refactor(client): widgets 颜色迁移到 context.tokens

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/lib/widgets/data_table_card.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import '../core/responsive/responsive.dart';
-import '../core/theme/app_theme.dart';
+import '../core/theme/context_tokens.dart';
 
 class DataTableCard extends StatefulWidget {
   final List<DataColumn> columns;
@@ -53,7 +53,7 @@ class _DataTableCardState extends State<DataTableCard> {
       children: [
         if (widget.toolbar != null)
           Container(
-            color: AppTheme.surface,
+            color: context.tokens.surface,
             padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
             child: widget.toolbar!,
           ),
@@ -67,14 +67,14 @@ class _DataTableCardState extends State<DataTableCard> {
         if (widget.totalCount != null)
           Container(
             height: 48,
-            color: AppTheme.surface,
+            color: context.tokens.surface,
             padding: const EdgeInsets.symmetric(horizontal: 16),
             child: Row(
               children: [
                 Text(
                   '共 ${widget.totalCount} 条记录',
-                  style: const TextStyle(
-                      fontSize: 13, color: AppTheme.textSecondary),
+                  style: TextStyle(
+                      fontSize: 13, color: context.tokens.muted),
                 ),
                 const Spacer(),
                 _PaginationBar(
@@ -132,11 +132,11 @@ class _DataTableCardState extends State<DataTableCard> {
   Widget _buildMobileList() {
     final cards = widget.mobileCards!;
     if (cards.isEmpty) {
-      return const Center(
+      return Center(
         child: Padding(
-          padding: EdgeInsets.all(32),
+          padding: const EdgeInsets.all(32),
           child: Text('暂无数据',
-              style: TextStyle(color: AppTheme.textSecondary, fontSize: 14)),
+              style: TextStyle(color: context.tokens.muted, fontSize: 14)),
         ),
       );
     }
@@ -155,10 +155,10 @@ class _DataTableCardState extends State<DataTableCard> {
         return Padding(
           padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
           child: DefaultTextStyle(
-            style: const TextStyle(
+            style: TextStyle(
               fontSize: 13,
               fontWeight: FontWeight.w600,
-              color: AppTheme.primaryDark,
+              color: context.tokens.primaryDark,
             ),
             child: col.numeric
                 ? Align(alignment: Alignment.centerRight, child: col.label)
@@ -189,8 +189,8 @@ class _DataTableCardState extends State<DataTableCard> {
               padding:
                   const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
               child: DefaultTextStyle(
-                style: const TextStyle(
-                    fontSize: 13, color: AppTheme.textPrimary),
+                style: TextStyle(
+                    fontSize: 13, color: context.tokens.text),
                 child: cell.child,
               ),
             ),
@@ -227,13 +227,13 @@ class _PaginationBar extends StatelessWidget {
       children: [
         // 每页条数选择器
         if (onPageSizeChanged != null) ...[
-          const Text('每页', style: TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
+          Text('每页', style: TextStyle(fontSize: 13, color: context.tokens.muted)),
           const SizedBox(width: 4),
           DropdownButtonHideUnderline(
             child: DropdownButton<int>(
               value: effectiveSize,
               isDense: true,
-              style: const TextStyle(fontSize: 13, color: AppTheme.textPrimary),
+              style: TextStyle(fontSize: 13, color: context.tokens.text),
               items: _pageSizeOptions
                   .map((n) => DropdownMenuItem(value: n, child: Text('$n 条')))
                   .toList(),