Mod compatibility and biome fixes:
- Modded biomes added through Forge's BiomeManager (e.g. Thaumcraft's Magical Forest) now generate in native-profile worlds: they overlay the 1.18 climate projection, drive biome tints, get their vanilla biome.decorate pass (Silverwood/Greatwood trees are back), and can be found with Nature's Compass (issue #7)
- Lush caves and dripstone caves are real registered biomes now — F3 and biome-reading mods report them instead of Forest/Extreme Hills
- Fix F3 showing "Outside of world..." below Y=0
- Fix startup crash with Better With Mods (pumpkin recipe replacement) and harden villager trade rewrite against modded trades (issue #15)
- Fix deepslate and infested deepslate generating sideways
- Fix the production jar failing to launch: CauldronMixin refmap was missing the LEVEL field mapping