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Miguel Angel Simon Sierra
ba0d6406d2
Two latent defects in the announcement path this branch adds. - lanesId was keyed by render row alone, so a second TimelineLanes on the page (a mini-timeline beside the main one) would mint the same timeline-lanes-track-0 and every caret's aria-controls would resolve to whichever instance mounted first. The prefix now comes from useId, with the colons stripped so the id stays a legal CSS selector. - trackDisplayNumber returned trackOrder.length + 1 for a key it could not find, which is indistinguishable from a real row: the label announced a row the user can see is wrong and nothing upstream could tell it had guessed. It returns null now, and trackDisplaySuffix drops the number from the label rather than inventing one.