diff --git a/index.html b/index.html
index 474310c..ea68c6f 100644
--- a/index.html
+++ b/index.html
@@ -1720,8 +1720,8 @@
                         middleMarkers: true,
                         pane: 'trassenPane',
                         lineOptions: { color: '#cca300', weight: 6 },
-                        vertexOptions: { color: '#cca300', radius: 5 },
-                        middleMarkerOptions: { color: '#cca300', opacity: 0.5, radius: 3 }
+                        vertexOptions: { color: '#cca300', radius: 6 },
+                        middleMarkerOptions: { color: '#cca300', opacity: 0.6, radius: 4 }
                     });
                     drillingLayers[v.id] = L.featureGroup({ interactive: false, pane: 'drillingPane' });
                     labelLayers[v.id] = L.featureGroup({ interactive: false, pane: 'labelPane' });
@@ -1732,8 +1732,29 @@
                         labelLayers[v.id].addTo(map);
                     }
 
-                    // Allow vertex insertion by clicking the polyline itself
-                    routeLayers[v.id].on('click', handleVertexInsertion);
+                    // Allow vertex insertion by clicking anywhere on the polyline
+                    routeLayers[v.id].on('click', (e) => {
+                        if (!v.active) return;
+                        if (!map.editTools) return;
+                        
+                        // Prevent the default map click from bubbling
+                        L.DomEvent.stopPropagation(e);
+                        
+                        const layer = routeLayers[v.id];
+                        // Find the closest segment and insert a point
+                        const point = map.mouseEventToLatLng(e.originalEvent);
+                        const vertexIndex = findClosestSegmentIndex(layer.getLatLngs(), point);
+                        
+                        if (vertexIndex !== -1) {
+                            const latlngs = layer.getLatLngs();
+                            latlngs.splice(vertexIndex + 1, 0, point);
+                            layer.setLatLngs(latlngs);
+                            layer.editor.refresh(); // Tell the Leaflet.Editable editor to update markers
+                            
+                            // Trigger all the sync events manually
+                            map.fire('editable:vertex:inserted', { layer: layer });
+                        }
+                    });
                 }
 
                 const layer = routeLayers[v.id];
@@ -1892,13 +1913,27 @@
             calculateStats(activeV);
             updateVariantStatsUI(activeV);
             updateVariantStatsUI(activeV);
-            if (e.type.includes('end') || e.type === 'editable:created' || e.type.includes('dragend')) {
+            if (e.type.includes('end') || e.type === 'editable:created' || e.type.includes('dragend') || e.type === 'editable:vertex:inserted') {
                 renderVariants();
                 const _activeV = state.variants.find(v => v.active); 
                 if (_activeV) saveVariantToDB(_activeV);
             }
         });
 
+        // Helper to find the best spot to insert a new vertex
+        function findClosestSegmentIndex(latlngs, point) {
+            let minDistance = Infinity;
+            let index = -1;
+            for (let i = 0; i < latlngs.length - 1; i++) {
+                const distance = L.LineUtil.closestPointOnSegment(map.latLngToLayerPoint(point), map.latLngToLayerPoint(latlngs[i]), map.latLngToLayerPoint(latlngs[i+1])).distanceTo(map.latLngToLayerPoint(point));
+                if (distance < minDistance) {
+                    minDistance = distance;
+                    index = i;
+                }
+            }
+            return index;
+        }
+
         function getFlattenedCoords(raw) {
             if (!raw) return [];
             // If it's a flat array of LatLngs already
@@ -2787,7 +2822,11 @@
                         if (slot && f.geometry && f.geometry.coordinates) {
                             slot.id = f.id || p.id || slot.id;
                             slot.routes = f.geometry.coordinates.map(c => ({ lat: c[1], lng: c[0] }));
-                            console.log(`[V3-Sync] ${slot.name} erfolgreich gemappt.`);
+                            
+                            // Re-sync the polyline layer if it exists
+                            if (routeLayers[slot.id]) {
+                                routeLayers[slot.id].setLatLngs(slot.routes);
+                            }
                         }
                     });
 
@@ -2825,6 +2864,7 @@
                         if (Math.abs(firstCoord) > 1000) gj = transformGeoJSON(gj, "EPSG:25832", "EPSG:4326");
                     }
                     state.usage = gj;
+                    cachedObstacles = null; // IMPORTANT: Reset cache to trigger new calculation
                     updateUsageLayer();
                 }
             } catch (e) { console.error("[V3-Sync] Usage Error:", e); }
diff --git a/server.js b/server.js
index 9aa76df..4e7dc84 100644
--- a/server.js
+++ b/server.js
@@ -187,7 +187,7 @@ app.get('/api/variants', async (req, res) => {
     await setSchema(client);
     const query = `
       SELECT 
-        id, name, "Variante",
+        COALESCE(id, fid) AS id, name, "Variante",
         ST_AsGeoJSON(ST_Transform(geom, 4326)) as geometry
       FROM kabeltrasse
       ORDER BY id DESC
@@ -227,22 +227,21 @@ app.post('/api/variants', async (req, res) => {
     const varianteValue = properties.Variante || (properties.name ? properties.name.replace('Variante ', '') : 'A');
     const geoJsonStr = JSON.stringify(geometry);
 
-    const upsertQuery = `
+    // Delete existing variant if it exists (Manual UPSERT to bypass missing index permissions)
+    await client.query('DELETE FROM kabeltrasse WHERE "Variante" = $1 OR name = $2', [varianteValue, routeName]);
+
+    const insertQuery = `
       INSERT INTO kabeltrasse (geom, name, "Variante")
       VALUES (
         ST_MakeValid(ST_Transform(ST_GeomFromGeoJSON($1), 25832)), 
         $2, 
         $3
       )
-      ON CONFLICT ("Variante") 
-      DO UPDATE SET 
-        geom = EXCLUDED.geom,
-        name = EXCLUDED.name
       RETURNING id
     `;
     
-    const upsertRes = await client.query(upsertQuery, [geoJsonStr, routeName, varianteValue]);
-    res.json({ success: true, id: upsertRes.rows[0].id });
+    const insertRes = await client.query(insertQuery, [geoJsonStr, routeName, varianteValue]);
+    res.json({ success: true, id: insertRes.rows[0].id });
   } catch (err) {
     console.error("SQL-FEHLER (SAVE):", err.message);
     res.status(500).json({ error: 'Failed to save variant' });