- GET /api/map/chokepoints: static five-strait fly-to catalog (Hormuz, Bab
el-Mandeb, Suez, Malacca, Taiwan) with bbox/center/zoom/vesselapi. No
VesselAPI calls; only Hormuz flags vesselapi=true.
- GET /api/vessels?src=aisstream|vesselapi|all (default all) filters the
union store by provider so a Hormuz view skips ~5k CONUS AISStream rows.
- Tests: span validation of all five boxes, catalog 200 shape, src filter.
