feat(adminfinance): 退款数量拆分为全额退款与部分退款

- 按退款金额与原支付金额比较判定全额/部分退款
- 看板总退款卡片与每日表格增加全额/部分退款展示
- 保留 successful_refund_count 作为两者合计

frontend/src/features/admin/api/adminFinance.ts

@@ -17,6 +17,8 @@ export interface FinanceSummary {
   estimated_income_amount_cent: number
   successful_pay_count: number
   successful_refund_count: number
+  full_refund_count: number
+  partial_refund_count: number
   pending_refund_count: number
   settled_order_count: number
   pending_settle_order_count: number
@@ -36,6 +38,8 @@ export interface FinanceDailyItem {
   estimated_income_amount_cent: number
   successful_pay_count: number
   successful_refund_count: number
+  full_refund_count: number
+  partial_refund_count: number
   pending_refund_count: number
   settled_order_count: number
 }

frontend/src/features/admin/views/AdminFinanceDashboardView.vue

@@ -93,7 +93,10 @@ function rowDiffClass(row: FinanceDailyItem) {
       <div class="metric-card">
         <span>总退款</span>
         <strong>{{ moneyCent(dashboard.summary.total_refund_amount_cent) }}</strong>
-        <small>{{ dashboard.summary.successful_refund_count }} 笔成功退款</small>
+        <small
+          >{{ dashboard.summary.full_refund_count }} 笔全额 /
+          {{ dashboard.summary.partial_refund_count }} 笔部分</small
+        >
       </div>
       <div class="metric-card">
         <span>渠道净流入</span>
@@ -167,8 +170,11 @@ function rowDiffClass(row: FinanceDailyItem) {
       <el-table-column label="销售数量" width="110">
         <template #default="{ row }">{{ row.successful_pay_count }}</template>
       </el-table-column>
-      <el-table-column label="退款数量" width="110">
-        <template #default="{ row }">{{ row.successful_refund_count }}</template>
+      <el-table-column label="全额退款" width="100">
+        <template #default="{ row }">{{ row.full_refund_count }}</template>
+      </el-table-column>
+      <el-table-column label="部分退款" width="100">
+        <template #default="{ row }">{{ row.partial_refund_count }}</template>
       </el-table-column>
       <el-table-column label="结算数量" width="110">
         <template #default="{ row }">{{ row.settled_order_count }}</template>