I have an Android-only Flutter app that already handles data locally but still lacks a reliable way to sync it with our back-end. I now need two complementary options built into the current workflow: • a visible button that lets the user push data on demand • an automatic background routine that does the same job without user involvement Once this dual push logic is in place I’d also like the existing flow polished—mainly smoother UI reactions on low-end devices and a bit more zip in general performance. No new features beyond that; I simply want what’s there to feel faster and look cleaner. I’ll grant you access to the Git repository and a staging API key so you can test end-to-end. Code must stay in Flutter/Dart, follow my existing folder structure, and pass the current unit tests. Acceptance criteria – Manual push button visible on the main dashboard, triggers the existing sync endpoint and shows a success/fail toast. – Automatic push runs on app open and every X minutes while online, with safe fallback when offline. – Frame drops below 16 ms on the oldest target device (Moto G7) for key screens. – UI glitches in the settings and summary pages resolved. Send over a brief plan on how you’d wire the manual and automatic actions, plus any performance tools (e.g. Flutter DevTools, Dart Observatory) you prefer. I’m ready to merge improvements right away.