refactor(01): align scaffold with Mythlane conventions (Kotlin DSL, CamelCase manifest, pinned server version)

- Convert build.gradle/settings.gradle to Kotlin DSL matching VotePipe + myth_*
- Manifest keys: lowercase -> CamelCase (Group/Name/Version/Main/ServerVersion/...)
  matching production Mythlane plugins (empirical authority)
- gradle.properties adopts pluginGroup/pluginVersion/pluginDescription/hytaleServerVersion
- Template manifest via processResources.expand(${version}, ${description}, ${hytaleServerVersion})
- Add baseline deps: gson (relocated), jetbrains annotations, JUnit 5
- shadowJar archiveBaseName=hytale-gravity-flip

Rebuild: BUILD SUCCESSFUL, fat JAR regenerated with CamelCase manifest.

build.gradle

@@ -1,34 +0,0 @@
-plugins {
-    id 'java'
-    id 'com.gradleup.shadow' version '9.3.1'
-}
-
-java {
-    toolchain {
-        languageVersion = JavaLanguageVersion.of(25)
-    }
-}
-
-repositories {
-    mavenCentral()
-    maven {
-        name = 'hytale'
-        url = 'https://maven.hytale.com/release'
-    }
-}
-
-dependencies {
-    compileOnly 'com.hypixel.hytale:Server:+'
-}
-
-tasks.named('jar') {
-    enabled = false
-}
-
-tasks.named('build') {
-    dependsOn tasks.named('shadowJar')
-}
-
-tasks.named('shadowJar') {
-    archiveClassifier.set('')
-}

build.gradle.kts

@@ -0,0 +1,74 @@
+plugins {
+    id("java-library")
+    id("com.gradleup.shadow") version "9.3.1"
+}
+
+group = findProperty("pluginGroup") as String? ?: "com.mythlane"
+version = findProperty("pluginVersion") as String? ?: "0.1.0"
+description = findProperty("pluginDescription") as String? ?: "Hytale Gravity Flip"
+
+val hytaleServerVersion: String by project
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven {
+        name = "hytale"
+        url = uri("https://maven.hytale.com/release")
+    }
+}
+
+dependencies {
+    compileOnly("com.hypixel.hytale:Server:$hytaleServerVersion")
+
+    implementation("com.google.code.gson:gson:2.10.1")
+    implementation("org.jetbrains:annotations:24.1.0")
+
+    testImplementation("org.junit.jupiter:junit-jupiter:5.10.0")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(25))
+    }
+}
+
+tasks {
+    compileJava {
+        options.encoding = Charsets.UTF_8.name()
+        options.release = 25
+    }
+
+    processResources {
+        filteringCharset = Charsets.UTF_8.name()
+        val props = mapOf(
+            "group" to project.group,
+            "version" to project.version,
+            "description" to project.description,
+            "hytaleServerVersion" to hytaleServerVersion
+        )
+        inputs.properties(props)
+        filesMatching("manifest.json") {
+            expand(props)
+        }
+    }
+
+    shadowJar {
+        archiveBaseName.set("hytale-gravity-flip")
+        archiveClassifier.set("")
+        relocate("com.google.gson", "com.mythlane.gravityflip.libs.gson")
+    }
+
+    jar {
+        enabled = false
+    }
+
+    build {
+        dependsOn(shadowJar)
+    }
+
+    test {
+        useJUnitPlatform()
+    }
+}

gradle.properties

@@ -1,2 +1,6 @@
-group=com.mythlane
-version=0.1.0
+pluginGroup=com.mythlane
+pluginVersion=0.1.0
+pluginDescription=Hytale plugin - inverted gravity zones defined via an in-game wand
+hytaleServerVersion=2026.03.26-89796e57b
+
+org.gradle.jvmargs=-Xmx1024m

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -57,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/b631911858264c0b6e4d6603d677ff5218766cee/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,7 +210,6 @@ DEFAULT_JVM_OPTS='-Dfile.encoding=UTF-8 "-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
         -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 

gradlew.bat

@@ -70,11 +70,10 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell

settings.gradle

@@ -1 +0,0 @@
-rootProject.name = 'hytale-gravity-flip'

settings.gradle.kts

@@ -0,0 +1 @@
+rootProject.name = "hytale-gravity-flip"

src/main/resources/manifest.json

@@ -1,11 +1,20 @@
 {
-  "group": "com.mythlane",
-  "name": "hytale-gravity-flip",
-  "version": "0.1.0",
-  "serverVersion": "2026.03.26-89796e57b",
-  "description": "Inverted gravity zones defined via an in-game wand.",
-  "authors": [
-    { "name": "Mythlane" }
-  ],
-  "main": "com.mythlane.gravityflip.GravityFlipPlugin"
+  "Group": "Mythlane",
+  "Name": "GravityFlip",
+  "Version": "${version}",
+  "Description": "${description}",
+  "Authors": [
+    {
+      "Name": "Mythlane Team",
+      "Email": "contact@mythlane.com",
+      "Url": "https://mythlane.com"
+    }
+  ],
+  "Website": "https://mythlane.com",
+  "Main": "com.mythlane.gravityflip.GravityFlipPlugin",
+  "ServerVersion": "${hytaleServerVersion}",
+  "Dependencies": {},
+  "OptionalDependencies": {},
+  "DisabledByDefault": false,
+  "IncludesAssetPack": false
 }