The Task 4 test had East's and West's moves swapped relative to the
PLAYER_BOARDS mapping (E plays NE/SE, W plays NW/SW). Caught and fixed in
the shipped code during execution; this brings the plan document in line.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
14-task TDD plan: project scaffold, the seven-module engine (vitest-covered),
and five Svelte components. Covers every section of the design spec.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>