Reading Tracker Pro: Book Log

New features - Weekly reading goal : set a weekly goal alongside daily, monthly, and yearly, with its own celebration screen. - Per-goal metric : each goal (daily, weekly, monthly, yearly) can track time, books, or pages, chosen independently. - Turn any goal on/off : toggle goals in Settings; disabled goals leave the home card, which disappears entirely when all are off. - Customizable Reading Habits chart : show or hide individual metrics (e.g. hide "hours listened" if you skip audiobooks). - Time on the Monthly Reading Volume chart : switch the second metric between pages and time. - Redesigned Purchase Stats : split into three cards: Overview (totals, most/least expensive, averages, spend by period & format), Trends (12-month books-bought vs money-spent), and Locations (pie chart + per-store totals). - Challenge start dates : challenges now take a start date plus a deadline and count only reading between the two. - Delete old challenges : permanently remove abandoned/archived challenges (with confirmation), not just archive them. - Sort library by length : by page count, or listening time for audiobooks; auto-applied when you pick the Pages filter or Audiobook format. - Date pickers for book dates : purchase, due, and publication dates use a real date picker (defaults to today) on Add & Edit Book. - TBR check before online search : when searching online to add a book, warns if it's already on your To Be Read list and shows its cover so you can confirm and skip the search. Improvements - Lock Screen daily-goal widget now shows progress in your goal's unit (time, books, or pages) instead of always time. - New books default to your device language when added. Bug fixes - Swiping the Currently Reading carousel no longer opens a book by mistake. - Hours-based reading challenges no longer get stuck at 0%. - Smoother home screen, no full re-read of your library/session history when returning to the Home tab. - Publication date no longer breaks on books saved with an old free-text date (e.g. "1998").