Tutor Note: Lesson Planner

Improved the global experience. - English UI is now shown when the device language is not Korean. - KRW and USD display currency can be selected in Settings. - Calendar, notifications, lesson records, and schedule text now use localized wording. - App name and permission messages have been localized.

Calendar and settlement improvements Added session-order context and settlement hints. Improved calendar UI and hardened session-order backfill handling. Fixed month/date state drift on load failure and stale-request rollback issues during month changes. Testing and quality Added Maestro E2E test flows and run scripts. Added test coverage for session-order backfill utilities. Removed hardcoded Maestro binary fallback paths in test scripts. Expanded Maestro E2E test case documentation.

1. New Features Onboarding Redesign Replaced the complex overlay-based onboarding with a new, full-page onboarding flow for a more intuitive user experience. Settings & Feedback Added a Settings page to the app. Implemented an email-based feedback feature that allows users to contact the developer directly. Enhanced Student Management Added the ability to input the current session count when registering a student, making it easier to continue managing existing classes. Improved schedule creation by allowing multiple schedules to be created at once. Added an automatic class end-time setting for improved convenience. 2. UI/UX Improvements Calendar View Unified the design of cancel/restore buttons on class cards to improve visual consistency and clarity. Highlighted the current date with a background color for easier identification. Removed swipe gestures from tab navigation to prevent accidental interactions. Records Tab Fixed an issue where the keyboard did not appear correctly. Added scrolling support to improve usability when entering and viewing records. 3. Refactoring & Structural Improvements Component Architecture Refactored large files by separating calendar components and student detail screens into smaller, manageable units. Extracted business logic into custom hooks (e.g., useStudentDetail) to improve maintainability. Moved styling code into separate files to enhance readability. Stability & Performance Restructured the file system to resolve Expo Router warnings. Fixed database locking issues on Android. Resolved potential race conditions during database operations and external resource cleanup to ensure data integrity. 4. Bug Fixes Scheduling & Billing Improved logic for handling past schedules when editing classes and syncing calendar/notification updates. Fixed an issue where the initial session count was omitted from tuition calculations. Resolved progress display errors. Fixed a Z-index issue with the iOS DatePicker. Validation Strengthened input validation and error handling when creating schedules and students.