[SUBMISSION] AI PR Reviewer Guard

### Title
AI PR Reviewer Guard

### Description
AI PR Reviewer Guard is a GitHub Action and CLI that scores risky AI-assisted pull requests before maintainers review them. It checks diff metadata for signals such as dependency changes, workflow edits, sensitive files, possible secrets, dangerous code patterns, large PRs, and missing tests, then posts a PR comment with a clear risk level.

### URL
https://github.com/P-r-e-m-i-u-m/ai-pr-reviewer-guard

### Category
Continuous Code Review

### Submission Guidelines
- [x] The resource is related to AI-powered automation for software collaboration
- [x] The resource is publicly accessible
- [x] I have checked that this resource is not already listed in the repository