[1.21.1 NeoForge] Crash during initialization with MidnightLib installed - NullPointerException in MidnightConfig

[exocyt0sis]

Bug Description

The game crashes during initialization with a NullPointerException coming from MidnightConfig.writeChanges(String). This occurs when PackRepository.setSelected calls the Visual Overhaul mixin (handler$dpe000$visualoverhaul$setDefaultEnabledPacks).

It seems like Visual Overhaul is attempting to write to the config before MidnightLib has fully registered the mod's configuration map, resulting in a null lookup.

Steps to Reproduce

1. Install Visual Overhaul for NeoForge 1.21.1.
2. Install MidnightLib (version 1.9.3+1.21.1).
3. Launch Minecraft.
4. The game crashes on the "Initializing game" stage.

Environment

• Minecraft Version: 1.21.1
• Mod Loader: NeoForge (Loader version 4.0.42 / Modlauncher 11.0.5)
• MidnightLib Version: 1.9.3+1.21.1
• Visual Overhaul Version: Latest available for 1.21.1 NeoForge

Additional Context

• Deleting the configuration files for Visual Overhaul did not resolve the issue.
• The crash happens on the Render Thread during game setup.

Crash Report

java.lang.NullPointerException: Cannot invoke "eu.midnightdust.lib.config.MidnightConfig.writeChanges(String)" because the return value of "java.util.Map.get(Object)" is null
	at TRANSFORMER/midnightlib@1.9.3/eu.midnightdust.lib.config.MidnightConfig.write(MidnightConfig.java:241)
	at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.packs.repository.PackRepository.handler$dpe000$visualoverhaul$setDefaultEnabledPacks(PackRepository.java:530)
	at TRANSFORMER/minecraft@1.21.1/net.minecraft.server.packs.repository.PackRepository.setSelected(PackRepository.java:56)
	at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Options.loadSelectedResourcePacks(Options.java:1554)
	at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.Minecraft.<init>(Minecraft.java:488)
	at TRANSFORMER/minecraft@1.21.1/net.minecraft.client.main.Main.main(Main.java:214)```