refactor(网络同步): 重构实体同步逻辑和玩家生成流程

- 将EntityBase的health改为@export变量以便同步
- 添加MultiplayerSynchronizer节点处理网络同步
- 修改Wave.next()方法处理EncodedObjectAsID类型
- 添加findPlayer方法通过名称查找玩家
- 调整玩家生成流程，确保UIState.player正确设置

scripts/Contents/Panels/Starter.gd

@@ -63,6 +63,7 @@ func startMultiplayerGame():
 func startSingleplayerGame():
 	MultiplayerState.isMultiplayer = false
 	EntityBase.generatePlayer(playerNameInput.text)
+	UIState.player = EntityBase.findPlayer(playerNameInput.text)
 	WorldManager.rootNode.spawnWave()
 	UIState.closeCurrentPanel()
 

scripts/Contents/Wave.gd

@@ -71,8 +71,8 @@ static func entityCountOf(wave: Wave) -> int:
 		else:
 			return randi_range(ceil(wave.minCount), floor(wave.maxCount * (1 + GameRule.entityCountBoostPerWave * current)))
 	return 0
-static func spawn() -> Array[Wave]:
-	var result: Array[Wave] = []
+static func spawn() -> Array:
+	var result: Array = []
 	for i in range(len(data)):
 		var wave: Wave = data[i]
 		for j in range(entityCountOf(wave)):
@@ -80,8 +80,10 @@ static func spawn() -> Array[Wave]:
 			currentWave.entityPosition = MathTool.randv2_range(500)
 			result.append(currentWave)
 	return result
-static func next(waves: Array[Wave]):
+static func next(waves: Array):
 	for wave in waves:
+		if wave is EncodedObjectAsID:
+			wave = instance_from_id(wave.get_instance_id())
 		EntityBase.generate(ComponentManager.getCharacter(wave.entity), wave.entityPosition, true, wave.isBoss)
 	current += 1
 static func startWith(wave: int):