“the editor literally doesn’t even show the navmesh surface printed.”
Look at the upper left corner when you are previewing navmesh. It will say which recastnavmesh it is showing to you. Notice you have two different recast meshes in Outliner. If you want to present that second navmesh you need to switch between them but i don’t remember how. Do try setting CharMoveComp radius though even if it is not showing in editor.