feat: Implement Cronitor health monitor

src/hooks/useCronitorHealth.ts

@@ -0,0 +1,37 @@
+import { useQuery } from '@tanstack/react-query';
+
+const CRONITOR_API_URL = 'https://cronitor.io/api/monitors/88kG4W?env=production&format=json';
+const POLL_INTERVAL = 60000; // 60 seconds
+
+interface CronitorResponse {
+  passing: boolean;
+  [key: string]: any; // Other fields we don't need
+}
+
+/**
+ * Hook to poll Cronitor API for health status
+ * Returns the monitor's passing status (true = healthy, false = down)
+ */
+export function useCronitorHealth() {
+  return useQuery({
+    queryKey: ['cronitor-health'],
+    queryFn: async (): Promise<CronitorResponse> => {
+      const response = await fetch(CRONITOR_API_URL, {
+        method: 'GET',
+        headers: {
+          'Accept': 'application/json',
+        },
+      });
+      
+      if (!response.ok) {
+        throw new Error(`Cronitor API error: ${response.status}`);
+      }
+      
+      return response.json();
+    },
+    refetchInterval: POLL_INTERVAL, // Auto-poll every 60 seconds
+    retry: 2, // Retry failed requests twice
+    staleTime: 30000, // Consider data stale after 30 seconds
+    gcTime: 5 * 60 * 1000, // Keep in cache for 5 minutes
+  });
+}