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Maurice
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The visible half of the capture-metadata work (#1614). Photos that know their coordinates are drawn as thumbnails on the Journey map, in the shape the report asked for: a picture rather than an abstract pin, and a count when several collapse into one. Clustering is a screen-space grid rather than a library. The Journey maps have never had clustering, and the one the planner uses hangs off react-leaflet while this map drives Leaflet directly; bucketing by rounded pixel position is a few lines, is deterministic, and does the job — photos of one place collapse into one thumbnail with a count, and pulling the map apart separates them again. The layer sits below the entry pins, because the itinerary is the point of the map and the photos are context. Its own effect, so photos arriving do not tear down and rebuild the map the way the entry effect does, and redrawn on zoom and pan because the buckets are in screen space. The thumbnail URL is built in the page rather than the hook: it needs the share token, which is the credential the byte proxy checks. Also re-points the trailing-migration guard at the new last slot, which is what its own comment asks of anyone appending one.