修复数据统计错误的问题

public/js/app.js

@@ -2070,6 +2070,18 @@
         const savedTheme = localStorage.getItem('theme');
         const themeToApply = savedTheme || settings.default_theme || 'dark';
         applyTheme(themeToApply);
+        
+        // Apply settings to UI (logo, name, etc.)
+        applySiteSettings(window.SITE_SETTINGS);
+
+        // Refresh overview and historical charts to reflect new source selections
+        fetchNetworkHistory(true);
+        // We can't force the WS broadcast easily from client, 
+        // but we can fetch the overview via REST API once to update UI
+        fetch('/api/metrics/overview?force=true')
+          .then(res => res.json())
+          .then(data => updateDashboard(data))
+          .catch(() => {});
       } else {
         const err = await response.json();
         showSiteMessage(`保存失败: ${err.error || '未知错误'}`, 'error');