Impact Check — Code Change Impact Analysis

Repo profile — read .claude/repo-profile.md first. This skill is repo-agnostic; arc is the reference implementation. The monorepo layout, package naming, and paths below (packages/, providers/, runtimes/, blocklets/) are arc's — map them to the consuming repo's structure via the profile.

Analyze code changes and find related areas in the codebase that may also need modification.

Input Modes

Parse $ARGUMENTS to determine the diff mode: