feat(dc): Complete Tool C quick action buttons Phase 1-2 - 7 functions

Summary:
- Implement 7 quick action functions (filter, recode, binning, conditional, dropna, compute, pivot)
- Refactor to pre-written Python functions architecture (stable and secure)
- Add 7 Python operations modules with full type hints
- Add 7 frontend Dialog components with user-friendly UI
- Fix NaN serialization issues and auto type conversion
- Update all related documentation

Technical Details:
- Python: operations/ module (filter.py, recode.py, binning.py, conditional.py, dropna.py, compute.py, pivot.py)
- Backend: QuickActionService.ts with 7 execute methods
- Frontend: 7 Dialog components with complete validation
- Toolbar: Enable 7 quick action buttons

Status: Phase 1-2 completed, basic testing passed, ready for further testing

python-microservice/operations/__init__.py

@@ -0,0 +1,16 @@
+"""
+数据操作函数模块
+
+提供预写的、经过测试的数据处理函数，供功能按钮调用。
+
+模块列表：
+- filter: 高级筛选
+- recode: 数值映射（重编码）
+- binning: 生成分类变量（分箱）
+- conditional: 条件生成列
+- missing: 缺失值处理
+- duplicate: 去重
+"""
+
+__version__ = '1.0.0'
+