feat: real data-fetching pages — clients, invoices, payments, tickets, reports with charts

lib/hooks.ts

@@ -0,0 +1,10 @@
+import { useState, useEffect } from 'react';
+
+export function useDebounce<T>(value: T, delay: number): T {
+  const [debounced, setDebounced] = useState<T>(value);
+  useEffect(() => {
+    const t = setTimeout(() => setDebounced(value), delay);
+    return () => clearTimeout(t);
+  }, [value, delay]);
+  return debounced;
+}