A script using `duplicate` failed with "unsupported command 'duplicate'"
because the clone logic was still inline in the tui command. Extract it to
core/app/edit.hpp::duplicate_module(System*, src, dst) -> {ok, error, parts,
signals}: a deep clone of a module (parts, pins with spec + nc_origin, signals
with type overrides, pin→signal wiring; no connections), refusing on an unknown
source or an already-taken destination name.
- the tui `duplicate` command renders the result (output unchanged);
- the script engine dispatches `duplicate` to it — the failing script now runs;
- the wx GUI gains Edit ▸ Duplicate module… (PickModule + a name prompt).
tests/test_edit.cpp: deep clone wires to the clone's own signal (not the
source's) and preserves the type; unknown source / existing destination
refused. 412 core assertions green; tui + wx build clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
François
c2b1f4c4ae