Backlog Tracker

A beautifully crafted Material Design 3 tracker for managing anything that piles up: study backlogs, work queues, games, habits, routines, or fully custom pending lists. It works offline, stores data locally, and helps you track manual progress or scheduled backlog growth.

Features:
- Track study, work, games, habits, and custom lists
- One-time task mode and count-based backlog mode
- Optional per-day and repeat-day auto-growth schedules
- Light and dark themes
- Local offline data storage
- Import/export JSON backups and shareable templates

feat: improve mobile UX, onboarding, presets, and Android launch flow

- add native branded Android splash and adaptive launcher icon
- add reliable Android back navigation with double-back exit on home
- launch the interactive help
- improve custom presets, import guidance, and backup overwrite warnings
- simplify color selection with expanded preset palettes
- improve mobile layouts, borders, and completion target alignment
- fix date, import validation, ETA, and simulated-time c