,14 @@ const UI = {
         if (this._map) this._map.invalidateSize();
     },
 
+    retryPendingMap() {
+        if (this._pendingLocations && typeof L !== 'undefined') {
+            const locs = this._pendingLocations;
+            this._pendingLocations = null;
+            this.renderMap(locs);
+        }
+    },
+
     /**
      * HTML escapen.
      */