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docs(decisions): add D-246 micro-habitat mosaic + D-247 native biospheres (amend D-228)

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D-246 (architecture): intra-class micro-habitat mosaic — a voxel_mosaic()
sub-chunk noise band modulates the D-228 axes into spatially-coherent,
relief-conditioned micro-habitats; palette keyed on surface-class ×
climate-biome × biosphere-register; five new D-228 axis values front-loaded
for determinism; within-patch believability metric in scope. Governs T-1084.

D-247 (content): habitable Reach worlds were alive before humans — the
settlement timeline forbids terraforming from dead rock. An authored per-world
chirality bit gates whether native life is edible (Compatible) or
inedible-but-inert (Mirror); "safe" and "edible" are decoupled; colonization
is ecological war that grows an Earth-crop footprint outward from settlements.
Grounds D-246's native-vs-introduced register.

D-228 amended: +Vegetation{Meadow,Deadfall,Lichen}, +TerrainMaterial{Hardpan,Scree}.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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jpmschweitzer
2026-07-02 22:29:23 +02:00
co-authored by Claude Opus 4.8
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@@ -311,6 +311,8 @@ line in place — keep the Q-record for the audit trail rather than deleting it.
- [D-243: Spatial scale ladder — nested absolute containment with a single elastic planetary seam (resolves Q-110)](decisions/architecture.md#d-243-spatial-scale-ladder--nested-absolute-containment-with-a-single-elastic-planetary-seam-resolves-q-110) — _architecture_
- [D-244: Asset rendering — 3D objects in-world; 2D limited to textures + flat artwork](decisions/architecture.md#d-244-asset-rendering--3d-objects-in-world-2d-limited-to-textures--flat-artwork) — _architecture_
- [D-245: Nature-layer believability acceptance gate](decisions/architecture.md#d-245-nature-layer-believability-acceptance-gate) — _architecture_
- [D-246: Intra-class micro-habitat mosaic — sub-chunk palette modulation of the D-228 axes](decisions/architecture.md#d-246-intra-class-micro-habitat-mosaic--sub-chunk-palette-modulation-of-the-d-228-axes) — _architecture_
- [D-247: Native pre-existing biospheres + chirality food-safety bit — why the Reach is breathable, and half of it inedible](decisions/content.md#d-247-native-pre-existing-biospheres--chirality-food-safety-bit--why-the-reach-is-breathable-and-half-of-it-inedible) — _content_
## Open questions