What problem does it solve? Manual code review is slow and error-prone, and subtle bugs like removed guards, broken callers, or violated project conventions often slip through. This Skill runs a structured multi-angle review over your changes so real defects surface before they ship. ## Core Features & Use Cases - Multi-angle bug hunting: Runs eight independent finder angles covering line-by-line diff scans, removed-behavior auditing, cross-file caller tracing, reuse, simplification, efficiency, fix depth, and project convention checks. - Flexible review targets: Reviews staged changes, working-tree changes, commit ranges, branches, file paths, or hosted GitHub/GitLab/Gitee PR/MR URLs with read-only resolution. - Verified findings with optional fixes: Each candidate is verified as CONFIRMED, PLAUSIBLE, or REFUTED, producing a ranked report of at most 10 findings, with --fix to apply fixes directly to the working tree. - Use Case: Before merging a feature branch, run the review against your PR URL to catch a dropped error path and a violated rule from your repo's AGENTS.md, then apply the fixes automatically. ## Quick Start Ask the agent to review the current branch changes or a pull request URL, for example by invoking /at-review with a PR link or with --fix to also apply the suggested fixes.