csv-handler

Read, write, transform, and analyze CSV/TSV files with automatic encoding detection (including Japanese encodings like Shift_JIS, CP932, EUC-JP), delimiter detection, and data manipulation. Use when the task involves (1) reading or inspecting CSV/TSV files, (2) creating new CSV/TSV files from data, (3) transforming or filtering existing CSV data, (4) converting between CSV formats or encodings, (5) handling Japanese-encoded CSV files, or (6) any mention of .csv or .tsv files that need processing. Also trigger for data export tasks where the output format is CSV/TSV.