Preview scenes now take paint from the promoted document but GEOMETRY
from the unpromoted layout tree via the design canvas's exact layout
pass — honoring preserve_authored_geometry for Figma imports — so
preview positions match design mode by construction (was: full taffy
re-solve, elements shifted 100+ px on preserve docs, 2 px per promoted
hug widget). Hit-testing maps taps through the deepest painted node's
scene/runtime rect pair with a per-gesture anchor (pointer capture),
so drags never remap through neighbours mid-gesture. Input dispatch
split to preview/input.rs for the 800-line cap.
Pairs with the following device-frame commit (preview/mod.rs already
declares the present module it introduces).
Plan 3 of the web embedding SDK: @zseven-w/op-web-sdk-react and -vue — thin
read-only framework adapters over the TS core. Each: <DesignView> (canvas +
viewer lifecycle), provider/inject of OpViewer, and read-only
useDocument/useViewport/useActivePage. React via useSyncExternalStore
(cache-invalidate-on-event); Vue via an async shallowRef provider so children
inject the viewer after load. Self-contained (no pen-* deps; framework peer);
React 5/5 + Vue 4/4 tests; both tsc clean.
