履约配置页 affiliate-dash 覆盖收尾:preferredMatchEnabled 开关补入平台配置 UI

- 分析结论:履约路由面板已含 affiliate_dash(开关/优先级/规则),职责划分成立
- 缺口修复:指定匹配优先开关此前无 UI 入口,现平台配置 affiliate-dash tab 增加 Switch
- 后端 effective 透出 preferredMatchEnabled;前端类型/panel 补齐
- 前后端 typecheck 通过,224 测试全绿

apps/frontend/src/pages/admin/platform/AdminPlatformShopsPage.tsx

@@ -2300,6 +2300,7 @@ function AffiliateDashPlatformPanel() {
   const [saving, setSaving] = useState(false)
   const [errorMessage, setErrorMessage] = useState('')
   const [enabled, setEnabled] = useState(true)
+  const [preferredMatchEnabled, setPreferredMatchEnabled] = useState(true)
   const [baseUrl, setBaseUrl] = useState('')
   const [appKey, setAppKey] = useState('')
   const [appSecret, setAppSecret] = useState('')
@@ -2346,6 +2347,7 @@ function AffiliateDashPlatformPanel() {
   function hydrateConfig(response: AdminAffiliateDashConfigResponse) {
     const source = response.source
     setEnabled(source.enabled !== false)
+    setPreferredMatchEnabled(source.preferredMatchEnabled !== false)
     setBaseUrl(source.baseUrl || '')
     setAppKey(source.appKey || '')
     setAppSecret(source.appSecret || '')
@@ -2368,6 +2370,7 @@ function AffiliateDashPlatformPanel() {
     try {
       const payload: AdminAffiliateDashConfig = {
         enabled,
+        preferredMatchEnabled,
         baseUrl,
         appKey,
         appSecret,
@@ -2464,6 +2467,8 @@ function AffiliateDashPlatformPanel() {
               <Space>
                 <Typography.Text>启用</Typography.Text>
                 <Switch checked={enabled} onChange={setEnabled} />
+                <Typography.Text type="secondary">映射命中优先</Typography.Text>
+                <Switch checked={preferredMatchEnabled} onChange={setPreferredMatchEnabled} />
               </Space>
               <Space wrap>
                 <span>BASE_URL</span>