Can we edit water schematisations in the browser?

We ran a spike to find out whether we could build a usable schematisation editor inside Rana — in the browser, without QGIS. The answer is a qualified yes, with meaningful caveats. A schematisation in 3Di is the model of a water network: channels, weirs, culverts, pumps, their geometry, and all the hydraulic parameters attached to each object. Today, editing a schematisation means opening QGIS,…