- Added entries to .gitignore for local Paper test server and API documentation. - Included the run-paper plugin in build.gradle.kts for local server execution. - Configured runServer task with Minecraft version 1.21.4 for testing.
- Update Paper API: 1.20.1 -> 1.21.4 - Update plugin version: 1.5.5-1.20.1 -> 1.5.5-1.21.8 - Add checkstyle plugin with reasonable rules - Fix Enchantment.LUCK -> Enchantment.UNBREAKING - Fix EntityType.FIREWORK -> EntityType.FIREWORK_ROCKET - Remove unused imports - Add temp_*/ to .gitignore - 118 files changed, 1633 insertions(+), 1301 deletions(-)