Map controls: prayer-walk-planner (under fullscreen), gospel-internet (the map and the language
tree, the board's default view), country-posters (the country map, its entry profile) and
all-people-groups get the library HelpButton with hosted. Own bars, where there is no control
column: the Wall (after the Bless/Social toggle), the PPLR hub (the end of its view bar) and the
vision card (its top corner, at the end of the reading direction so Arabic mirrors it) use
useHostedHelp. The vision card's label is the library's own "About this map" in each of the
eleven locales, copied into vision.json rather than translated again. UPG Neighbor is left as it
is: its bar already has an About button that opens the full explainer.
Each "?" stays hidden until a host marks its pane, so nothing changes until the app answers.
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