[plain-thinh-tran]

Fixes PE-1694

Adds a short Code Review section to README.md that explains when Greptile auto-approves a PR in this repo.

Why

This PR documents the auto-approve policy next to the rest of the contributor docs, so people know which PRs can merge without a human. It is also the smoke test for that policy: it only touches README.md, so Greptile should approve it on its own after a 5/5 Low risk review.

🤖 Generated with Claude Code

[cursor]

PR Summary

Low Risk
Documentation-only change to README with no runtime or security impact.

Overview
Adds a Code review section to README.md that documents when Greptile can auto-approve PRs: 5/5 score and Low risk.

It also states exceptions—changes under .greptile/ and release Version Packages bot PRs still require a human reviewer because Greptile skips bot-opened PRs.

^{Reviewed by Cursor Bugbot for commit f7dc6a7. Bugbot is set up for automated code reviews on this repo. Configure here.}

[greptile-apps]

Confidence Score: 5/5

[Low impact] This documentation-only PR appears safe to merge.

_{Reviews (1) · Last reviewed commit: "Docs(PE-1694): describe Greptile auto-ap..." · Reviewed by Greptile}