Show task creation date in modal footer 📅 #614

Show task creation date in modal footer 📅

File: client/src/components/Task/TaskModal.jsx

No idea when a task was created 💀
Opening modal shows zero date info fr!!

Fix: add to modal footer:
{task?.createdAt && (

Created {new Date(task.createdAt)
.toLocaleDateString('en-US', {
month: 'short',
day: 'numeric',
year: 'numeric'
})}

)}

~6 lines! createdAt exists in MongoDB ✅
No backend needed 🎯