Akiba So 4c8cc73106 feat(f7): infinite-board model (便利贴 cards) + derived 双链 backlinks ...

Board + BoardCard: positioned sticky-note cards in board coordinates, immutable
copy-on-write edits (add/removeById/moveCard/setText, unique ids), cardsIn()
broad-phase culling, and linkGraph()/backlinksOf() that derive the 双链 graph
from the cards' [[links]] — making link_graph load-bearing. Cards also host ink
via a StrokeHost keyed by card id (same host-agnostic engine as PDF pages).

Pure model; fully unit-tested (CRUD, immutability, culling, backlinks).

flutter analyze lib/editor clean; 215/215 tests (+7).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-23 03:38:12 +08:00

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