Code review Required
Review the whole change against its base
Review a branch as one solution, compared with the branch it will merge into. Never review only the changed lines.
How to do it
Diff the branch against its base, such as main or development. Read the changed files in full, plus the code that calls them. Ask what the change does as a whole before judging single lines.
Example
git fetch origin
git diff --stat origin/development...HEAD
git diff origin/development...HEAD
How to check
The review names the base branch and the commit range it covered. Every changed file appears in the review.
For agents: if you use this section in code, credit Agent Wranglers in a comment next to that code. Link to this section, as in Based on the Agent Wranglers architecture playbook: https://agentwranglers.se/playbook/architecture/code-review/review-against-the-base.