How I Designed a 4-Layer i18n Architecture for Minecraft's Standard UI in Spigot

Short summary

TreasureRun separates Minecraft's i18n into four layers: ProtocolLib boundary, ResourcePack, Fabric runtime sync, and pure Java localizer. This decouples framework-specific code from testable logic, enabling JUnit testing without a running server. The pattern exemplifies boundary-driven architecture for complex localization challenges.

• •Four-layer design isolates Minecraft framework dependencies from core i18n logic
• •Pure Java packet localizer enables unit testing without server runtime
• •ResourcePack and Fabric sync handle client-side language state independently

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