What problem does it solve? Reviewing Unity MVVM GUI code (Panel.lua, View.cs, prefab bindings, config tables) requires both subjective quality judgment and deterministic machine checks, and doing them in one pass risks bias and missed compile errors. This Skill runs both lanes in parallel and merges results into a single verdict. ## Core Features & Use Cases - Parallel two-lane review: A fresh gui-reviewer subagent (Bias Guard, no prior context) judges taste dimensions while the orchestrator runs mechanical Type-A gates (C# compile, Lua syntax, prefab binding, generated-file export, config sync). - Merged CRITICAL gate with 6-state verdict: Produces GUI_REVIEW.md, GUI_VERDICT.json (PASS/WARN/FAIL/NOT_APPLICABLE/BLOCKED/ERROR), and a HUMAN_REVIEW.md checklist without blocking the pipeline. - Use Case: After generating a BagPanel with a new batch-sell button, run this Skill to verify the C# compiles, Lua passes LSP diagnostics, prefab bindings match, and an independent reviewer flags MVVM or lifecycle issues before acceptance. ## Quick Start Ask the AI to review the generated GUI code for a panel using the gui-review verification gate and produce the verdict JSON and human review checklist.