Load subscriptions and monitors on mount to populate tab counts immediately

Previously, tab counts for subscriptions and monitors were not displayed until the user clicked those tabs. This fix loads both data sets during onMount so the counts appear immediately on page load.

Author: willuhmjs

src/routes/+page.svelte

@@ -162,6 +162,8 @@
 		loadProfiles();
 		loadCompletedDownloads();
 		loadCacheUsage();
+		loadSubscriptions();
+		loadMonitors();
 
 		const unsubComplete = onSSEEvent('download:complete', ({ download }) => {
 			const exists = completedDownloads.find((d) => d.id === download.id);