I already have the full Android source code; what I now need is a reliable build that focuses on seamless data synchronization. The application must install and run smoothly on both phones and tablets, retaining the existing UI while guaranteeing that every record created or edited offline is synced accurately the moment a connection is available. Your task is to review the current codebase, optimise (or rewrite, if required) the sync logic, compile the APK, and provide a clean, reproducible build process so future releases are effortless. Retrofit and Room are already included—feel free to keep them or suggest more efficient libraries as long as the final result remains lightweight and dependable. Please share past work that proves you have tackled similar sync-centric projects. A short note explaining how you would approach conflict resolution and background syncing will help me understand your workflow. Deliverables • Signed, install-ready APK for phones and tablets • Updated and well-commented source code in a Git repo (or ZIP) • One-page setup/build guide so the project can be rebuilt without surprises Acceptance criteria: the APK installs on Android 8.0+ devices, completes full two-way sync on first run, and performs incremental background sync within 30 seconds of connectivity being restored, all without crashes or data loss.