2.6 — canvas drag snapping. A shared useNodeDrag hook snaps a dragged
node's near/center/far edges to nearby nodes (and the grid as a fallback)
and draws live alignment guides; a magnet toggle in the canvas toolbar
turns it on/off. Pure computeSnap helper, unit-tested.
2.7 — richer link cards. Show the site's own favicon (client-side, no
proxy; graceful link-glyph fallback) plus a domain line, in both the
grid card and the inspector.
2.8 — drag a library/gallery image onto the board. The grid gains a
drop listener mirroring the canvas's; both consume one event dispatched
by dispatchGalleryMoodboardDrop, which each app wires to gallery-modal's
onImageDrop. Bounds-checked against the mounted board surface.
Tanish Manku
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