首页和个人中心优化：去掉通知/查询按钮，个人图标改客服，移除未开发菜单项

flutter_monisuo/lib/ui/pages/home/header_bar.dart

@@ -1,10 +1,7 @@
 import 'package:flutter/material.dart';
-import 'package:provider/provider.dart';
 import 'package:lucide_icons_flutter/lucide_icons.dart';
 import '../../../core/theme/app_theme.dart';
-import '../../../core/theme/app_color_scheme.dart';
 import '../../../core/theme/app_spacing.dart';
-import '../../../providers/auth_provider.dart';
 
 /// 首頁頂欄 - Logo + 搜索/通知/頭像
 class HeaderBar extends StatelessWidget {
@@ -30,42 +27,12 @@ class HeaderBar extends StatelessWidget {
             ),
           ),
           const Spacer(),
-          // Search button
+          // Customer service button
           _IconButton(
-            icon: LucideIcons.search,
+            icon: LucideIcons.headset,
             colorScheme: colorScheme,
             onTap: () {},
           ),
-          const SizedBox(width: AppSpacing.sm),
-          // Bell button
-          _IconButton(
-            icon: LucideIcons.bell,
-            colorScheme: colorScheme,
-            onTap: () {},
-          ),
-          const SizedBox(width: AppSpacing.sm),
-          // Avatar
-          Consumer<AuthProvider>(
-            builder: (context, auth, _) {
-              final username = auth.user?.username ?? '';
-              final initial = username.isNotEmpty ? username[0].toUpperCase() : '?';
-              return Container(
-                width: 32,
-                height: 32,
-                decoration: BoxDecoration(
-                  color: colorScheme.primary,
-                  shape: BoxShape.circle,
-                ),
-                alignment: Alignment.center,
-                child: Text(
-                  initial,
-                  style: AppTextStyles.headlineMedium(context).copyWith(
-                    color: AppColorScheme.darkOnPrimary,
-                  ),
-                ),
-              );
-            },
-          ),
         ],
       ),
     );