fix：修复重连状态与认证流程关键缺陷

_Core/managers/WebSocketManager.gd

@@ -106,6 +106,9 @@ var _reconnect_timer: Timer = Timer.new()
 # 是否为正常关闭（非异常断开）
 var _clean_close: bool = true
 
+# 当前 CLOSED 状态是否已经处理过（防止每帧重复处理 close 事件）
+var _closed_state_handled: bool = false
+
 # 心跳定时器
 var _heartbeat_timer: Timer = Timer.new()
 
@@ -163,14 +166,20 @@ func _exit_tree() -> void:
 # ============================================================================
 
 # 连接到游戏服务器
-func connect_to_game_server() -> void:
+func connect_to_game_server(is_reconnect_attempt: bool = false) -> void:
 	if _connection_state == ConnectionState.CONNECTED or _connection_state == ConnectionState.CONNECTING:
 		push_warning("已经在连接或已连接状态")
 		return
 
-	_set_connection_state(ConnectionState.CONNECTING)
+	if is_reconnect_attempt:
+		_set_connection_state(ConnectionState.RECONNECTING)
+	else:
+		_set_connection_state(ConnectionState.CONNECTING)
 	_clean_close = true
-	_reconnect_attempt = 0
+	_closed_state_handled = false
+	# 仅在首次/手动连接时重置重连计数，重连流程保持累计尝试次数
+	if not is_reconnect_attempt:
+		_reconnect_attempt = 0
 
 	var err: Error = _websocket_peer.connect_to_url(WEBSOCKET_URL)
 	if err != OK:
@@ -295,23 +304,40 @@ func _check_websocket_state() -> void:
 
 	match state:
 		WebSocketPeer.STATE_CONNECTING:
+			_closed_state_handled = false
+
 			# 正在连接
 			if _connection_state != ConnectionState.CONNECTING and _connection_state != ConnectionState.RECONNECTING:
 				_set_connection_state(ConnectionState.CONNECTING)
 
 		WebSocketPeer.STATE_OPEN:
+			_closed_state_handled = false
+
 			# 连接成功
 			if _connection_state != ConnectionState.CONNECTED:
 				_on_websocket_connected()
 
 		WebSocketPeer.STATE_CLOSING:
+			_closed_state_handled = false
+
 			# 正在关闭
 			pass
 
 		WebSocketPeer.STATE_CLOSED:
-			# 连接关闭
-			var code: int = _websocket_peer.get_close_code()
-			_on_websocket_closed(code != 0)  # code=0 表示正常关闭
+			if _closed_state_handled:
+				return
+
+			_closed_state_handled = true
+
+			# 仅在连接生命周期中发生的关闭才触发关闭处理
+			var should_handle_close: bool = (
+				_connection_state == ConnectionState.CONNECTED
+				or _connection_state == ConnectionState.CONNECTING
+				or _connection_state == ConnectionState.RECONNECTING
+			)
+			if should_handle_close:
+				var close_code: int = _websocket_peer.get_close_code()
+				_on_websocket_closed(_is_clean_close_code(close_code))
 
 # WebSocket 连接成功处理
 func _on_websocket_connected() -> void:
@@ -333,6 +359,11 @@ func _on_websocket_closed(clean_close: bool) -> void:
 	else:
 		_set_connection_state(ConnectionState.DISCONNECTED)
 
+# 判断关闭码是否为干净关闭
+# Godot 中 close_code == -1 表示非干净关闭（异常断开）
+func _is_clean_close_code(close_code: int) -> bool:
+	return close_code != -1
+
 # ============================================================================
 # 内部方法 - 重连机制
 # ============================================================================
@@ -375,7 +406,7 @@ func _calculate_reconnect_delay() -> float:
 # 重连定时器超时处理
 func _on_reconnect_timeout() -> void:
 	_clean_close = false
-	connect_to_game_server()
+	connect_to_game_server(true)
 
 # ============================================================================
 # 内部方法 - 心跳机制