Agent Skills: lisa-parity-coderabbit

Thorough PR-style review of the full diff — bugs, security, performance, and maintainability — with concrete suggested fixes and a structured summary. An independent Lisa-native review skill that does NOT call CodeRabbit's service or port its code. Vendor-neutral cross-agent equivalent of the upstream coderabbit plugin, runnable on Codex, agy, Copilot, Cursor, and Claude.