refactor: restructure main_clean.py with dependency injection and interfaces

Refactor discrete material cleaner to improve maintainability and testability:

- Introduce dependency injection pattern for service components
- Add interfaces (IPageNavigator, IMaterialExtractor, IDeletionChecker)
- Extract PageNavigator service for page navigation logic
- Extract MaterialExtractor service for data extraction
- Extract DatabaseDeletionChecker service for deletion logic
- Add MaterialInfo data model for structured data
- Centralize configuration (CleanerConfig, UIConstants)
- Implement separation of concerns across services layer

Also includes comprehensive execution mechanism documentation.

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

interfaces/i_deletion_checker.py

@@ -0,0 +1,24 @@
+"""
+删除判断接口
+定义判断物料是否需要删除的抽象接口
+"""
+
+from abc import ABC, abstractmethod
+from models.material_info import MaterialInfo
+
+
+class IDeletionChecker(ABC):
+    """删除判断接口"""
+
+    @abstractmethod
+    def should_delete(self, material: MaterialInfo) -> bool:
+        """
+        判断物料是否需要删除
+
+        Args:
+            material: 物料信息对象
+
+        Returns:
+            是否需要删除
+        """
+        pass