XLSX Skill

Use this skill for .xlsx, .xlsm, .csv, and .tsv work that ends in an Excel workbook.

OfficeCLI routing and consent rule:

• First check whether officecli is available with command -v officecli.
• If installed, recommend OfficeCLI first for high-fidelity XLSX mutations, inspection, validation, batch/resident flows, CJK/rhwp-aware work, and Office-compatible output.
• If missing, do not auto-install. Present choices before proceeding:
  1. Install forked OfficeCLI from https://github.com/lidge-jun/OfficeCLI via bash "$(npm root -g)/cli-jaw/scripts/install-officecli.sh".
  2. Continue with lightweight fallback tools for the current task, with limitations stated.
  3. Stop or cancel.
• Before taking a lightweight fallback path, ask the user again and state what fidelity/features may be lost.
• If the user chooses lightweight mode, save that preference to memory for future Office work.
• Use upstream/vanilla iOfficeAI/OfficeCLI only when the user explicitly asks for upstream behavior.

OfficeCLI is the recommended advanced backend for workbook mutation and inspection. Primary data pipeline: pandas for DataFrame transforms, joins, aggregations. Lightweight fallback: Python OOXML scripts (scripts/*.py) and openpyxl for tasks OfficeCLI/pandas cannot cover, or when the user chooses lightweight mode: formula recalc, raw OOXML inspection, complex openpyxl styling. See §3.