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/log/LogManager.py

@@ -89,7 +89,6 @@ class LogManager:
 
         self.initialize()
 
-
     def initialize(
         self
     ):
@@ -139,7 +138,6 @@ class LogManager:
 
         self.__initialized = True
 
-
     def getLogger(
         self,
         name: Optional[str] = None
@@ -149,7 +147,6 @@ class LogManager:
             return self.__logger.getChild(name)
         return self.__logger
 
-
     def setLevel(
         self,
         level: int
@@ -158,7 +155,6 @@ class LogManager:
         if self.__logger:
             self.__logger.setLevel(level)
 
-
     def logDir(
         self
     ) -> str:
@@ -171,6 +167,7 @@ _log_manager_instance = None
 
 # Singleton instance lock.
 _instance_lock = threading.Lock()
+
 def instance(
     log_dir: str = ""
 ) -> LogManager: