I’m building an Android app that directly tackles a productivity problem. The first version must focus on three core capabilities: • Task management — users can create, edit, prioritise and complete tasks. • Calendar integration — two-way sync with the device’s native calendar so every due date shows up alongside existing events. • Reminder notifications — configurable push alerts that respect system Do-Not-Disturb rules. Please craft the solution in Android Studio using clean, well-documented Kotlin or Java. Adopt Material 3 guidelines for a friction-free UI. Persist data locally (Room or DataStore are fine) but keep the architecture ready for a future remote API. Deliverables • Complete, buildable source code. • Signed APK compatible with Android 10+. • A concise README covering project setup, architecture and how to extend the data layer. Acceptance Criteria I can install the APK, add a task, see it appear in my calendar and receive the scheduled notification without crashes or ANRs.