What problem does it solve? Code changes often ship with hidden defects, regressions, or insufficient test coverage because full QA reviews are too heavy for everyday diffs. This Skill provides a focused, high-signal review workflow that surfaces correctness, security, and maintainability risks quickly. ## Core Features & Use Cases - Severity-Ranked Findings: Reports issues in strict severity order (critical, high, medium, low) with higher-confidence findings listed first. - Structured Review Workflow: Defines scope, identifies behavior changes and invariants, checks edge cases and failure paths, and evaluates test sufficiency. - Standardized Output Format: Uses a shared review reporting format with compact areas like Correctness, Security, Maintainability, and Test Coverage. - Use Case: A developer opens a pull request and asks for a focused review; the Skill scans the diff, flags a missing null check as high severity, and notes that the new error-handling path lacks test coverage. ## Quick Start Ask the assistant to use lightweight-review to review this diff for correctness risks and missing tests.