Simplify Changed Code

Invocation

When the user invokes this skill, parse optional arguments from the user text:

• --staged: inspect only staged changes.
• --ref=<ref>: diff against the given git ref. Default is HEAD.
• Any other tokens that look like file paths: restrict the review to those paths.

For every invocation, resolve scripts/simplify_scope.py relative to this SKILL.md and run it with the parsed arguments. Do not assume a particular home directory or skill installation root. Run it from the target repository root, or pass --cwd <repo> when operating on a different repository.

The helper intentionally mirrors the upstream scope behavior: