- New `useBatchSpotCommunityScores(spots)` — ONE query for many spots (same
signals/weights as the single-spot hook; counts distinct accounts, drops the
mapper, caps per account; skip WoT/activity weighting at this scale).
- SpotCard takes an optional `community` prop and shows a small "Community"
(green) or "Seen" chip in the footer.
- MapPage scores the visible spot cards (shops excluded — different kind) and
passes each card its score.
