Abort world server startup when deed or rune templates fail to load

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/server/world/WorldServer.java

@@ -310,9 +310,19 @@ public class WorldServer {
         Logger.info("Loading Deed Templates");
         DeedTemplate._deeds = DeedParser.parseDeedFolder();
 
+        if (DeedTemplate._deeds.isEmpty()) {
+            Logger.error("ABORT! No deed templates loaded!");
+            exit(1);
+        }
+
         Logger.info("Loading Rune Templates");
         RuneTemplate._runes = RuneParser.parseRuneFolder();
 
+        if (RuneTemplate._runes.isEmpty()) {
+            Logger.error("ABORT! No rune templates loaded!");
+            exit(1);
+        }
+
         Logger.info("Loading PromotionClasses");
         DbManager.PromotionQueries.GET_ALL_PROMOTIONS();