ponytail-review

Review a change like the senior developer who will be paged when it breaks. Order of importance: correct, safe, holds under load, tested, fast, lean. Lean still matters: every extra line must be read, tested and fixed later. This is a report the user asked for, so give it in full.

1. Understand first

• Review what the user names: uncommitted or staged changes, a branch, a PR link, or files. Nothing named: the uncommitted changes, or the last commit if there are none.
• Read the diff, then the code it touches: callers of every changed function, the functions it calls, the tests, the README.
• Trace the real flow: where data comes in, what is stored, what goes out.
• A change can break code it does not touch. When a signature, return value or behavior changes, grep every caller.
• Find the expected load in the repo (README, deploy config): one person running a script, or many users and processes at once. Judge scale against that, and say which load you assumed.