Employee dropdown list all staff from attendance + leave + accident

frontend/src/pages/holidays/Holidays.jsx

@@ -284,7 +284,13 @@ function LeavesTab() {
     URL.revokeObjectURL(url)
   }
 
-  const uniqueEmps = [...new Set(leaves.map(l => l.employee_name))].sort()
+  // Fetch employee list from /api/employees/list (UNION of attendance + leave + accident)
+  const [employees, setEmployees] = useState([])
+  useEffect(() => {
+    api.get('/api/employees/list')
+      .then(({ data }) => setEmployees(data.employees || []))
+      .catch(() => setEmployees([]))
+  }, [])
 
   return (
     <div className="space-y-4">