Generate Playwright test files from plain English scenario descriptions in test/scenarios/
Use when investigating terminal rendering desync between tmux and xterm.js in schmux's web dashboard — viewport showing wrong content, scrollback jumping, frozen display, content not matching tmux, screen-diff showing row mismatches, or users reporting the terminal "jumping around" or "scrolling back"
Write a scenario test for a feature you just implemented. Examines the current diff to understand what changed, writes a plain English scenario, then generates the Playwright test.