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Bring basePower to Minecraft 1.20.1 - #27

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SkyBlade1978 merged 12 commits into
MinecraftModDevelopmentMods:master-1.20.1from
SkyBlade1978:feature/prepare-basepower-1.20.1
Nov 10, 2026
Merged

SkyBlade1978 merged 12 commits into
MinecraftModDevelopmentMods:master-1.20.1from
SkyBlade1978:feature/prepare-basepower-1.20.1

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Prepare basePower for Minecraft 1.20.1

This brings basePower to Minecraft 1.20.1, Forge 47.4.10 and Java 17. It
keeps the existing registry names and machine data, and maps vanilla pottery
and sound names that changed after 1.19.4.

The port follows the published 1.19.4 branch. The local release build produces
the same player jar as the frozen test kit. The automated checks cover machine
operation and restarts, upgrades on copies of older worlds, and the combined
client screens. Those checks do not qualify every modpack.

MMD OreSpawn 4.1.0.120011 is required. Base Metals is optional for new worlds,
but worlds that already use it need 3.1.2.120011 for the shared upgrade hook.
Back up the whole world before trying the upgrade on a copy.

CI uses the merged Base Metals source from
MMD/BaseMetals#534.
This PR prepares the source and CI. It does not publish a download.

@SkyBlade1978
SkyBlade1978 merged commit 6943b5b into MinecraftModDevelopmentMods:master-1.20.1 Nov 10, 2026
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