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Implement a CLI tool at /app/pipeline that reads a CSV file and produces a sorted, aggregated TSV report.

Implement a CLI tool at /app/pipeline that reads a CSV file and produces a sorted, aggregated TSV report.: a task in TermGrade Environments: 1,004 executable Linux tasks (Harbor dataset). Input : CSV file path as the only argument. The CSV has these columns (order may vary): - timestamp : ISO-8601…

The task

**Input**: CSV file path as the only argument. The CSV has these columns (order may vary): - `timestamp`: ISO-8601 datetime strings - `user_id`: integer - `event`: string - `value`: decimal number

Part of ai-and/termgrade-environments.