Add shared_secret configuration to multi-server and standalone setups

core/src/main/java/com/xujiayao/discord_mc_chat/utils/YamlUtils.java

@@ -20,7 +20,8 @@ public class YamlUtils {
 
 	private static final List<String> REQUIRED_MODIFIED_KEYS = List.of(
 			"discord.bot.token",
-			"multi_server.server_name"
+			"multi_server.server_name",
+			"multi_server.connection.shared_secret"
 	);
 
 	/**

core/src/main/resources/config/config_multi_server_client.yml

@@ -17,6 +17,7 @@ multi_server:
   connection:
     host: "127.0.0.1"
     port: 5000
+    shared_secret: "your_shared_secret_here"
 
 # DMCC 命令权限设置
 # OP 等级对应的官方 Minecraft 权限级别：

core/src/main/resources/config/config_standalone.yml

@@ -19,6 +19,7 @@ multi_server:
   connection:
     host: "127.0.0.1"  # Limit accessibility, change to "0.0.0.0" if allow external connections
     port: 5000
+    shared_secret: "to_be_auto_replaced"
   servers:
     # This list acts as a whitelist. Only clients with a server name defined here are allowed to connect.
     - name: "SMP"