refactor: simplify UI layout using grid instead of pack for admin controls

Restructure the Production ID source controls to use grid layout for
better alignment. Simplify manager filter section by removing
canvas/scrollbar complexity in favor of a straightforward two-column
layout with buttons on the left.

Co-Authored-By: Claude (glm-5) <noreply@anthropic.com>

gui/material_validation_tab.py

@@ -308,7 +308,7 @@ class MaterialValidationTab(ttk.Frame):
             manager_filter_frame = ttk.LabelFrame(
                 main_container,
                 text="筛选（按负责人）",
-                padding=10
+                padding=(10, 10, 10, 10)  # 左、上、右、下 - 底部padding减小
             )
             manager_filter_frame.pack(fill=tk.X, pady=(0, 10))
         else:
@@ -341,7 +341,7 @@ class MaterialValidationTab(ttk.Frame):
 
             self.source_mode = tk.StringVar(value="database_full")
 
-            # 数据库模式
+            # 左侧：数据库模式单选按钮
             ttk.Radiobutton(
                 source_group,
                 text="数据库 - 全表校验",
@@ -356,15 +356,11 @@ class MaterialValidationTab(ttk.Frame):
                 variable=self.source_mode,
                 value="database_filtered",
                 command=self._on_source_mode_change,
-            ).grid(row=0, column=1, sticky="w", padx=5)
-        else:
-            # 普通用户：默认使用 database_filtered 模式
-            self.source_mode = tk.StringVar(value="database_filtered")
+            ).grid(row=1, column=0, sticky="w", padx=5)
 
-        # Production ID 数据源（仅 Admin）
-        if self.session_manager.is_admin():
-            self.source_frame = ttk.Frame(parent)
-            self.source_frame.pack(fill=tk.X, pady=5)
+            # 右侧：Production ID 数据源选择区域
+            self.source_frame = ttk.Frame(source_group)
+            self.source_frame.grid(row=0, column=1, rowspan=2, sticky="nsew", padx=(20, 0))
 
             # Production ID 数据源选择
             self.production_id_source_var = tk.StringVar(value="shared")
@@ -384,24 +380,27 @@ class MaterialValidationTab(ttk.Frame):
                 command=self._on_production_id_source_changed
             ).pack(side=tk.LEFT, padx=10)
 
-            # 文件选择器
+            # 文件选择器（放在 source_group 下方，当选择文件时显示）
             self.db_filtered_production_id_selector = FileSelector(
-                parent,
+                source_group,
                 label_text="",
                 file_type="file",
                 file_types=[("文本文件", "*.txt"), ("所有文件", "*.*")],
                 initial_dir="D:/python/playwrite/",
             )
-            self.db_filtered_production_id_selector.pack(fill=tk.X)
 
             # 共享 Production ID 提示标签
             self.shared_ids_info_label = ttk.Label(
-                parent,
+                source_group,
                 text="",
                 foreground="blue"
             )
             # 初始时不显示
 
+        else:
+            # 普通用户：默认使用 database_filtered 模式
+            self.source_mode = tk.StringVar(value="database_filtered")
+
         # 控制按钮
         button_frame = ttk.Frame(parent)
         button_frame.pack(fill=tk.X, pady=10)
@@ -545,15 +544,15 @@ class MaterialValidationTab(ttk.Frame):
         if mode == "database_full":
             # 全表模式：隐藏所有 Production ID 相关控件
             if hasattr(self, 'source_frame') and self.source_frame:
-                self.source_frame.pack_forget()
+                self.source_frame.grid_forget()
             if hasattr(self, 'db_filtered_production_id_selector'):
-                self.db_filtered_production_id_selector.pack_forget()
+                self.db_filtered_production_id_selector.grid_forget()
             if hasattr(self, 'shared_ids_info_label'):
-                self.shared_ids_info_label.pack_forget()
+                self.shared_ids_info_label.grid_forget()
         elif mode == "database_filtered":
             # 过滤模式：显示数据源选择
             if hasattr(self, 'source_frame') and self.source_frame:
-                self.source_frame.pack(fill=tk.X, pady=5)
+                self.source_frame.grid(row=0, column=1, rowspan=2, sticky="nsew", padx=(20, 0))
             # 根据 Production ID 数据源选择显示对应控件
             self._on_production_id_source_changed()
 
@@ -566,12 +565,12 @@ class MaterialValidationTab(ttk.Frame):
         source = self.production_id_source_var.get()
         if source == "shared":
             # 使用共享 Production ID
-            self.db_filtered_production_id_selector.pack_forget()
-            self.shared_ids_info_label.pack(anchor="w", pady=(0, 5))
+            self.db_filtered_production_id_selector.grid_forget()
+            self.shared_ids_info_label.grid(row=2, column=0, columnspan=2, sticky="w", pady=(5, 0))
         else:
             # 使用文件
-            self.shared_ids_info_label.pack_forget()
-            self.db_filtered_production_id_selector.pack(fill=tk.X)
+            self.shared_ids_info_label.grid_forget()
+            self.db_filtered_production_id_selector.grid(row=2, column=0, columnspan=2, sticky="ew", pady=(5, 0))
 
     def on_production_ids_updated(self, production_ids: list):
         """当数据提取页面的 Production ID 更新时调用"""
@@ -625,38 +624,23 @@ class MaterialValidationTab(ttk.Frame):
             self.filter_canvas = None
             return
 
-        # 创建复选框容器
-        canvas_container = ttk.Frame(parent)
-        canvas_container.pack(fill=tk.BOTH, expand=True)
+        # 主容器：左右两列布局
+        main_container = ttk.Frame(parent)
+        main_container.pack(fill=tk.BOTH, expand=True)
 
-        # Canvas和滚动条
-        self.filter_canvas = tk.Canvas(canvas_container, height=80)
-        scrollbar = ttk.Scrollbar(canvas_container, orient="vertical", command=self.filter_canvas.yview)
-        self.filter_frame = ttk.Frame(self.filter_canvas)
+        # 左侧：按钮区域（竖向排列）
+        button_frame = ttk.Frame(main_container)
+        button_frame.pack(side=tk.LEFT, fill=tk.Y, padx=(0, 10))
 
-        self.filter_frame.bind(
-            "<Configure>",
-            lambda e: self.filter_canvas.configure(scrollregion=self.filter_frame.bbox("all"))
-        )
+        ttk.Button(button_frame, text="全选", command=self._select_all_managers_button).pack(fill=tk.X, pady=2)
+        ttk.Button(button_frame, text="取消全选", command=self._deselect_all_managers_button).pack(fill=tk.X, pady=2)
 
-        self.filter_canvas.create_window((0, 0), window=self.filter_frame, anchor="nw")
-        self.filter_canvas.configure(yscrollcommand=scrollbar.set)
+        # 右侧：负责人复选框区域（简化为直接使用 Frame）
+        self.filter_frame = ttk.Frame(main_container)
+        self.filter_frame.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
 
-        # 布局
-        self.filter_canvas.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
-        scrollbar.pack(side=tk.RIGHT, fill=tk.Y)
-
-        # 鼠标滚轮支持
-        def _on_mousewheel(event):
-            self.filter_canvas.yview_scroll(int(-1*(event.delta/120)), "units")
-        self.filter_canvas.bind("<MouseWheel>", _on_mousewheel)
-
-        # 快捷按钮
-        button_frame = ttk.Frame(parent)
-        button_frame.pack(fill=tk.X, pady=(5, 0))
-
-        ttk.Button(button_frame, text="全选", command=self._select_all_managers_button).pack(side=tk.LEFT, padx=5)
-        ttk.Button(button_frame, text="取消全选", command=self._deselect_all_managers_button).pack(side=tk.LEFT, padx=5)
+        # 保留 filter_canvas 属性设为 None（兼容性考虑）
+        self.filter_canvas = None
 
     def _create_manager_checkboxes(self):
         """创建负责人复选框"""
@@ -692,20 +676,12 @@ class MaterialValidationTab(ttk.Frame):
 
         items_per_column = 6
 
-        # 全选复选框
-        ttk.Checkbutton(
-            self.filter_frame,
-            text="全选",
-            variable=self.select_all_managers_var,
-            command=self._on_select_all_managers_toggle
-        ).grid(row=0, column=0, sticky="w", padx=5, pady=2)
-
         # 负责人复选框
         for idx, manager in enumerate(self.managers):
             var = tk.BooleanVar(value=True)
             self.manager_checkboxes[manager] = var
 
-            row = (idx // items_per_column) + 1
+            row = idx // items_per_column
             col = idx % items_per_column
 
             ttk.Checkbutton(