feat: 添加存款分类设置功能，优化预算管理界面

Web/src/views/BudgetView.vue

@@ -2,7 +2,18 @@
   <div class="page-container-flex">
     <van-nav-bar title="预算管理" placeholder>
       <template #right>
-        <van-icon name="plus" size="20" @click="budgetEditRef.open({ category: activeTab })" />
+        <van-icon
+          v-if="activeTab !== BudgetCategory.Savings"
+          name="plus" 
+          size="20" 
+          @click="budgetEditRef.open({ category: activeTab })" 
+        />
+        <van-icon
+          v-else
+          name="info-o" 
+          size="20" 
+          @click="savingsConfigRef.open()"
+        />
       </template>
     </van-nav-bar>
 
@@ -123,12 +134,15 @@
                   status-tag-text="积累中"
                   @toggle-stop="handleToggleStop"
                   @switch-period="(dir) => handleSwitchPeriod(budget, dir)"
-                  @click="budgetEditRef.open({
-                    data: budget,
-                    isEditFlag: true,
-                    category: budget.category
-                  })"
                 >
+                  <template #tag>
+                    <!-- 占位，避免显示停止/恢复按钮 -->
+                    <span />
+                  </template>
+                  <template #actions>
+                    <!-- 占位，避免显示停止/恢复按钮 -->
+                    <span />
+                  </template>
                   <template #amount-info>
                     <div class="info-item">
                       <div class="label">已存</div>
@@ -164,6 +178,10 @@
       ref="budgetEditRef"
       @success="fetchBudgetList" 
     />
+    <SavingsConfigPopup
+      ref="savingsConfigRef"
+      @success="fetchBudgetList"
+    />
     </div>
   </div>
 </template>
@@ -176,9 +194,11 @@ import { BudgetPeriodType, BudgetCategory } from '@/constants/enums'
 import BudgetCard from '@/components/Budget/BudgetCard.vue'
 import BudgetSummary from '@/components/Budget/BudgetSummary.vue'
 import BudgetEditPopup from '@/components/Budget/BudgetEditPopup.vue'
+import SavingsConfigPopup from '@/components/Budget/SavingsConfigPopup.vue'
 
 const activeTab = ref(BudgetCategory.Expense)
 const budgetEditRef = ref(null)
+const savingsConfigRef = ref(null)
 
 const expenseBudgets = ref([])
 const incomeBudgets = ref([])