Rarely set fields move into one optional boxed NodeExtras, and large NodeKind payloads (images,
live shapes, blends, envelopes) are boxed. Every object, and every undo step that copies it,
shrinks: a 50k-path move keeps ~24.5 MB per step instead of ~40 MB. Files stay byte-identical
(Node keeps its flat JSON through a borrowed Serialize and a from-wire Deserialize, no flatten),
and loading is slightly faster. Undo and redo reuse their step's size estimate instead of
walking the document again (8.3 -> 5.6 ms for a 50k-path move).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmMmc1J8XeNLxhRihWv9cc
# Conflicts:
# crates/engine/src/cmd/graph.rs
# crates/svg/src/export.rs
Blend Options is a dedicated dialog (Spacing dropdown with its value,
Align to Page / Align to Path buttons, live preview) opened on the
selected blend's own options, so OK no longer turns Smooth Color into
5 steps; with nothing selected it sets what new blends start with
(object.blend.info reads them). The Blend tool blends from clicked
anchor points (blend spec `starts`), adds keys to an existing blend
instead of nesting it, opens Blend Options on double-click, Alt-click
and its toolbar button, and has its own cursors and hint.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
arhammusheer