PR Craft

Size is a review-quality control

Defect detection falls off sharply above roughly 400 changed lines. Reviewers do not read a 2,000-line diff more slowly — they read it less carefully, and then approve it. The budget exists to protect review quality, not tidiness.

Measure the budget excluding lockfiles, generated files, vendored paths, and pure-move renames. A 3,000-line diff that is 2,900 lines of regenerated protobuf is a 100-line PR.

Title

type(scope): imperative description, subject ≤ 72 characters.

feat fix docs style refactor perf test chore ci build revert