What problem does it solve? Presenter tests can be fully green while the real UI still has layout bugs — clipped elements, overflowing text, invisible controls — that only appear when the app actually runs. This Skill mechanizes the manual run-the-app render proof so visual defects are caught and documented instead of taken on trust. ## Core Features & Use Cases - Real App Launch: Starts the side's application using the active profile's run binding, and refuses to fake the proof when no run command exists. - Render Checklist Walkthrough: Applies realize-ui's five-point checklist (sizing, overflow, contrast/visibility, state rendering, recomposition) to each UI block's screens. - Recorded Evidence: Writes screenshots or dated observation notes per checklist item into <output_dir>/features/<feature>/render-proof/<block-id>/, producing the proof the verifier's step 8 requires for a manual ui_render_check. - Use Case: At D1 of a UI block, run the app, walk the block's screens, and record a RENDER-OK verdict with evidence — or a RENDER-FAIL with named findings routed back to the worker for rework. ## Quick Start Run the app for this feature and record the render proof for all UI blocks before I confirm the release.