Two reported mobile bugs (DRV1650 #3 and #4), both settled by rega's
measurements at 390x844 on dx-life /research rather than by reading source.
★ #3 — THERE WAS NO BACK-TO-TOP AT ALL, and I had reported otherwise. I said
VerticalTabsLayout already rendered one targeting the active .vtl-host. rega:
ZERO .vtl-host elements in the live build, button.btt ABSENT from the DOM. The
chain: VTL renders .vtl-host only for `mountedElementRows`, which filters rows
carrying an `element` key — and this SPA passes :groups whose rows carry none,
mounting its own .dms-pane panes imperatively. So activeHostEl is null, and the
layout's button correctly renders nothing. That button is for layouts hosting
their own element rows; it is inert for the composition the gallery uses. I had
read the source and not the configuration.
The SPA now renders its own, bound to the ACTIVE .dms-pane — the scroller rega
measured (clientHeight 712, scrollHeight 12,373, overflow-y:auto) while the
document does not scroll at all. The gallery owns both the circle and the
scroller, so no shadow-root walking is needed. Placement reads --map-fab-beside,
published by the layout only while its circle renders, so the arrow sits BESIDE
the circle and falls back to the plain inset where there is none.
BackToTopButton already refuses to appear when its target does not scroll.
The label goes in all ELEVEN of the SPA's locales. Its translate() falls back to
the KEY, so a missing entry would have rendered the literal string "backToTop"
to every reader — en/ar/zh/ru/hi verified, and the Arabic and Chinese strings
are present in the built bundle.
★ #4 — THE REGIONS ATTRIBUTION SITS UNDER THE CIRCLE, and the geometry was not
what I assumed. rega: at 390 the attribution is details.maplibregl-ctrl-attrib in
the BOTTOM-RIGHT container, expanded to 347x44 at (22,791) — nearly the full map
width — so its LEFT END runs under the 44px fab at (12,788), 1,394 px² overlap.
The bottom-left container is EMPTY (0x0), so a bottom-left-only fix would have
changed nothing.
Both bottom containers are lifted off the published --map-fab-clearance under a
767px query, so a standalone leaf or a <doxa-country-map> with no gallery around
it reads the 0px fallback and nothing moves. The existing z-index:3 cannot help:
the circle lives in the layout, outside this shadow root, so the two are
different stacking contexts. Attribution is a LICENCE TERM of the basemap, which
is why this is a fix and not a polish item.
REBASED ONTO 0428f279c BY REPLAYING SOURCE, not by resolving a conflict: the
rebase collided only in generated bundles, where a conflict is never resolvable
by hand. Three files applied clean; RegionCountryMap.vue had MOVED to
library/components/maps in that same round (my own country-map work), so its rule
was re-applied at the new path by hand — a straight patch would have failed with
"No such file or directory", which is exactly what studio would have hit.
country-map, regions-dashboard and doxa-maps-spa rebuilt; both fixes verified in
the shipped minified bundles, including the new country-map bundle that now
inherits the lift.
NOT PROVEN HERE: the headless DOM proof needs a browser (rega's seat). What I
verified is that the button, its scoped CSS and its ar/zh labels are in the
SHIPPED doxa-maps-spa.js, and the fab lift in both map bundles.
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