lab.VERSION, lab.GAME (.local/minecraft/<version>) and lab.RESOURCES
(.local/horizon-client/<version>) come from the lock, and lab.version_info()
reads the pinned client jar's version.json. Every harness, generator and
tool that named 26.3 (resource folders, jar and source paths, result
records, the vanilla client's --version and asset index, the bare login
client's protocol, the benchmark's options.txt data version, the packet id
table's header) uses them, so a candidate worktree pinned to another version
runs them unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A Java oracle builds vanilla's real Brigadier command tree with the loaded registries and data-pack tags, exports the tree, and parses a corpus of command strings. The corpus is generated by walking that tree with valid and invalid samples for every argument type plus hand-written edge cases. A Rust example parses the same corpus with Horizon's dispatcher and the Python driver compares success, exact error text and cursor, and end-of-input completion suggestions, with tree-diff and mismatch summary helpers. Currently 79 percent of 39685 inputs match at permission level 4. Entity selector errors now rewind to the start of the input like vanilla.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Ludovic Marie