Fix the broken Python script /app/sort trades.py so it correctly processes a CSV trade log and outputs the…

Fix the broken Python script /app/sort trades.py so it correctly processes a CSV trade log and outputs the…: a task in TermGrade Environments: 1,004 executable Linux tasks (Harbor dataset). The script reads a CSV file from /data/trades.csv (UTF-8, with header) that contains stock trades. Each row…

The task

The script reads a CSV file from `/data/trades.csv` (UTF-8, with header) that contains stock trades. Each row has: `trade_id`, `symbol`, `side` (BUY/SELL), `quantity`, `price`, `timestamp` (ISO-8601 with timezone offset, e.g., `2024-01-15T09:30:00-05:00`).

Part of ai-and/termgrade-environments.