feat: add profit analysis page with monthly calendar view

Introduce a new profit analysis page featuring a monthly calendar view that displays daily profit/loss data. The page includes navigation controls to switch between months, loading states, and responsive design that adapts to both light and dark themes. Implements data fetching from asset service and visual indicators for profit trends.

flutter_monisuo/lib/ui/pages/mine/components/logout_button.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:google_fonts/google_fonts.dart';
 import '../../../../core/theme/app_color_scheme.dart';
 import '../../../../core/theme/app_spacing.dart';
 import '../../../../core/theme/app_theme.dart';
@@ -26,9 +25,7 @@ class LogoutButton extends StatelessWidget {
         child: Center(
           child: Text(
             '退出登录',
-            style: GoogleFonts.inter(
-              fontSize: 14,
-              fontWeight: FontWeight.w600,
+            style: AppTextStyles.headlineMedium(context).copyWith(
               color: AppColorScheme.down,
             ),
           ),