You are given a Python script /app/merger.py that is supposed to read multiple CSV files from a directory…

You are given a Python script /app/merger.py that is supposed to read multiple CSV files from a directory…: a task in TermGrade Environments: 1,004 executable Linux tasks (Harbor dataset). Goal : Fix ALL bugs in /app/merger.py so that it correctly implements the contract below. The script is…

The task

**Goal**: Fix ALL bugs in `/app/merger.py` so that it correctly implements the contract below. The script is already executable; you may run it to observe behavior, but the test will invoke it fresh each time.

Part of ai-and/termgrade-environments.