A new harness decorates a 13x13-chunk area around each site, on both sides,
in the order vanilla's chunk scheduler uses around a player standing there
(chunk_dump HORIZON_LIST_ORDER prints decoration_order::vanilla_order), and
compares every block state, quart biome, block entity and scheduled tick:
the two reported spots on seed 1891623539983467248 (taiga trees at
204 -239; a stronghold with sculk and a geode at 4870 401), eleven tree-heavy
biomes and the nearest mineshaft, village, ancient city and trial chambers of
two seeds. 21 sites, 3,549 chunks, 0 differences.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Add version-bound core, world data, geometry, generation and feature implementations with native client/server comparison tools and scoped evidence reports. Apply Horizon project branding.
Workspace tests, Clippy and 147 Python tests passed. Full 51-family survival and expanded provider comparisons are still running; complete gameplay parity and a playable Rust client remain unfinished. Private game artifacts and the isolated simple-block placement work are excluded.
Ludovic Marie