Preserve Java parity oracles and comparison benchmark instrumentation. Move their remaining dependency locks under tools/benchmark-deps and remove legacy product packaging, fixtures, and CI checks.
Co-Authored-By: OpenAI Codex gpt-6.1-sol <noreply@openai.com>
lab.prepare imported every client library in the version JSON, ignoring
its OS rules, so a Linux install failed on the macOS-only
java-objc-bridge the official launcher never downloads there. The rule
evaluation moves from runtime.py into lab.py and one selector,
client_library_artifacts, now serves preparation, the runtime and the
model baking harness: OS rules as the launcher applies them, and the
natives for this architecture (classifier suffixes, plain natives being
the x64 build only when an ARM variant is listed). Required libraries
are still checksummed and a missing one still errors.
Mojang republished 26.3.json twice (702fe591, then 11f1aefe, the current
one) with only assetIndex changed: non-English translations, same jars
and libraries. The lock pins the current file and accepts both earlier
ones; preparation takes the launcher's copy so it matches the asset
index installed with it, and an unknown republish errors clearly.
Fixes#41
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Horizon no longer fetches anything of Minecraft from Mojang's servers. The
client jar, version JSON, libraries and assets come from the user's official
launcher install, and the server jar is one they downloaded themselves
(--server-jar or HORIZON_SERVER_JAR). Every file is checked against checksums
pinned in research-lock.json, and the prepared .local/ layout is byte-identical
to the old downloads, so the harnesses and the native client are unchanged.
CI keeps the offline checks on GitHub's runners; the vanilla comparisons and
the mod build need the game, so they move to a manual job on a self-hosted
runner that holds the maintainer's own copy.
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
rdbtCVS