I need push-notification support added to my existing Flutter app so users receive immediate alerts on both iOS and Android. These alerts must trigger sound, vibration, and a visual banner or badge every time they arrive, ensuring they can’t be missed. The work includes configuring the messaging service (FCM on Android and APNs on iOS), wiring it to my Flutter codebase, and exposing a simple API in Dart so I can fire notifications from my backend without extra client changes. All required keys, certificates, and server endpoints are already in place; you’ll just plug everything together, register the device tokens, and show the alerts exactly the same on both platforms. Deliverables: • Updated Flutter project with alert-type push notifications fully working on physical devices and simulators • Clear setup notes or a short README so I can reproduce any certificates or provisioning steps • A quick demo video (or screen recording) proving sound, vibration, and visual cues trigger correctly on iOS and Android I’ll test by sending a sample alert from my backend and confirming the three cues appear consistently. Once that passes, the job is complete.