codebase-impact

name	codebase-impact
description	Use before multi-file, unfamiliar, public-contract, or shared-behavior code changes to build a bounded impact set without reading the whole repository or editing from a single file view.

Codebase Impact Adapter

Use map -> slice -> expand -> impact set -> delta review.

Map

Use fast search, file lists, project rules, symbols, routes, and related tests. Avoid full-repo reads and generated/vendor files.

Slice

Read likely edit files, same-pattern implementations, related tests, and relevant config. Start small, usually 3-8 files.

Expand

Expand only when contracts, callers, tests, security/data boundaries, or project rules require it.

Output

• Files likely to edit
• Callers/consumers
• Tests/checks
• Config/docs
• Risks/unknowns
• Stop condition