portolan-pipeline
Eight small Collections, each with its own AGENTS.md worth reading before querying it. Two attribute joins connect them. The Eurostat electricity prices table joins Natural Earth countries on ISO_A2_EH after remapping Eurostat's EL to GR and UK to GB. Natural Earth populated places join Natural Earth countries on ADM0_A3 after remapping SSD to SDS for South Sudan. Everything else connects only spatially, and the boundary layers differ hugely in scale, from 1:110m world polygons to Boston parcels, so match scales before spatial joins.