Implement a command-line tool /app/querylog that parses a custom log file and answers structured queries…

Implement a command-line tool /app/querylog that parses a custom log file and answers structured queries…: a task in TermGrade Environments: 1,004 executable Linux tasks (Harbor dataset). Log file format: - One record per line, fields separated by the pipe character - Fields in order: timestamp…

The task

**Log file format:** - One record per line, fields separated by the pipe character `|` - Fields in order: `timestamp|level|user_id|message|tags` - `timestamp`: ISO-8601 with mandatory seconds, in UTC, format `YYYY-MM-DDTHH:MM:SSZ` (the literal letter Z, never `+00:00`). Timestamps are strictly increasing within a…

Part of ai-and/termgrade-environments.