Task: Convert Excel to CSV with UTF-8 Encoding

Task: Convert Excel to CSV with UTF-8 Encoding: a task in Terminal-Lego-15k (Harbor dataset). Convert an Excel (.xlsx) file containing non-ASCII characters — including Spanish characters (tildes, accented vowels), smart quotes (left/right curly quotes), and long dashes (em dashes) — into a CSV…

The task

Convert an Excel (.xlsx) file containing non-ASCII characters — including Spanish characters (tildes, accented vowels), smart quotes (left/right curly quotes), and long dashes (em dashes) — into a CSV file with proper **UTF-8 encoding**, ensuring all special characters are preserved intact.

Part of PrimeIntellect/Terminal-Lego-15k.