lint

name	lint
description	Check and fix code formatting using ESLint and Prettier

Check and fix code formatting using ESLint and Prettier.

Read AGENTS.md first. It is the canonical project guide for this repository.

Steps:

1. Run npm run format:check to see if there are formatting violations
2. If violations are found, run npm run format to auto-fix them
3. Run npm run lint to see if there are linting errors
4. If errors are found, run npm run lint:fix to auto-fix them
5. After applying, run git diff --stat to show what files were reformatted
6. Summarize the changes (which files, what kind of formatting was fixed)

If no violations are found, say so and stop.

Do NOT commit the formatting changes — just apply and report.