Archive both-JAR matches for all 51 survival families, 1,286 block definitions and 35,723 states across 9,229,463 fixtures. Preserve the scope boundary: placement, updates and complete gameplay remain unfinished.
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