- render/interp.js isCosmeticEvent: an fx with a form is state, never dropped as stale nor shed from a full queue; a late one switches the model without its telegraph, its closing clip shortened (render/app.js) - battle/runner.js: a backlog past HELD_MAX keeps only the last status / skill toggle per unit; a battle that ended while the tab was hidden delivers its backlog and last snapshot when the tab is shown - screens/game.js: a new field meta for the field on screen buffers its frames until the view re-enters it - browser test stalls the main thread (blocking 1 s long tasks); Node tests drive the runner into the render buffer