feat: 新增角色系统及基础功能实现

新增HCN、Lynx和MuyangDog三个可玩角色及其相关资源
实现角色选择界面和角色属性系统
重构玩家生成逻辑以支持角色选择
优化角色卡片UI显示效果

scripts/Contents/Panels/Starter.gd

@@ -76,14 +76,18 @@ func startMultiplayerGame():
 	MultiplayerState.connection = multiplayer.multiplayer_peer
 	WorldManager.rootNode.multiplayer.multiplayer_peer = multiplayer.multiplayer_peer
 	for i in getPlayerNames():
-		EntityBase.generatePlayer(i)
+		EntityBase.generatePlayer(i, selectedCharacter)
 	UIState.closeCurrentPanel()
 func startSingleplayerGame():
 	startSingleplayerBtn.disabled = true
 	MultiplayerState.isMultiplayer = false
 	MultiplayerState.playerName = playerNameInput.text
 	Wave.usingWaveData = GAMEMODE_MAP_WAVE[gamemodeOption.selected]
-	UIState.player = EntityBase.generatePlayer(playerNameInput.text)
+	var extras = ArrayTool.mergeDictionary(ArrayTool.dictionaryFromEntries(
+		getCurrentSelectedCharacter().fields,
+		getCurrentSelectedCharacter().fieldValues
+	), OutGameStorage.upgradableFieldsValue)
+	UIState.player = EntityBase.generatePlayer(playerNameInput.text, selectedCharacter, extras)
 	WorldManager.rootNode.spawnWave(Vector2.ZERO)
 	UIState.setPanel("CompilingTip")