Read Git's pre-push ref updates and inspect the full reachable history of each non-deleted local object ID. Ignore unrelated refs while rejecting private artifacts in deleted files, merge-only paths, and stored history masked by local replacements.
Add regression coverage for branches, tags, raw revisions, multiple updates, deletion-only pushes, and artifact detection.
Co-Authored-By: OpenCode gpt-6.1-sol <noreply@openai.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.