Private Schema Builder train beta, 0.4.0-beta.2

Prism Launcher: Add Instance > Import this ZIP. It creates a separate beta
profile. Use Java 21 and your own licensed Java account, then join the saved
Schema Builder Beta server at 192.168.2.149:25566.
Keep the production profile for 192.168.2.149:25565. Do not run the production
updater against this beta profile; it would replace the candidate JAR.

Use vanilla minecarts: a furnace minecart is the train engine, with normal
passenger minecarts behind it. Hold a chain and right-click one cart, then the
next nearby cart to connect them. A successful survival link uses one chain.
Repeat for additional carts. Use one furnace engine at the end of the train.
Sneak-right-click a linked cart with an empty hand to disconnect it.

Right-click the furnace cart to open its fuel screen. Put coal or charcoal in
the fuel slot, then ride a connected passenger cart. Use your Forward control
(normally W) to accelerate, Back (normally S) to slow down, and Jump (normally
Space) to brake. Start slowly on a complete, clear rail route.
Derailing a moving train can explode and damage the beta world. Human trial
routes should be built in a dedicated beta test area away from family builds.

This candidate retains the Netherite Golem Spawn Egg and existing schematic
items. Controlled server acceptance is documented in TRAIN_ARTIFACT.json;
authenticated client joins, client appearance and human multiplayer require
separate observations. Importing this pack does not update an existing profile.

The pack contains the Schema Builder mod/settings and adapted MIT-licensed
True Rails code/resources. See the included third-party notices and license.
It includes no Minecraft distribution, launcher accounts, worlds or credentials.
No standalone True Rails mod is required.
