docs(theme): update documentation and clean up deprecated color scheme definitions

Removed outdated compatibility aliases and deprecated methods from AppColorScheme,
and updated CLAUDE.md to reflect new theme system requirements with centralized
color management and no hard-coded values in UI components.

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

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
-import 'package:google_fonts/google_fonts.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
+import '../../../core/theme/app_theme.dart';
 import '../../../core/theme/app_spacing.dart';
 
 /// 首页快捷操作栏 - 充值/提现/划转/盈亏/账单
@@ -25,7 +25,7 @@ class QuickActionsRow extends StatelessWidget {
     final colorScheme = Theme.of(context).colorScheme;
 
     return Container(
-      padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 8),
+      padding: const EdgeInsets.symmetric(vertical: AppSpacing.md, horizontal: AppSpacing.sm),
       decoration: BoxDecoration(
         color: colorScheme.surfaceContainer,
         border: Border.all(
@@ -99,7 +99,7 @@ class _ActionItem extends StatelessWidget {
             height: 40,
             decoration: BoxDecoration(
               color: colorScheme.surfaceContainerHigh,
-              borderRadius: BorderRadius.circular(10),
+              borderRadius: BorderRadius.circular(AppRadius.md),
             ),
             alignment: Alignment.center,
             child: Icon(
@@ -108,14 +108,10 @@ class _ActionItem extends StatelessWidget {
               color: colorScheme.onSurfaceVariant,
             ),
           ),
-          const SizedBox(height: 6),
+          const SizedBox(height: AppSpacing.xs + 2),
           Text(
             label,
-            style: GoogleFonts.inter(
-              fontSize: 11,
-              fontWeight: FontWeight.w500,
-              color: colorScheme.onSurfaceVariant,
-            ),
+            style: AppTextStyles.labelMedium(context),
           ),
         ],
       ),