refactor(style): 统一项目代码风格，整理导入顺序、间距规范与方法排列

- GUI 模块统一 QtCore → QtGui → QtWidgets 导入排列，各类独占一行按字母排序
- 统一类间两空行、类内方法间一空行、函数间一空行的间距规范
- 统一方法排列顺序：__init__ → setupUi → connectSignals → public → Slot → private
- 统一 _widgets 中 ConditionRowFrame/ActionStepFrame 方法命名（populate* / toScript / updateValueWidget）
- LibTimeSelector 迁入 operators/abs 抽象层

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/managers/config/ConfigManager.py

@@ -33,7 +33,6 @@ class ConfigTemplate:
 
         self.__config_type = config_type
 
-
     def template(
         self
     ) -> dict:
@@ -83,7 +82,6 @@ class ConfigManager:
 
         self.initialize()
 
-
     def initialize(
         self
     ):
@@ -91,7 +89,6 @@ class ConfigManager:
         for config_type in ConfigType:
             self.load(config_type)
 
-
     def load(
         self,
         config_type: ConfigType
@@ -108,7 +105,6 @@ class ConfigManager:
         self.__config_data[config_type.value] = ConfigTemplate(config_type).template()
         JSONWriter(config_path, self.__config_data[config_type.value])
 
-
     def get(
         self,
         key: ConfigPath,
@@ -126,7 +122,6 @@ class ConfigManager:
                     return default
             return config_data.get(keys[-1], default)
 
-
     def set(
         self,
         key: ConfigPath,
@@ -147,7 +142,6 @@ class ConfigManager:
                 config_data[keys[-1]] = value
         self.save(key.config_type)
 
-
     def save(
         self,
         config_type: ConfigType
@@ -156,7 +150,6 @@ class ConfigManager:
         config_path = os.path.join(self.__config_dir, config_type.value)
         JSONWriter(config_path, self.__config_data[config_type.value])
 
-
     def configDir(
         self
     ) -> str:
@@ -169,6 +162,7 @@ _config_manager_instance : ConfigManager | None = None
 
 # Singleton instance of ConfigManager.
 _instance_lock = threading.Lock()
+
 def instance(
     config_dir: str = ""
 ) -> ConfigManager: