修复线路不显示的问题

public/js/app.js

@@ -320,6 +320,7 @@
     // setInterval(fetchMetrics, REFRESH_INTERVAL); - Now using WebSockets
     initWebSocket();
     setInterval(fetchNetworkHistory, NETWORK_HISTORY_INTERVAL);
+    fetchLatency();
     setInterval(fetchLatency, REFRESH_INTERVAL);
   }
 
@@ -335,6 +336,7 @@
         if (msg.type === 'overview') {
           allServersData = msg.data.servers || [];
           updateDashboard(msg.data);
+          updateMap2D(allServersData);
         }
       } catch (err) {
         console.error('WS Message Error:', err);
@@ -689,26 +691,38 @@
                 data: lineData
             };
             
-            // Add or update line series
-            const options = myMap2D.getOption();
-            const series = options.series;
-            
-            // Filter out existing latency lines to update
-            const newSeries = series.filter(s => s.type !== 'lines' || !s.latencyLine);
-            lineSeries.latencyLine = true;
-            newSeries.push(lineSeries);
-            
-            myMap2D.setOption({ series: newSeries });
+            window.latencySeries = lineSeries;
+        } else {
+            window.latencySeries = null;
         }
+    } else {
+        window.latencySeries = null;
+    }
+
+    // Combine all series
+    const finalSeries = [
+        {
+            type: 'scatter',
+            coordinateSystem: 'geo',
+            geoIndex: 0,
+            symbolSize: 6,
+            itemStyle: {
+                color: '#06b6d4',
+                shadowBlur: 3,
+                shadowColor: 'rgba(6, 182, 212, 0.5)'
+            },
+            data: geoData,
+            zlevel: 1
+        }
+    ];
+
+    if (window.latencySeries) {
+        finalSeries.push(window.latencySeries);
     }
 
     myMap2D.setOption({
-        series: [{
-            coordinateSystem: 'geo',
-            geoIndex: 0,
-            data: geoData
-        }]
-    }, { replaceMerge: ['series'] });
+        series: finalSeries
+    });
 
     // Update footer stats
     if (dom.globeTotalNodes) dom.globeTotalNodes.textContent = geoData.length;