feat：实现登录系统和用户认证功能

- 添加登录场景（login_scene.tscn）和主菜单场景（main_menu_scene.tscn）
- 实现认证管理器（AuthManager）用于用户登录和会话管理
- 添加核心服务：加密服务、存储服务、网络服务
- 配置项目主场景为登录场景
- 添加自动加载服务到项目配置
- 添加开发环境配置（VSCode、Claude）

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

scripts/ui/UI_Login.gd

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+extends Control
+
+## 登录界面控制器
+## 处理登录界面的用户交互、输入验证、错误提示等
+
+# UI 节点引用
+@onready var passwordLoginTab: Button = $LoginPanel/PasswordLoginTab
+@onready var codeLoginTab: Button = $LoginPanel/CodeLoginTab
+@onready var usernameInput: LineEdit = $LoginPanel/UsernameInput
+@onready var passwordInput: LineEdit = $LoginPanel/PasswordInput
+@onready var togglePasswordButton: Button = $LoginPanel/TogglePasswordButton
+@onready var rememberPasswordCheckBox: CheckBox = $LoginPanel/RememberPasswordCheckBox
+@onready var autoLoginCheckBox: CheckBox = $LoginPanel/AutoLoginCheckBox
+@onready var enterButton: TextureButton = $LoginPanel/EnterButton
+@onready var forgotPasswordButton: LinkButton = $LoginPanel/ForgotPasswordButton
+@onready var registerButton: LinkButton = $LoginPanel/RegisterButton
+@onready var statusLabel: Label = $LoginPanel/StatusLabel
+@onready var loadingOverlay: ColorRect = $LoadingOverlay
+@onready var loadingLabel: Label = $LoadingOverlay/LoadingLabel
+
+# 当前登录模式
+enum LoginMode {
+	PASSWORD,  # 密码登录
+	CODE       # 验证码登录
+}
+var currentMode: LoginMode = LoginMode.PASSWORD
+
+func _ready():
+	# 连接Tab按钮信号
+	passwordLoginTab.pressed.connect(_onPasswordTabPressed)
+	codeLoginTab.pressed.connect(_onCodeTabPressed)
+
+	# 连接主要按钮信号
+	enterButton.pressed.connect(_onEnterButtonPressed)
+	togglePasswordButton.pressed.connect(_onTogglePasswordPressed)
+
+	# 连接底部链接按钮
+	forgotPasswordButton.pressed.connect(_onForgotPasswordPressed)
+	registerButton.pressed.connect(_onRegisterPressed)
+
+	# 连接 AuthManager 信号
+	AuthManager.login_success.connect(_onLoginSuccess)
+	AuthManager.login_failed.connect(_onLoginFailed)
+
+	# 连接输入框回车事件
+	usernameInput.text_submitted.connect(_onUsernameSubmitted)
+	passwordInput.text_submitted.connect(_onPasswordSubmitted)
+
+	# 自动填充记住的账号密码
+	_loadSavedAccount()
+
+	# 初始化状态
+	_hideLoading()
+	_clearStatus()
+	_updateLoginMode()
+
+## Tab切换 - 密码登录
+func _onPasswordTabPressed() -> void:
+	if currentMode != LoginMode.PASSWORD:
+		currentMode = LoginMode.PASSWORD
+		codeLoginTab.button_pressed = false
+		passwordLoginTab.button_pressed = true
+		_updateLoginMode()
+
+## Tab切换 - 验证码登录
+func _onCodeTabPressed() -> void:
+	if currentMode != LoginMode.CODE:
+		currentMode = LoginMode.CODE
+		passwordLoginTab.button_pressed = false
+		codeLoginTab.button_pressed = true
+		_updateLoginMode()
+
+## 更新登录模式UI
+func _updateLoginMode() -> void:
+	match currentMode:
+		LoginMode.PASSWORD:
+			passwordInput.placeholder_text = "输入密码"
+			passwordInput.secret = true
+			togglePasswordButton.visible = true
+		LoginMode.CODE:
+			passwordInput.placeholder_text = "输入验证码"
+			passwordInput.secret = false
+			togglePasswordButton.visible = false
+
+## 切换密码显示/隐藏
+func _onTogglePasswordPressed() -> void:
+	passwordInput.secret = !passwordInput.secret
+	togglePasswordButton.text = "👁" if passwordInput.secret else "🔒"
+
+## 加载保存的账号密码
+func _loadSavedAccount() -> void:
+	var savedAccount = StorageService.loadAccount()
+
+	var username = savedAccount.get("username", "")
+	var password = savedAccount.get("password", "")
+	var rememberPassword = savedAccount.get("remember_password", false)
+
+	# 设置用户名
+	usernameInput.text = username
+
+	if rememberPassword and not password.is_empty():
+		passwordInput.text = password
+		rememberPasswordCheckBox.button_pressed = true
+	else:
+		rememberPasswordCheckBox.button_pressed = false
+
+## 进入小镇按钮点击事件
+func _onEnterButtonPressed() -> void:
+	match currentMode:
+		LoginMode.PASSWORD:
+			_handlePasswordLogin()
+		LoginMode.CODE:
+			_handleCodeLogin()
+
+## 处理密码登录
+func _handlePasswordLogin() -> void:
+	# 验证输入
+	var validation = _validateInput()
+	if not validation.valid:
+		_showError(validation.error_code)
+		return
+
+	# 显示加载状态
+	_showLoading("登录中...")
+
+	# 获取输入
+	var username = usernameInput.text.strip_edges()
+	var password = passwordInput.text
+	var remember = rememberPasswordCheckBox.button_pressed
+
+	# 调用 AuthManager 登录
+	var result = await AuthManager.login(username, password, remember)
+
+	# 隐藏加载状态
+	_hideLoading()
+
+## 处理验证码登录
+func _handleCodeLogin() -> void:
+	# TODO: 实现验证码登录逻辑
+	_showError(ErrorCode.SERVER_ERROR, "验证码登录功能暂未开放")
+
+## 用户名输入框回车事件
+func _onUsernameSubmitted(_text: String) -> void:
+	passwordInput.grab_focus()
+
+## 密码输入框回车事件
+func _onPasswordSubmitted(_text: String) -> void:
+	_onEnterButtonPressed()
+
+## 忘记密码按钮点击
+func _onForgotPasswordPressed() -> void:
+	# TODO: 跳转到忘记密码页面
+	_showError(ErrorCode.SERVER_ERROR, "忘记密码功能暂未开放")
+
+## 注册按钮点击
+func _onRegisterPressed() -> void:
+	# TODO: 跳转到注册页面
+	_showError(ErrorCode.SERVER_ERROR, "注册功能暂未开放")
+
+## 登录成功回调
+func _onLoginSuccess(userData: UserData) -> void:
+	_hideLoading()
+	_showSuccess("登录成功！")
+
+	# 延迟0.5秒后跳转到主菜单
+	await get_tree().create_timer(0.5).timeout
+	get_tree().change_scene_to_file("res://scenes/main_menu_scene.tscn")
+
+## 登录失败回调
+func _onLoginFailed(errorCode: int, errorMessage: String) -> void:
+	_hideLoading()
+	_showError(errorCode, errorMessage)
+
+## 验证输入
+func _validateInput() -> Dictionary:
+	var username = usernameInput.text.strip_edges()
+	var password = passwordInput.text
+
+	# 检查是否为空
+	if username.is_empty() or password.is_empty():
+		return {
+			"valid": false,
+			"error_code": ErrorCode.INVALID_INPUT
+		}
+
+	return {"valid": true}
+
+## 显示加载状态
+func _showLoading(message: String = "加载中...") -> void:
+	loadingLabel.text = message
+	loadingOverlay.visible = true
+	enterButton.disabled = true
+
+## 隐藏加载状态
+func _hideLoading() -> void:
+	loadingOverlay.visible = false
+	enterButton.disabled = false
+
+## 显示错误提示
+func _showError(errorCode: int, customMessage: String = "") -> void:
+	var message = customMessage if not customMessage.is_empty() else ErrorCode.getMessage(errorCode)
+	statusLabel.text = message
+	statusLabel.modulate = Color.RED
+
+	# 3秒后自动清除
+	await get_tree().create_timer(3.0).timeout
+	_clearStatus()
+
+## 显示成功提示
+func _showSuccess(message: String) -> void:
+	statusLabel.text = message
+	statusLabel.modulate = Color.GREEN
+
+## 清除状态提示
+func _clearStatus() -> void:
+	statusLabel.text = " "
+	statusLabel.modulate = Color.WHITE

scripts/ui/UI_Login.gd.uid

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+uid://c6f1awwaw1nim

scripts/ui/UI_MainMenu.gd

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+extends Control
+
+## 主菜单界面控制器
+## 显示用户信息并提供退出登录功能
+
+@onready var welcomeLabel: Label = $centerContainer/vboxContainer/welcomeLabel
+@onready var userInfoLabel: Label = $centerContainer/vboxContainer/userInfoLabel
+@onready var logoutButton: Button = $centerContainer/vboxContainer/logoutButton
+
+func _ready():
+	# 连接退出登录按钮
+	logoutButton.pressed.connect(_onLogoutPressed)
+
+	# 连接 AuthManager 信号
+	AuthManager.logout_success.connect(_onLogoutSuccess)
+
+	# 显示用户信息
+	_displayUserInfo()
+
+## 显示用户信息
+func _displayUserInfo() -> void:
+	var currentUser = AuthManager.getCurrentUser()
+
+	if currentUser != null:
+		userInfoLabel.text = "用户名：%s\n等级：%d" % [currentUser.username, currentUser.level]
+	else:
+		userInfoLabel.text = "未登录"
+
+## 退出登录按钮点击事件
+func _onLogoutPressed() -> void:
+	# 调用 AuthManager 登出
+	AuthManager.logout()
+
+## 登出成功回调
+func _onLogoutSuccess() -> void:
+	# 返回登录界面
+	get_tree().change_scene_to_file("res://scenes/login_scene.tscn")

scripts/ui/UI_MainMenu.gd.uid

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+uid://cfpv68lwjwove