//! Makepad UI tests are NOT written yet (OCR-T2): the widget in `src/app.rs`
//! is still an unwired layout. This file intentionally contains no
//! placeholder assertions — a green run here proves nothing about the UI.
//! Planned cases (to run under `makepad-test` + Xvfb like nigig-traffic):
//! drop PNG adds a row; bad drop shows refusal; rotate/overlay; language
//! dropdown lists installed languages; Do OCR shows progress then text;
//! Copy/Save report real outcomes.