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>

services/deletion_checker.py

@@ -0,0 +1,45 @@
+"""
+删除判断服务实现
+基于数据库查询判断物料是否需要删除
+"""
+
+from interfaces.i_deletion_checker import IDeletionChecker
+from models.material_info import MaterialInfo
+from db.materials_to_delete import should_delete_material
+
+
+class DatabaseDeletionChecker(IDeletionChecker):
+    """基于数据库的删除判断实现"""
+
+    def __init__(self, manager_name: str, verbose: bool = True):
+        """
+        初始化删除检查器
+
+        Args:
+            manager_name: 负责人姓名
+            verbose: 是否打印详细日志
+        """
+        self.manager_name = manager_name
+        self.verbose = verbose
+
+    def _print(self, *args, **kwargs):
+        """打印日志（如果 verbose=True）"""
+        if self.verbose:
+            print(*args, **kwargs)
+
+    def should_delete(self, material: MaterialInfo) -> bool:
+        """
+        通过查询数据库判断是否需要删除
+
+        Args:
+            material: 物料信息对象
+
+        Returns:
+            是否需要删除
+        """
+        result = should_delete_material(self.manager_name, material.code)
+        if self.verbose and result:
+            self._print(f">>> 需要清理：{material.name}【{material.code}】")
+        elif self.verbose and not result:
+            self._print(f"保留：{material.name}【{material.code}】无需清理")
+        return result