world.ts already carries Libby's 7.0 (CultLib PR #1 990521b3); the comment now
states the 6.63 sup was measured, not proved.
creatures.ts follows creature-projection-v2: a neutral creature publishes no
sizeBucket, and one that arrives is ignored. creatureScale returns null (draw
nothing) for neutral, absent or unknown buckets; it never defaults to medium.
NEUTRAL_SCALE is removed.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>