refactor: remove Excel data source options from material validation UI

Simplify material validation tab by removing Excel-related data source options and associated logic, keeping only database-driven validation modes.

Changes:
- Remove Excel file and Excel full workflow radio buttons from UI
- Remove Excel file selector components (excel_existing_frame, excel_full_frame)
- Update _on_source_mode_change to handle only database modes
- Simplify start_validation input validation for database modes only
- Update _validation_worker to call only database validation methods

The UI now presents only two data source options:
1. Database - Full table validation
2. Database - ProductionID filtered validation

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

gui/material_validation_tab.py

@@ -4,11 +4,9 @@
 物料校验标签页
 
 校验物料状态并匹配待删除物料。
-支持 4 种校验模式：
+支持 2 种校验模式：
 1. database_full - 数据库全表校验
 2. database_filtered - 数据库 ProductionID 过滤校验
-3. excel_existing - Excel 现有文件校验
-4. excel_full - Excel 完整工作流
 """
 
 import os
@@ -97,23 +95,6 @@ class MaterialValidationTab(ttk.Frame):
             command=self._on_source_mode_change,
         ).grid(row=0, column=1, sticky="w", padx=5)
 
-        # Excel 模式
-        ttk.Radiobutton(
-            source_group,
-            text="Excel - 现有文件",
-            variable=self.source_mode,
-            value="excel_existing",
-            command=self._on_source_mode_change,
-        ).grid(row=1, column=0, sticky="w", padx=5)
-
-        ttk.Radiobutton(
-            source_group,
-            text="Excel - 完整工作流",
-            variable=self.source_mode,
-            value="excel_full",
-            command=self._on_source_mode_change,
-        ).grid(row=1, column=1, sticky="w", padx=5)
-
         # 文件选择
         file_group = ttk.LabelFrame(parent, text="文件选择", padding=10)
         file_group.pack(fill=tk.X, pady=5)
@@ -137,28 +118,6 @@ class MaterialValidationTab(ttk.Frame):
         )
         self.db_filtered_production_id_selector.pack(fill=tk.X)
 
-        # Excel 现有文件模式
-        self.excel_existing_frame = ttk.Frame(file_group)
-        self.excel_existing_selector = FileSelector(
-            self.excel_existing_frame,
-            label_text="现有 Excel 文件:",
-            file_type="file",
-            file_types=[("Excel 文件", "*.xlsx"), ("所有文件", "*.*")],
-            initial_dir=self.config.get("paths.data_dir", "data/"),
-        )
-        self.excel_existing_selector.pack(fill=tk.X)
-
-        # Excel 完整工作流模式
-        self.excel_full_frame = ttk.Frame(file_group)
-        self.excel_full_production_id_selector = FileSelector(
-            self.excel_full_frame,
-            label_text="ProductionID 文件:",
-            file_type="file",
-            file_types=[("文本文件", "*.txt"), ("所有文件", "*.*")],
-            initial_dir="D:/python/playwrite/",
-        )
-        self.excel_full_production_id_selector.pack(fill=tk.X)
-
         # 输出文件
         output_frame = ttk.Frame(file_group)
         output_frame.grid(row=1, column=0, columnspan=2, sticky="ew", pady=(10, 0))
@@ -243,18 +202,12 @@ class MaterialValidationTab(ttk.Frame):
         # 隐藏所有文件选择框架
         self.db_full_frame.grid_remove()
         self.db_filtered_frame.grid_remove()
-        self.excel_existing_frame.grid_remove()
-        self.excel_full_frame.grid_remove()
 
         # 根据模式显示对应的文件选择器
         if mode == "database_full":
             self.db_full_frame.grid(row=0, column=0, columnspan=2, sticky="ew")
         elif mode == "database_filtered":
             self.db_filtered_frame.grid(row=0, column=0, columnspan=2, sticky="ew")
-        elif mode == "excel_existing":
-            self.excel_existing_frame.grid(row=0, column=0, columnspan=2, sticky="ew")
-        elif mode == "excel_full":
-            self.excel_full_frame.grid(row=0, column=0, columnspan=2, sticky="ew")
 
     def start_validation(self):
         """开始校验"""
@@ -280,21 +233,8 @@ class MaterialValidationTab(ttk.Frame):
             if not os.path.exists(production_id_file):
                 messagebox.showerror("错误", f"文件不存在：{production_id_file}")
                 return
-        elif mode == "excel_existing":
-            input_file = self.excel_existing_selector.get()
-            if not input_file:
-                messagebox.showerror("错误", "请选择现有 Excel 文件")
-                return
-            if not os.path.exists(input_file):
-                messagebox.showerror("错误", f"文件不存在：{input_file}")
-                return
-        elif mode == "excel_full":
-            production_id_file = self.excel_full_production_id_selector.get()
-            if not production_id_file:
-                messagebox.showerror("错误", "请选择 ProductionID 文件")
-                return
-            if not os.path.exists(production_id_file):
-                messagebox.showerror("错误", f"文件不存在：{production_id_file}")
+        else:
+            messagebox.showerror("错误", f"未知的校验模式: {mode}")
             return
 
         # 确保输出目录存在
@@ -352,17 +292,6 @@ class MaterialValidationTab(ttk.Frame):
                         full_table=False,
                         output_file=output_file
                     )
-                elif mode == "excel_existing":
-                    result = validator.validate_from_existing_excel(
-                        excel_file=input_file,
-                        output_file=output_file
-                    )
-                elif mode == "excel_full":
-                    result = validator.validate(
-                        production_id_file=production_id_file,
-                        merged_excel_file=None,
-                        output_file=output_file,
-                    )
                 else:
                     raise ValueError(f"未知的校验模式: {mode}")