visual-debug

# Visual Debug Automated post-implementation visual comparison — original vs implementation. **Zero vision tokens** via AE/SSIM CLI tools. **Primary trigger:** Diagnose post-implementation mismatch between a reference and an implementation, then provide concrete repair guidance. **Non-goals:** Do not use this to build or regenerate the React component, orchestrate a full live URL clone, or perform baseline/reference capture; route build/clone work to `ui-reverse-engineering` and capture/reference work to `ui-capture`. ## Boundary and handoff - **Direct invocation:** Use when reference/implementation evidence already exists and the user asks for mismatch, diff, diagnosis, comparison, or repair guidance. - **Routed invocation:** `ui-reverse-engineering` may route here after a failed visual diff, failed post-implementation gate, or completed-state mismatch request. - **Missing evidence:** If baseline/reference capture is missing, return to `ui-capture` first; if implementation or regeneration is needed, return to `ui-reverse-engineering` or the active caller pipeline. - **Return contract:** Send the caller concrete findings: failing artifact, mismatched selector/region, likely root cause, recommended fix, and verification command. `visual-debug` diagnoses and guides; the caller owns implementation, build, regeneration, and full clone orchestration. - **Worker capability:** A named diagnostic/reviewer role may be unavailable even when generic native workers work. Follow `ui-r...