$npx -y skills add openai/codex --skill code-review-change-sizeChange size guidance (800 lines)
| 1 | Unless the change is mechanical the total number of changed lines should not exceed 800 lines. |
| 2 | For complex logic changes the size should be under 500 lines. |
| 3 | |
| 4 | If the change is larger, explain whether it can be split into reviewable stages and identify the smallest coherent stage to land first. |
| 5 | Base the staging suggestion on the actual diff, dependencies, and affected call sites. |