ISLAND MASS FAMILIES (user directive): islands stop being one body in different paint

'Islands are mostly just one type with a color phenotype plus decor' —
now the island BODY itself is a vocabulary:
- MASS_FAMILIES in islands.ts: 'cliff' (nature voxels, full shaping
  vocabulary — untouched code path) vs 'block' families (Platformer Kit
  voxels, measured: clean 1.0 full / 0.5 low courses, bottom-center,
  cosmetic 0.082 lip overhang, INTEGRATED tops — no cap tile).
- BiomeSpec.massFamily: winter is BUILT OF SNOW now (block-snow body,
  tinted-cliff phenotype retired); new 'grove' biome (block-grass body,
  forest decor). Ten biomes total.
- proxies blockHeight knows platformer courses (1x1 boxes per course,
  lip is cosmetic); islandRender treats block masses as occluders with
  value-jitter-only coloring (pre-textured tops must not be hue-tinted).
- Platformer Kit imported + joined DECOR_PACKS / GOLDEN_PACKS / test
  manifests.
- MEASURED RULINGS on the record: Space Kit terrain_* is a SURFACE kit
  (flat top + 0.5 skirts, hollow underside, off-origin authoring) —
  wrong for void islands seen from below, deferred again; block corner
  rim-rounding awaits a mesh-orientation measure.
- Corpus: grove+winter block islands emerge across biome scan; 21.9k
  block voxels / 30 seeds. 205 green, endless goldens re-pinned,
  genVersion unchanged.

commit

416d6ab4e8c96bec8d9705859ff7da66797301dd

parent

3b979a648b28c0ad022a69e44977f0d0fb89898e

author

Dami <dami.etoile@gmail.com>