Dragging on a bezier segment whilst in the path tool should mold it (as in https://pomax.github.io/bezierinfo/#molding ) as in inkscape.

More resources:

• https://math.stackexchange.com/questions/53819/changing-a-bezier-curve-by-dragging-a-point-on-the-curve-itself-rather-than-a-co
• https://stackoverflow.com/questions/2316865/drag-a-bezier-curve-to-edit-it

There are multiple ways it can behave, so we might need to experiment with what's the most pleasant.