Version 9.8.0

Flashcard fixes and improvements:
- Fixed a bug where the review session could freeze after rating a card "Got it"
- Words now graduate the way they should: 3 correct first-try days (within your last 5 review days) moves a word to your browser. Three clean days in a row is the fastest path.
- After a correct answer, cards now come back the next day instead of disappearing for several days — so building your streak actually works
- The deck cap is now consistent at 5 cards everywhere

New:
- Adjust how many new cards you get per day (1–10) right from the popup, with an honest estimate of your pace to 3,000 words

Under the hood:
- More reliable daily word unlocks — a failed unlock now retries instead of skipping the day
- Better performance on pages with dynamic content
- Removed legacy files for a smaller, cleaner extension