feat:增加统计图表模块

lib/layout/app_drawer.dart

@@ -86,28 +86,62 @@ class AppDrawer extends StatelessWidget {
     );
   }
 
+  Widget buildVersionInfo({
+    required BuildContext context,
+    required String fullVersion,
+  }) {
+    return Container(
+      width: double.infinity,
+      padding: EdgeInsets.all(8),
+      decoration: BoxDecoration(
+        border: Border(top: BorderSide(color: Colors.grey.shade300)),
+      ),
+      child: Text(
+        '版本 v$fullVersion',
+        textAlign: TextAlign.center,
+        style: TextStyle(
+          fontSize: 12,
+          color: Theme.of(context).colorScheme.primary,
+        ),
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
     final appProvider = Provider.of<AppProvider>(context);
 
     return Drawer(
-      child: ListView(
-        padding: EdgeInsets.zero,
+      child: Column(
         children: [
-          // 抽屉头部
-          buildDrawerHeader(context),
+          // 主要内容区域，可以滚动
+          Expanded(
+            child: ListView(
+              padding: EdgeInsets.zero,
+              children: [
+                // 抽屉头部
+                buildDrawerHeader(context),
+                _buildThemeSection(context, appProvider),
+                const Divider(),
+                _buildDrawerItem(
+                  context: context,
+                  icon: Icons.help,
+                  title: '帮助与反馈',
+                  onTap: () {
+                    Navigator.pop(context);
+                    // 这里可以导航到帮助页面
+                  },
+                ),
+              ],
+            ),
+          ),
 
-          _buildThemeSection(context, appProvider),
-
-          const Divider(),
-
-          _buildDrawerItem(
-            context: context,
-            icon: Icons.help,
-            title: '帮助与反馈',
-            onTap: () {
-              Navigator.pop(context);
-              // 这里可以导航到帮助页面
+          Consumer<AppProvider>(
+            builder: (context, appProvider, child) {
+              return buildVersionInfo(
+                context: context,
+                fullVersion: appProvider.fullVersion,
+              );
             },
           ),
         ],

lib/layout/main_screen.dart

@@ -1,6 +1,7 @@
 import 'package:flisp_app/layout/app_drawer.dart';
 import 'package:flisp_app/pages/calendar_page.dart';
 import 'package:flisp_app/pages/flisp_page.dart';
+import 'package:flisp_app/pages/stats_page.dart';
 import 'package:flisp_app/pages/todo_page.dart';
 import 'package:flisp_app/provider/app_provider.dart';
 import 'package:flutter/material.dart';
@@ -25,6 +26,7 @@ class _MainScreenState extends State<MainScreen> {
       icon: Icon(Icons.calendar_month_rounded),
       label: '日程',
     ),
+    BottomNavigationBarItem(icon: Icon(Icons.insert_chart), label: '统计'),
   ];
 
   @override
@@ -89,7 +91,9 @@ class _MainScreenState extends State<MainScreen> {
     }
   }
 
-  Widget _buildFloatingButton(BuildContext context, int index) {
+  Widget? _buildFloatingButton(BuildContext context, int index) {
+    if (index == 3) return null;
+
     return FloatingActionButton(
       onPressed: () => _onPressFloatingButton(index),
       backgroundColor: Colors.transparent,
@@ -115,6 +119,8 @@ class _MainScreenState extends State<MainScreen> {
         return TodoPage(key: _todoPageKey);
       case 2:
         return CalendarPage(key: _calendarPageKey);
+      case 3:
+        return StatsPage();
       default:
         return FlispPage(key: _flispPageKey);
     }