E03 — Combine shapes without losing their numbers

Field	Content
For	symbol designers
who	need composite outlines
the solution	non-destructive booleans and shape builder
is a	boolean nodes evaluated at each render
that	operands stay integer and editable
unlike	destructive path operations
our solution	nothing is flattened; the result is recomputed
Business outcomes	the six operations and the shape builder work on rounded shapes and stay editable
Leading indicators	operations accepted on reference cases
Non-functional requirements	exact on segments and arcs; robust predicates
In scope	union, difference, intersection, exclusion, division, cut path, shape builder
Out of scope	destructive flattening, corner radius on created vertices (Q9)
Closure criteria	each operation demonstrated on rounded operands edited afterwards

Candidate features

Operations on edges: cut the contour between two points, join two points, delete an edge, add a connection drawn over the shape; then rebuild shapes from the pieces, with the intersections of this epic.