Function schedulePreload

src/components/UsageDashboard.tsx:184–190

(callback: () => void)

    
    // Use requestIdleCallback if available, otherwise setTimeout
    const schedulePreload = (callback: () => void) => {
      if ('requestIdleCallback' in window) {
        requestIdleCallback(callback, { timeout: 2000 });
      } else {
        setTimeout(callback, 100);
      }
    };
    
    // Preload adjacent tabs
    schedulePreload(() => {