feat:更新主题色适配

lib/widgets/recipe/list.dart

@@ -31,7 +31,6 @@ class _RecipeListState extends State<RecipeList> {
       decoration: BoxDecoration(
         color: colors.surfaceContainer,
         borderRadius: BorderRadius.circular(12),
-        border: Border.all(color: Colors.grey[200]!),
       ),
       padding: EdgeInsets.symmetric(horizontal: 16),
       child: DropdownButton<String>(
@@ -64,15 +63,28 @@ class _RecipeListState extends State<RecipeList> {
               );
             }).toList(),
         onChanged: (value) {
-          setState(() {
-            provider.queryCategory = value!;
-            provider.refreshRecipeList();
-          });
+          provider.queryCategory = value!;
+          provider.refreshRecipeList();
         },
       ),
     );
   }
 
+  Widget _buildRecipeList(FoodProvider provider) {
+    return GridView.builder(
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 2,
+        crossAxisSpacing: 8,
+        mainAxisSpacing: 8,
+        childAspectRatio: 0.9,
+      ),
+      itemCount: provider.recipeSummaryList.length,
+      itemBuilder: (context, index) {
+        return RecipeCard(recipe: provider.recipeSummaryList[index]);
+      },
+    );
+  }
+
   Widget _buildContent(FoodProvider provider) {
     if (provider.recipeSummaryList.isEmpty) {
       return buildEmptyData();
@@ -81,20 +93,7 @@ class _RecipeListState extends State<RecipeList> {
         children: [
           _buildSelectCategory(provider),
           SizedBox(height: 5),
-          Expanded(
-            child: GridView.builder(
-              gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
-                crossAxisCount: 2, // 每行2个
-                crossAxisSpacing: 8, // 水平间距
-                mainAxisSpacing: 8, // 垂直间距
-                childAspectRatio: 0.9,
-              ),
-              itemCount: provider.recipeSummaryList.length,
-              itemBuilder: (context, index) {
-                return RecipeCard(recipe: provider.recipeSummaryList[index]);
-              },
-            ),
-          ),
+          Expanded(child: _buildRecipeList(provider)),
         ],
       );
     }