Fix phantom scrollbars: tooltips must be display:none at rest#20
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visibility:hidden boxes still occupy layout space, so every resting tip (up to 18rem wide, hanging below its host) added horizontal scrollable overflow to its scroll container - phantom left-right scrollbars in the catalog columns and content sections. - .tip is now display:none at rest: no box, no overflow, no scrollbars. Verified live: zero horizontally-overflowing elements at desktop and mobile widths, tips computed display:none. - The 400ms hover delay moves from transition-delay to an animation with a backwards fill (display:none cannot transition); keyboard focus still shows instantly. Escape-dismiss rule updated to display:none. - tip-start (catalog rows) capped to host width so a SHOWN tip cannot widen its scroll column either. 236 tests, typecheck, build green.
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Follow-up that was pushed to the #19 branch after it was merged, so it needs its own PR.
visibility: hiddenboxes still occupy layout space — every resting tooltip (up to 18rem wide, hanging below its host) added horizontal scrollable overflow to its scroll container, producing phantom left-right scrollbars in the catalog columns and content sections..tipis nowdisplay: noneat rest: no box, no overflow, no scrollbars. Verified live: zero horizontally-overflowing elements at desktop and mobile widths.transition-delayto a backwards-filled animation (display: nonecannot transition); keyboard focus still shows instantly; the Escape-dismiss rule now usesdisplay: none.tip-start(catalog rows) capped to host width so even a shown tip cannot widen its scroll column.236 tests, typecheck, build green.