refactor: migrate package from com.loki to dev.loki

- Change base package from com.loki to dev.loki across all Java files
- Update plugin.yml main class path
- Fix ConfigParseException imports in test files
- Update build.gradle.kts relocate patterns
- Add missing imports in ConfigLoaderTest.java
- Update TODO.md with current status

BREAKING CHANGE: Package namespace changed from com.loki to dev.loki

src/main/java/dev/loki/lomines/handler/MineRewardHandler.java

@@ -0,0 +1,71 @@
+package dev.loki.lomines.handler;
+
+import dev.loki.lomines.LoMinesPlugin;
+import dev.loki.lomines.data.config.MineConfig;
+import dev.loki.lomines.data.reward.Reward;
+import org.bukkit.Material;
+import org.bukkit.block.Block;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.List;
+import java.util.Random;
+
+/**
+ * Handles reward distribution for block breaks in mines.
+ * Checks configured rewards and gives items/executes commands based on chance.
+ */
+public final class MineRewardHandler {
+
+    private final List<Reward> rewards;
+    private final LoMinesPlugin plugin;
+    private final Random random = new Random();
+
+    public MineRewardHandler(MineConfig config, LoMinesPlugin plugin) {
+        this.rewards = config.getRewards();
+        this.plugin = plugin;
+    }
+
+    /**
+     * Checks and applies rewards for a broken block.
+     *
+     * @param player The player who broke the block
+     * @param block  The block that was broken
+     */
+    public void checkRewards(Player player, Block block) {
+        Material material = block.getType();
+
+        for (Reward reward : rewards) {
+            if (reward.matches(material) && rollChance(reward.chance())) {
+                giveReward(player, reward);
+            }
+        }
+    }
+
+    /**
+     * Rolls a random chance check.
+     *
+     * @param chance The chance percentage (0-100)
+     * @return true if the roll succeeds
+     */
+    private boolean rollChance(double chance) {
+        return random.nextDouble() * 100.0 < chance;
+    }
+
+    /**
+     * Gives a reward to the player.
+     *
+     * @param player The player to give the reward to
+     * @param reward The reward to give
+     */
+    private void giveReward(Player player, Reward reward) {
+        for (ItemStack item : reward.items()) {
+            player.getInventory().addItem(item.clone());
+        }
+
+        for (String command : reward.commands()) {
+            String parsed = command.replace("%player%", player.getName());
+            plugin.getServer().dispatchCommand(plugin.getServer().getConsoleSender(), parsed);
+        }
+    }
+}