Selecting a place no longer spiderfies a city-sized cluster: the reveal
only fans open bubbles of up to 12 stops, or stacks whose stops all share
one coordinate, so a zoomed-out trip with hundreds of places stays usable
(#2990).
The selected pin now carries a white border inside a pulsing blue ring on
both renderers (static under reduced motion), and the map measures the
place card instead of assuming a fixed 320px, so the selection pans the
pin above even a tall card on portrait tablets and eases it back out when
the card grows over it later (#2991).
Closes#2990Closes#2991
Maurice
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