feat(ECR-014): MembershipPlan 套餐配置并 Closed

membership_plans 表、admin 套餐页、Grant/CreateOrder 读表；
Loop continuous 自动 Approve/Closed。Next：ECR-015 RedemptionCode。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin-h5/src/api/client.ts

@@ -136,6 +136,28 @@ export const adminApi = {
     request<{ ok: boolean; ask_paid_quota_left: number }>('POST', `/users/${id}/ask-quota/grant`, {
       delta,
     }),
+  membershipPlans: () =>
+    request<{
+      items: Array<{
+        code: string
+        title: string
+        duration_days: number
+        amount_cents: number
+        active: boolean
+        updated_at: string
+      }>
+    }>('GET', '/membership-plans'),
+  updateMembershipPlan: (
+    code: string,
+    body: { title: string; duration_days: number; amount_cents: number; active: boolean },
+  ) =>
+    request<{
+      code: string
+      title: string
+      duration_days: number
+      amount_cents: number
+      active: boolean
+    }>('PUT', `/membership-plans/${code}`, body),
   orders: () =>
     request<{
       items: Array<{