Get Pending Celebrations

Get won leads that haven't been celebrated yet for the authenticated technician.

Used to trigger celebration animations in the mobile app.

Returns: { "won_leads": [ { "id": "uuid", "customer_name": "John Doe", "won_amount": 5000.00, "moved_from_followups_at": "2025-10-08T12:00:00Z" } ], "count": 2 }