Running java -jar some-parent-directory/BiomeTool.jar will throw the below exception, cd-ing into some-parent-directory and running java -jar BiomeTool.jar works as expected.

java.io.UncheckedIOException: java.nio.file.NoSuchFileException: ./addons/bootstrap
	at com.dfsek.terra.addon.BootstrapAddonLoader.loadAddons(BootstrapAddonLoader.java:94)
	at com.dfsek.terra.AbstractPlatform.load(AbstractPlatform.java:190)
	at com.dfsek.terra.biometool.PlatformImpl.<init>(PlatformImpl.kt:23)
	at com.dfsek.terra.biometool.BiomeToolView.<init>(BiomeToolView.kt:28)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
	at java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:128)
	at java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:347)
	at java.base/java.lang.Class.newInstance(Class.java:645)
	at tornadofx.FXKt.find(FX.kt:434)
	at tornadofx.FXKt.find$default(FX.kt:423)
	at tornadofx.App.start(App.kt:83)
	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:847)
	at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
	at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
	at com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:290)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.nio.file.NoSuchFileException: ./addons/bootstrap
	at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
	at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
	at java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)
	at java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:149)
	at java.base/sun.nio.fs.LinuxFileSystemProvider.readAttributes(LinuxFileSystemProvider.java:99)
	at java.base/java.nio.file.Files.readAttributes(Files.java:1851)
	at java.base/java.nio.file.FileTreeWalker.getAttributes(FileTreeWalker.java:226)
	at java.base/java.nio.file.FileTreeWalker.visit(FileTreeWalker.java:277)
	at java.base/java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:323)
	at java.base/java.nio.file.FileTreeIterator.<init>(FileTreeIterator.java:71)
	at java.base/java.nio.file.Files.walk(Files.java:3918)
	at com.dfsek.terra.addon.BootstrapAddonLoader.loadAddons(BootstrapAddonLoader.java:87)
	... 22 more

Application does not extract addons and dump them into the correct directory structure, thus it cannot run outside the preconfigured gradle env.

Logs:

2022-03-27 21:59:29,752 [main]                           INFO  com.dfsek.terra.biometool.BiomeToolLauncher                      - Starting BiomeTool application.
28, 2022 2:41:18 AM com.sun.javafx.application.PlatformImpl startup
WARNING: Unsupported JavaFX configuration: classes were loaded from 'unnamed module @6a472554'
28, 2022 2:41:18 AM tornadofx.Stylesheet$Companion detectAndInstallUrlHandler
INFO: Installing CSS url handler, since it was not picked up automatically
2022-03-27 21:59:30,429 [JavaFX Application Thread]      INFO  com.dfsek.terra.biometool.BiomeToolView                          - Initializing Terra platform...
2022-03-27 21:59:30,448 [JavaFX Application Thread]      INFO  com.dfsek.terra.biometool.BiomeToolPlatform                      - Root directory: C:\Users\Zelef\.
2022-03-27 21:59:30,449 [JavaFX Application Thread]      INFO  com.dfsek.terra.AbstractPlatform                                 - Initializing Terra...
2022-03-27 21:59:30,459 [JavaFX Application Thread]      INFO  com.dfsek.terra.config.PluginConfigImpl                          - Loading config values from config.yml
2022-03-27 21:59:30,526 [JavaFX Application Thread]      DEBUG com.dfsek.terra.addon.BootstrapAddonLoader                       - Loading bootstrap addons from .\addons\bootstrap
Exception in Application start method
2022-03-27 21:59:30,530 [JavaFX Application Thread]      INFO  com.dfsek.terra.biometool.BiomeToolView                          - Initializing Terra platform...
Exception in Application stop method
28, 2022 2:41:18 AM tornadofx.DefaultErrorHandler uncaughtException
SEVERE: Uncaught error
java.lang.RuntimeException: Exception in Application start method
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:901)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:196)
        at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.ExceptionInInitializerError
        at com.dfsek.terra.biometool.BiomeToolView.<init>(BiomeToolView.kt:75)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
        at java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:128)
        at java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:347)
... (33 lines left)

Being able to profile how fast biome providers generate biome placements would be very helpful in optimizations, especially with large complex pipelines.

Including a small little icon after pressing Reload Packs if any of the packs failed to load would make it easy to see if you need to check the console. Additionally, a check mark could indicate no pack errors.