port: replace Paper component APIs, chat pipeline, events and schedulers

- Msg.send/broadcast/actionBar/title/legacy/plain for all 58 files sendMessage replacements (plan step 3)
- ChatEventListener: AsyncChatEvent->AsyncPlayerChatEvent, getRecipients filtering, manual render+Msg.send loop, HIGHEST|ignoreCancelled, nobodyHeard via Bukkit scheduler (step 4)
- EnhancedChatRenderer: remove ChatRenderer/Audience, render(Player,Component,Component,Player), getLocale String, Msg.actionBar
- PlayerEventListener: join/quit/death String API, getCustomName/getDisplayName legacy, Msg.broadcast
- FoliaUtil: IS_FOLIA false, Bukkit scheduler only; AutoMessageManager BukkitTask
- CustomCommandManager: reflective getCommandMap; other mechanical fixes (displayName, kick, inventory titles)
- single universal jar (variant A) - loads on Spigot 1.20.1 and Paper

src/main/java/com/loki/lochat/integrations/PlaceholderAPIHook.java

@@ -40,7 +40,7 @@ public class PlaceholderAPIHook extends PlaceholderExpansion {
 
     @Override
     public @NotNull String getVersion() {
-        return plugin.getPluginMeta().getVersion();
+        return plugin.getDescription().getVersion();
     }
 
     @Override