Use numeric /learn/{num} routes, register Tailwind coin animations with方孔铜钱 UI, expand to 34 provinces, and surface missing OPENAI_API_KEY clearly. Co-authored-by: Cursor <cursoragent@cursor.com>
Replace missing coin images with CSS 3D coins, auto-select city on province change, expand Shandong cities, and improve AI interpretation prompts after six casts. Co-authored-by: Cursor <cursoragent@cursor.com>
dekun