Street view (Mapillary)
Crowdsourced street-level photo coverage as a togglable overlay + an immersive viewer. OFF by default; toggle it on and tap a coverage dot (or, zoomed in, tap near coverage) to open the immersive image and walk the sequence. Meaningful photo dots appear from z14; below that the sequence lines + overview dots show where coverage exists. Token is a PUBLIC browser read token, read from env only.
