feat: 物品规则支持按数量计价（二次匹配SKU文字数量）

- 规则新增单价（unit_price_fen，0 关闭），开启后接单总价 = 单价 × 商品名称文字中的规格数量
- 新增 resolveSkuNameQuantity：支持阿拉伯数字与中文数字（如 指挥官秘钥15个 → 15、三个 → 3）
- 建单同步时按文字数量计算奖励，skuQuantity 记入工单 material.source 便于核对
- 规则表单新增计价方式（固定金额/按数量×单价），列表展示单价
- 新增 3 个数量解析单元测试（269 全通过）

apps/frontend/src/pages/admin/panels/ProductRulesPanel.tsx

@@ -22,6 +22,7 @@ import {
   InputNumber,
   Modal,
   Popconfirm,
+  Radio,
   Select,
   Space,
   Statistic,
@@ -114,6 +115,8 @@ export default function ProductRulesPanel() {
     rewardAmount?: number
     requiredDepositAmount?: number
     depositThresholdAmount?: number
+    pricingMode?: string
+    unitPrice?: number
     sharingEnabled?: boolean
     sharingTotalQuantity?: number
     sharingUnitReward?: number
@@ -123,11 +126,15 @@ export default function ProductRulesPanel() {
     fieldsText?: string
     enabled?: boolean
     autoCreate?: boolean
+    sortOrder?: number
   }) {
     try {
+      const unitMode = values.pricingMode === 'unit'
+      const { pricingMode: _pricingMode, ...payload } = values
       await saveAdminWorkProductRule({
-        ...values,
+        ...payload,
         ruleId: editingRule?.ruleId,
+        unitPrice: unitMode ? Number(values.unitPrice || 0) : 0,
       })
       message.success(editingRule ? '物品规则已更新' : '物品规则已创建')
       resetRuleForm()
@@ -160,7 +167,9 @@ export default function ProductRulesPanel() {
       productName: rule.productName,
       matchType: rule.matchType,
       categoryId: rule.categoryId || undefined,
+      pricingMode: rule.unitPriceFen > 0 ? 'unit' : 'fixed',
       rewardAmount: rule.rewardAmount / 100,
+      unitPrice: rule.unitPriceFen / 100,
       requiredDepositAmount: rule.requiredDepositAmount / 100,
       depositThresholdAmount: rule.depositThresholdAmount / 100,
       sharingEnabled: rule.sharing?.enabled || false,
@@ -250,8 +259,17 @@ export default function ProductRulesPanel() {
     { title: '分类', width: 140, render: (_, row) => row.categoryName || '-' },
     {
       title: '接单金额',
-      width: 120,
-      render: (_, row) => formatMoney(row.rewardAmount),
+      width: 150,
+      render: (_, row) => (
+        <div className="cell-stack">
+          <span>{formatMoney(row.rewardAmount)}</span>
+          {row.unitPriceFen > 0 ? (
+            <Typography.Text type="secondary" style={{ fontSize: 12 }}>
+              按数量计价：{formatMoney(row.unitPriceFen)} × 数量
+            </Typography.Text>
+          ) : null}
+        </div>
+      ),
     },
     {
       title: '押金',
@@ -333,6 +351,7 @@ export default function ProductRulesPanel() {
           initialValues={{
             platform: 'kuaishou',
             matchType: 'contains',
+            pricingMode: 'fixed',
             rewardAmount: 25,
             depositThresholdAmount: 200,
             enabled: true,
@@ -405,14 +424,47 @@ export default function ProductRulesPanel() {
                 )}
               />
             </Form.Item>
-            <Form.Item label="接单金额" name="rewardAmount">
-              <InputNumber
-                min={0.01}
-                step={1}
-                addonAfter="元"
+            <Form.Item
+              label="计价方式"
+              name="pricingMode"
+              tooltip="按数量计价时，接单总价 = 单价 × 商品名称文字中的规格数量（如「指挥官秘钥15个」→ 15）"
+            >
+              <Radio.Group
                 className="full-width"
+                options={[
+                  { value: 'fixed', label: '固定金额' },
+                  { value: 'unit', label: '按数量 × 单价' },
+                ]}
               />
             </Form.Item>
+            <Form.Item noStyle shouldUpdate>
+              {({ getFieldValue }) =>
+                getFieldValue('pricingMode') === 'unit' ? (
+                  <Form.Item
+                    label="单价"
+                    name="unitPrice"
+                    rules={[{ required: true, message: '请填写单价' }]}
+                    extra="接单总价 = 单价 × 商品名称文字中的数量"
+                  >
+                    <InputNumber
+                      min={0.01}
+                      step={1}
+                      addonAfter="元"
+                      className="full-width"
+                    />
+                  </Form.Item>
+                ) : (
+                  <Form.Item label="接单金额" name="rewardAmount">
+                    <InputNumber
+                      min={0.01}
+                      step={1}
+                      addonAfter="元"
+                      className="full-width"
+                    />
+                  </Form.Item>
+                )
+              }
+            </Form.Item>
             <Form.Item label="押金阈值" name="depositThresholdAmount">
               <InputNumber
                 min={0}

apps/frontend/src/services/admin/worker-platform.ts

@@ -99,6 +99,7 @@ export function saveAdminWorkProductRule(payload: {
   enabled?: boolean
   autoCreate?: boolean
   rewardAmount?: number
+  unitPrice?: number
   requiredDepositAmount?: number
   depositThresholdAmount?: number
   sharingEnabled?: boolean

apps/frontend/src/types/worker-platform.ts

@@ -147,6 +147,7 @@ export type WorkProductRule = {
   enabled: boolean
   autoCreate: boolean
   rewardAmount: number
+  unitPriceFen: number
   requiredDepositAmount: number
   depositThresholdAmount: number
   sharing?: WorkOrderSharingConfig