diff --git a/backend/main.py b/backend/main.py
index 75bb3b3..077c42c 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -429,6 +429,12 @@ async def maplibre_test():
# Spike-Testseite: MapLibre rendert /tiles/*.pmtiles (Geometrie-Style, kein Glyph).
return FileResponse(os.path.join(STATIC_DIR, "maplibre-test.html"), media_type="text/html")
+
+@app.get("/leaflet-vector-test")
+async def leaflet_vector_test():
+ # Isolationstest: protomaps-leaflet + map-vector.js + DACH-PMTiles, ohne App-Shell/Flag.
+ return FileResponse(os.path.join(STATIC_DIR, "leaflet-vector-test.html"), media_type="text/html")
+
# User-generierte Medien (Fotos aus Tagebuch, Giftköder-Alarm, etc.)
MEDIA_DIR = os.getenv("MEDIA_DIR", "/data/media")
os.makedirs(MEDIA_DIR, exist_ok=True)
diff --git a/backend/static/js/leaflet-vector-test.js b/backend/static/js/leaflet-vector-test.js
new file mode 100644
index 0000000..30d1a2a
--- /dev/null
+++ b/backend/static/js/leaflet-vector-test.js
@@ -0,0 +1,24 @@
+// Isolationstest: rendert die DACH-PMTiles direkt via protomaps-leaflet + map-vector.js,
+// OHNE App-Shell, ohne Feature-Flag, ohne SW-Komplikationen. Beweist, ob die
+// Vektor-Basemap-Kette an sich funktioniert.
+(function () {
+ 'use strict';
+ var st = document.getElementById('status');
+ function set(t) { if (st) st.textContent = t; }
+ try {
+ if (!window.L) return set('❌ Leaflet nicht geladen');
+ if (!window.protomapsL) return set('❌ protomaps-leaflet nicht geladen');
+ if (!window.MapVector) return set('❌ MapVector nicht geladen');
+
+ var map = L.map('map', { attributionControl: false }).setView([48.137, 11.576], 12); // München
+ L.control.attribution({ prefix: false }).addTo(map)
+ .addAttribution('© OpenStreetMap contributors');
+
+ var layer = MapVector.basemapLayer({ dark: false });
+ layer.addTo(map);
+ set('✅ Vektor-Layer hinzugefügt — Tiles: ' + MapVector.tilesUrl());
+ } catch (e) {
+ set('❌ Fehler: ' + (e && e.message ? e.message : e));
+ console.error('Isolationstest-Fehler:', e);
+ }
+})();
diff --git a/backend/static/leaflet-vector-test.html b/backend/static/leaflet-vector-test.html
new file mode 100644
index 0000000..ab95607
--- /dev/null
+++ b/backend/static/leaflet-vector-test.html
@@ -0,0 +1,23 @@
+
+
+
+
+
+ Ban Yaro — Leaflet-Vektor-Isolationstest
+
+
+
+
+
+ Isolationstest
protomaps-leaflet + DACH-PMTiles
init…
+
+
+
+
+
+