grew

Adds a new system directory to the grew configuration so it is created during grew setup.

Scaffold a new grew subcommand end-to-end. Use when the user asks to add, create, or scaffold a new CLI command. Reads existing commands for style reference, creates cmd/<name>/ with Command + doc.go, registers in root.go, and updates cmd/README.md.

Add a new diagnostic check to grew doctor. Use when the user wants to add a health check, diagnostic, or validation to the `grew doctor` command. Follows the registration-via-init() pattern so the core flow is never edited directly.

Run a security audit on the current branch's changes. Use when the user asks to audit, security-review, or check for vulnerabilities in pending changes. Spawns the security-auditor agent against the diff.

Run grew's test suite at the appropriate level. Use when the user asks to run tests, check if tests pass, or verify a change didn't break anything. Accepts an optional level argument (unit, integration, smoke, e2e, all) and an optional package path.