ast-grep

Before any other work in the first session, run python3 scripts/check_environment.py from the skill directory and show its output: it prints one OK/FAIL line per external tool from references/requirements.json (ast-grep) with the copy-ready install command for every failure. It installs nothing and makes no network call; never install a tool automatically, print the command for the user.

Before asking the user, apply references/question-guidelines.md.

Follow references/workflow.md. Apply references/language-policy.md for user-facing prose. Preserve exact code, commands, paths, IDs, JSON fields, and quotations.