port: compat layer

- add compat/Adventure (BukkitAudiences lifecycle with legacy fallback)
- add compat/Msg (send/broadcast/actionBar/title/legacy/plain/displayName/playerListName/kick/itemMeta/inventoryTitle)
- wire Adventure.init/close in LoChat onEnable/onDisable
- remove unused reflection-based utils/platform/AdventureManager

src/main/java/com/loki/lochat/LoChat.java

@@ -47,7 +47,8 @@ public final class LoChat extends JavaPlugin {
     @Override
     public void onEnable() {
         instance = this;
-        getLogger().info("Загрузка LoChat v" + getPluginMeta().getVersion() + " для Paper/Folia " + Bukkit.getMinecraftVersion() + "...");
+        com.loki.lochat.compat.Adventure.init(this);
+        getLogger().info("Загрузка LoChat v" + getDescription().getVersion() + " для Spigot " + Bukkit.getBukkitVersion() + "...");
 
         // Инициализация
         initializer = new PluginInitializer(this);
@@ -95,6 +96,7 @@ public final class LoChat extends JavaPlugin {
     @Override
     public void onDisable() {
         shutdown.shutdown(serviceRegistry, autoMessageManager, discordIntegration, gradientModule);
+        com.loki.lochat.compat.Adventure.close();
     }
 
     public void reload() {