Update dependencies and improve configuration management

- Updated LoLib dependency to version 3.0.0 in build.gradle.kts
- Added HikariCP and MySQL connector dependencies for improved database handling
- Enhanced jar minimization process to exclude JDBC pool and driver
- Refactored configuration management by introducing ConfigAccessor and ConfigLoader for better file handling and validation
- Removed deprecated GenerationOptions class and integrated its functionality into the new structure
- Improved command error handling and added cooldown hints for admin commands

src/test/java/dev/loki/loparkour/generator/jump/JumpValidatorTest.java

@@ -8,7 +8,6 @@ import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
 import static org.junit.jupiter.api.Assertions.*;
-import static org.mockito.Mockito.*;
 
 /**
  * Unit tests for JumpValidator.
@@ -104,9 +103,9 @@ class JumpValidatorTest {
         // Diagonal jump - 3 blocks X, 2 blocks Z, same height
         Location from = new Location(world, 0, 100, 0);
         Location to = new Location(world, 3, 100, 2);
-        
-        double distance = Math.sqrt(3*3 + 2*2); // ~3.6 blocks
-        assertTrue(validator.canJump(from, to), "Diagonal jump of ~3.6 blocks should be possible");
+
+        assertTrue(validator.canJump(from, to),
+                "Diagonal jump of ~" + Math.sqrt(3 * 3 + 2 * 2) + " blocks should be possible");
     }
 
     @Test

src/test/java/dev/loki/loparkour/style/RandomStyleTest.java

@@ -0,0 +1,25 @@
+package dev.loki.loparkour.style;
+
+import org.bukkit.Material;
+import org.junit.jupiter.api.Test;
+
+import java.util.Collections;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertSame;
+
+class RandomStyleTest {
+
+    @Test
+    void emptyMaterialListFallsBackToStone() {
+        RandomStyle style = new RandomStyle("test", Collections.emptyList());
+        assertEquals(Material.STONE, style.getNext());
+    }
+
+    @Test
+    void copiesListAndReturnsOnlyDeclaredMaterials() {
+        RandomStyle style = new RandomStyle("x", List.of(Material.OAK_PLANKS));
+        assertSame(Material.OAK_PLANKS, style.getNext());
+    }
+}

src/test/java/dev/loki/loparkour/world/WorldNameValidationTest.java

@@ -0,0 +1,30 @@
+package dev.loki.loparkour.world;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class WorldNameValidationTest {
+
+    @Test
+    void allowsSafeFolderNames() {
+        assertTrue(World.isValidWorldFolderName("parkour"));
+        assertTrue(World.isValidWorldFolderName("lp_world"));
+        assertTrue(World.isValidWorldFolderName("a1"));
+    }
+
+    @Test
+    void rejectsPathTraversalAndSeparators() {
+        assertFalse(World.isValidWorldFolderName("../etc"));
+        assertFalse(World.isValidWorldFolderName("a/b"));
+        assertFalse(World.isValidWorldFolderName("a\\b"));
+    }
+
+    @Test
+    void rejectsBlankOrTooLong() {
+        assertFalse(World.isValidWorldFolderName(""));
+        assertFalse(World.isValidWorldFolderName("   "));
+        assertFalse(World.isValidWorldFolderName("x".repeat(65)));
+    }
+}