free_port (7 copies), offline_uuid (4), varint and parse_varint (3 and 2),
dbits (6), fbits (4) and settled (2) move into lab.py; every caller uses
lab's. The other server harnesses keep importing free_port from
test_dedicated_server_parity, which now takes lab's. Imports the moved
code left unused go too.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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>
vanilla_world_check.py (used by the light harness) defaulted to port 25671, so two parity runs on one machine failed with 'FAILED TO BIND TO PORT'. It now picks a free port unless --port is given. The save round trip, datafix and upgrade_world tools derived their port from the pid or a random number; they ask the OS for a free one like test_dedicated_server_parity does.
Fixes#461
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
The vanilla differential run showed Horizon writing fields vanilla leaves out: empty scoreboard parts, recipe book settings at their default, an empty warden anger list. These are now omitted, and mobs loaded without saved equipment no longer receive the default bow. Opening a world whose level.dat is older than 26.3 now fails with a message naming tools/upgrade_world.py, which runs vanilla's own forceUpgrade on a copy. The roundtrip harness lists the timing-dependent differences it tolerates, and horizon-ctl waits up to five minutes for the control socket on a loaded machine.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Ludovic Marie