feat(gui): 引入全局设置窗口 ALSettingsWidget

- 新增 ALSettingsWidget，左侧导航+右侧内容的设置面板
- 合并外观主题、界面风格、自定义QSS为单页布局
- 深浅色主题通过 Qt.ColorScheme 官方 API 实现
- 界面风格变更检测基于当前运行的 QStyle 比对
- 使用 qtawesome 提供矢量导航图标
- 风格变更时弹出重启确认对话框
- ALAutoScriptEditDialog 中重置/复制按钮改用 qtawesome 图标
- 外观初始化迁移至 boot.AppInitializer
- 菜单栏新增工具→全局设置入口
- GLOBAL 配置扩展 appearance 段（theme/style/custom_qss）

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/gui/ALMainWindow.py

@@ -33,6 +33,7 @@ from PySide6.QtWidgets import (
 from base.MsgBase import MsgBase
 from gui.ALAboutDialog import ALAboutDialog
 from gui.ALConfigWidget import ALConfigWidget
+from gui.ALSettingsWidget import ALSettingsWidget
 from gui.ALMainWorkers import (
     AutoLibWorker,
     TimerTaskWorker
@@ -60,6 +61,7 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.__config_paths = ConfigUtils.getAutomationConfigPaths()
         self.__alTimerTaskManageWidget = None
         self.__alConfigWidget = None
+        self.__alSettingsWidget = None
         self.__auto_lib_thread = None
         self.__current_timer_task_thread = None
         self.__is_running_timer_task = False
@@ -81,6 +83,7 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.MessageIOTextEdit.setFont(QFont("Courier New", 10))
         self.ManualAction.triggered.connect(self.onManualActionTriggered)
         self.AboutAction.triggered.connect(self.onAboutActionTriggered)
+        self.SettingsAction.triggered.connect(self.onSettingsActionTriggered)
 
         # initialize timer task widget, but not show it
         try:
@@ -125,7 +128,6 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
             return
         self.TrayIcon = QSystemTrayIcon(self.Icon, self)
         self.TrayIcon.setToolTip("AutoLibrary")
-
         self.TrayMenu = QMenu()
         self.TrayMenu.addAction("显示主窗口", self.showNormal)
         self.TrayMenu.addAction("显示定时窗口", self.onTimerTaskManageWidgetButtonClicked)
@@ -190,6 +192,9 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         if self.__alConfigWidget:
             self.__alConfigWidget.close()
             # the config widget is already deleted in the 'self.onConfigWidgetClosed'
+        if self.__alSettingsWidget:
+            self.__alSettingsWidget.close()
+            # the settings widget is already deleted in the 'self.onSettingsWidgetClosed'
         self._showLog("主窗口关闭")
         QMainWindow.closeEvent(self, event)
 
@@ -302,6 +307,31 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.setControlButtons(True, None, None)
         self._showLog("配置窗口已关闭,配置文件路径已更新")
 
+    @Slot()
+    def onSettingsWidgetClosed(
+        self
+    ):
+
+        if self.__alSettingsWidget:
+            self.__alSettingsWidget.settingsWidgetIsClosed.disconnect(self.onSettingsWidgetClosed)
+            self.__alSettingsWidget.deleteLater()
+            self.__alSettingsWidget = None
+        self.SettingsAction.setEnabled(True)
+
+    @Slot()
+    def onSettingsActionTriggered(
+        self
+    ):
+
+        if self.__alSettingsWidget is None:
+            self.__alSettingsWidget = ALSettingsWidget(self)
+            self.__alSettingsWidget.settingsWidgetIsClosed.connect(self.onSettingsWidgetClosed)
+        self.__alSettingsWidget.show()
+        self.__alSettingsWidget.raise_()
+        self.__alSettingsWidget.activateWindow()
+        self.SettingsAction.setEnabled(False)
+        self._showLog("打开全局设置窗口")
+
     @Slot(dict)
     def onTimerTaskIsReady(
         self,